关于android屏幕适配的问题（drawable-xxxxxxxx，dp，sp，px等等），偶尔看到了android源代码，关于dpi的区分的值
Posted gavanwanggw
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篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了关于android屏幕适配的问题（drawable-xxxxxxxx，dp，sp，px等等），偶尔看到了android源代码，关于dpi的区分的值相关的知识，希望对你有一定的参考价值。
上一篇博客说了一下.9.png图片http://blog.csdn.net/qq_23195583/article/details/46737419
当然，点九的是指的能够进行拉伸的。那么假设图片不能拉伸呢，那么要怎么去处理这些问题呢，能够研究一下其它的app是怎么处理的，博主下载了几个应用的apk，然后看了一下里面的分类，以及图片的设置
这个是百思不得姐的，側面看出这个应用的api使用的版本号比較高
这个是糗事百科，和百思不得姐的处理思路一样
再来看其它的
预计捧腹笑话用的人少，更新的也不是非常频繁，并且他们都是用的eclipse开发的，好，那么他们里面的drawable-xxxx里面都是放的什么图片，大家能够下载下载自己研究下，还有就是xml都是加密的。里面写的什么看不到。可是能够依据不同xxx里面的图片的放置来推理xml他们是怎么写的，好的。先拿一个来开刀，来反向推理一下他们的清单文件中面有没有加一个最重要的权限
<supports-screens android:largeScreens="true" android:normalScreens="true" android:smallScreens="true" android:anyDensity="true"/>就是清单文件中面的这个，几个应用的源文件我对照了一下，事实上按道理说点九的文件能够自己拉伸无须要自己去在每一个xxxx里面都布置对应的图片，那么假设每一个里面都有点九，就说明他的清单文件中面加了上面的权限。而其它的三个都没有，还有就是捧腹笑话感觉没有非常好的处理这方面的问题，由于里面的经常使用图片没有进行尺寸分离，基本上都放在了h里面了，获取他们用的图片不多吧，可是其它的三个都在不同的xxx里面放了不同的图片资源，那么他们都是代表什么呢
好，来说他们都代表的什么
drawable
这个文件夹下一般都是来放置点击的xml文件，不知道有没有其它人在其放图片没有，可是博主真的一次没有，这个不用再细说了
原来貌似是依照多少英寸走。可是如今手机屏幕小分辨率不小，原来博主基本山都放在了hdpi里面，可是这样不行。假设是平板的话有可能会失真。可是假设每一个里面都放一套资源的话apk的包会非常大，可是研究的上面几个应用都是这么处理的。那么假设不是对这些须要精细处理。可是前提是保证其不变形不失真，好比android里面的异步处理。假设想要精确处理自己就须要线程和handler假设不是精细的话能够採用async。android自带的异步处理，再有就是事实上为的就是不要apk特别大就不能去定义一个大尺寸的图片来用，如今须要解决的问题就是图片不能大可是不能失真，那么问题该怎么处理？！
drawable-ldpi
这个指的是低分辨率的屏幕
是低分辨率要用的图片
drawable-mdpi
中分辨率
drawable-hdpi
高分辨率
drawable-xhdpi
drawable-xxdpi
这两个通常是平板高分辨率用的
假设是程序的底部菜单的话最好都是用正方型的，并且布局设置的时候也要是一比一，还有就是不同的xxx文件放置不同分辨率的图片是最好的解决方法，假设不是要求非常严格的话就是制作高分辨率的图片。然后用软件压缩大小。这种话不仅保证图片不失真。不变形，并且图片大小不变。不会导致内存溢出，只是感觉这样不好，由于android手机的屏幕高和宽的比例是不固定的。还是能做成点九做点九，能正方形正方形，不行的话对应的文件放置对应的文件夹，android 3.0之后的版本号会依据手机的尺寸去对应的文件夹下查找文件，感觉这是比較好的解决方法，如今是手机，平板的话以后研究
--------------------------------------------分界线----------------------------------------------分界线----------------------------------------------------
開始说说我项目里是怎么定下来的，博主FQ阅读了谷歌的官方文档。感觉谷歌真的好厉害，比苹果那帮厉害多了，别问我眼里总含泪水。由于我爱Android爱的深沉
标准的是160 dp和px是一比一
那么Android那么多手机，UI设计总得选择一个作參考吧。好，如今主流的是1280*720至于手机搭载多大的屏幕暂且不考虑，下文会说
那么在此分辨率下该怎么做呢，假设你也去阅读谷歌的话，你就明确了http://developer.android.com/须要FQ，博主东西在公司电脑上，这是在家里写的，就先不贴谷歌的说明了，回公司补上
他给出的说明大致是这种
480的情况下是*1.5
720的情况下是*2
博主就记住了这俩，由于用的是720
依照这样的规则，UI布局给的假设是300px的话那么在720的情况下就应该是150dp
那么假设是不规则屏幕呢，比方典型的魅族，这种话就须要使用到内外编剧和相对，线性布局去攻克了，至于怎么写须要大家依据实际情况。简单理解就是你定义的依照你定义的比例进行拉伸。可是你不定义的也就是内外布局是会拉伸的。并且这是纯色，是不会影响你定义的东西的，好这种话按道理都行得通。那么实际情况下怎么样呢，博主用公司全部人Android手机进行了測试。确实是这种，我相信大家開始问了。字体sp怎么解决呢。两种情况。一种是依照dp走，可是博主不喜欢，感觉谷歌建议用sp肯定有他的道理。果然假设dp依照相应字号的像素走确实不一样，那么考验程序猿的时候了，须要自己去依据字号调整。找到相应的sp，这个须要大家去摸索了。
到此布局理论都行的通了，那么另外一个问题，图片资源该怎么放，
480放在h，720再往上加，与此同一时候。图片须要要对应的尺寸，这里多一句嘴，假设假设图片用ai处理的话图片资源会变小，并且显示效果会更好，至于怎么处理建议Android技术，UI或者UE还有你们经理一起探讨，不要单方面做主，再就是UI界面设计，技术能够给UI提建议的，由于技术在编码的业余时间肯定会进行研究其它的app的UI的。肯定在UI建议上比UI的意见更专业。这个有没有同感我不知道。大家心里知道，嘿嘿。差点儿相同了，有新的进展的话博主还会补充的
以下是android的源码。丝毫没有改，先提取最重要的一段
switch (config.densityDpi) {
case DENSITY_DPI_UNDEFINED:
break;
case 120:
parts.add("ldpi");
break;
case 160:
parts.add("mdpi");
break;
case 213:
parts.add("tvdpi");
break;
case 240:
parts.add("hdpi");
break;
case 320:
parts.add("xhdpi");
break;
case 480:
parts.add("xxhdpi");
break;
case 640:
parts.add("xxxhdpi");
break;
case DENSITY_DPI_ANY:
parts.add("anydpi");
break;
case DENSITY_DPI_NONE:
parts.add("nodpi");
default:
parts.add(config.densityDpi + "dpi");
break;
}
然后是Configuration整个java类
/** * This class describes all device configuration information that can * impact the resources the application retrieves. This includes both * user-specified configuration options (locale and scaling) as well * as device configurations (such as input modes, screen size and screen orientation). * <p>You can acquire this object from {@link Resources}, using {@link * Resources#getConfiguration}. Thus, from an activity, you can get it by chaining the request * with {@link android.app.Activity#getResources}:</p> * <pre>Configuration config = getResources().getConfiguration();</pre> */ public final class Configuration implements Parcelable, Comparable<Configuration> { /** @hide */ public static final Configuration EMPTY = new Configuration(); /** * Current user preference for the scaling factor for fonts, relative * to the base density scaling. */ public float fontScale; /** * IMSI MCC (Mobile Country Code), corresponding to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#MccQualifier">mcc</a> * resource qualifier. 0 if undefined. */ public int mcc; /** * IMSI MNC (Mobile Network Code), corresponding to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#MccQualifier">mnc</a> * resource qualifier. 0 if undefined. Note that the actual MNC may be 0; in order to check * for this use the {@link #MNC_ZERO} symbol. */ public int mnc; /** * Constant used to to represent MNC (Mobile Network Code) zero. * 0 cannot be used, since it is used to represent an undefined MNC. */ public static final int MNC_ZERO = 0xffff; /** * Current user preference for the locale, corresponding to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#LocaleQualifier">locale</a> * resource qualifier. */ public Locale locale; /** * Locale should persist on setting. This is hidden because it is really * questionable whether this is the right way to expose the functionality. * @hide */ public boolean userSetLocale; /** Constant for {@link #screenLayout}: bits that encode the size. */ public static final int SCREENLAYOUT_SIZE_MASK = 0x0f; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} * value indicating that no size has been set. */ public static final int SCREENLAYOUT_SIZE_UNDEFINED = 0x00; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} * value indicating the screen is at least approximately 320x426 dp units, * corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">small</a> * resource qualifier. * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting * Multiple Screens</a> for more information. */ public static final int SCREENLAYOUT_SIZE_SMALL = 0x01; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} * value indicating the screen is at least approximately 320x470 dp units, * corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">normal</a> * resource qualifier. * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting * Multiple Screens</a> for more information. */ public static final int SCREENLAYOUT_SIZE_NORMAL = 0x02; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} * value indicating the screen is at least approximately 480x640 dp units, * corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">large</a> * resource qualifier. * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting * Multiple Screens</a> for more information. */ public static final int SCREENLAYOUT_SIZE_LARGE = 0x03; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} * value indicating the screen is at least approximately 720x960 dp units, * corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">xlarge</a> * resource qualifier. * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting * Multiple Screens</a> for more information.*/ public static final int SCREENLAYOUT_SIZE_XLARGE = 0x04; /** Constant for {@link #screenLayout}: bits that encode the aspect ratio. */ public static final int SCREENLAYOUT_LONG_MASK = 0x30; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LONG_MASK} * value indicating that no size has been set. */ public static final int SCREENLAYOUT_LONG_UNDEFINED = 0x00; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LONG_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenAspectQualifier">notlong</a> * resource qualifier. */ public static final int SCREENLAYOUT_LONG_NO = 0x10; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LONG_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenAspectQualifier">long</a> * resource qualifier. */ public static final int SCREENLAYOUT_LONG_YES = 0x20; /** Constant for {@link #screenLayout}: bits that encode the layout direction. */ public static final int SCREENLAYOUT_LAYOUTDIR_MASK = 0xC0; /** Constant for {@link #screenLayout}: bits shift to get the layout direction. */ public static final int SCREENLAYOUT_LAYOUTDIR_SHIFT = 6; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LAYOUTDIR_MASK} * value indicating that no layout dir has been set. */ public static final int SCREENLAYOUT_LAYOUTDIR_UNDEFINED = 0x00; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LAYOUTDIR_MASK} * value indicating that a layout dir has been set to LTR. */ public static final int SCREENLAYOUT_LAYOUTDIR_LTR = 0x01 << SCREENLAYOUT_LAYOUTDIR_SHIFT; /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LAYOUTDIR_MASK} * value indicating that a layout dir has been set to RTL. */ public static final int SCREENLAYOUT_LAYOUTDIR_RTL = 0x02 << SCREENLAYOUT_LAYOUTDIR_SHIFT; /** Constant for {@link #screenLayout}: a value indicating that screenLayout is undefined */ public static final int SCREENLAYOUT_UNDEFINED = SCREENLAYOUT_SIZE_UNDEFINED | SCREENLAYOUT_LONG_UNDEFINED | SCREENLAYOUT_LAYOUTDIR_UNDEFINED; /** * Special flag we generate to indicate that the screen layout requires * us to use a compatibility mode for apps that are not modern layout * aware. * @hide */ public static final int SCREENLAYOUT_COMPAT_NEEDED = 0x10000000; /** * Bit mask of overall layout of the screen. Currently there are two * fields: * <p>The {@link #SCREENLAYOUT_SIZE_MASK} bits define the overall size * of the screen. They may be one of * {@link #SCREENLAYOUT_SIZE_SMALL}, {@link #SCREENLAYOUT_SIZE_NORMAL}, * {@link #SCREENLAYOUT_SIZE_LARGE}, or {@link #SCREENLAYOUT_SIZE_XLARGE}. * * <p>The {@link #SCREENLAYOUT_LONG_MASK} defines whether the screen * is wider/taller than normal. They may be one of * {@link #SCREENLAYOUT_LONG_NO} or {@link #SCREENLAYOUT_LONG_YES}. * * <p>The {@link #SCREENLAYOUT_LAYOUTDIR_MASK} defines whether the screen layout * is either LTR or RTL. They may be one of * {@link #SCREENLAYOUT_LAYOUTDIR_LTR} or {@link #SCREENLAYOUT_LAYOUTDIR_RTL}. * * <p>See <a href="{@docRoot}guide/practices/screens_support.html">Supporting * Multiple Screens</a> for more information. */ public int screenLayout; /** @hide */ static public int resetScreenLayout(int curLayout) { return (curLayout&~(SCREENLAYOUT_LONG_MASK | SCREENLAYOUT_SIZE_MASK | SCREENLAYOUT_COMPAT_NEEDED)) | (SCREENLAYOUT_LONG_YES | SCREENLAYOUT_SIZE_XLARGE); } /** @hide */ static public int reduceScreenLayout(int curLayout, int longSizeDp, int shortSizeDp) { int screenLayoutSize; boolean screenLayoutLong; boolean screenLayoutCompatNeeded; // These semi-magic numbers define our compatibility modes for // applications with different screens. These are guarantees to // app developers about the space they can expect for a particular // configuration. DO NOT CHANGE! if (longSizeDp < 470) { // This is shorter than an HVGA normal density screen (which // is 480 pixels on its long side). screenLayoutSize = SCREENLAYOUT_SIZE_SMALL; screenLayoutLong = false; screenLayoutCompatNeeded = false; } else { // What size is this screen screen? if (longSizeDp >= 960 && shortSizeDp >= 720) { // 1.5xVGA or larger screens at medium density are the point // at which we consider it to be an extra large screen. screenLayoutSize = SCREENLAYOUT_SIZE_XLARGE; } else if (longSizeDp >= 640 && shortSizeDp >= 480) { // VGA or larger screens at medium density are the point // at which we consider it to be a large screen. screenLayoutSize = SCREENLAYOUT_SIZE_LARGE; } else { screenLayoutSize = SCREENLAYOUT_SIZE_NORMAL; } // If this screen is wider than normal HVGA, or taller // than FWVGA, then for old apps we want to run in size // compatibility mode. if (shortSizeDp > 321 || longSizeDp > 570) { screenLayoutCompatNeeded = true; } else { screenLayoutCompatNeeded = false; } // Is this a long screen? if (((longSizeDp*3)/5) >= (shortSizeDp-1)) { // Anything wider than WVGA (5:3) is considering to be long. screenLayoutLong = true; } else { screenLayoutLong = false; } } // Now reduce the last screenLayout to not be better than what we // have found. if (!screenLayoutLong) { curLayout = (curLayout&~SCREENLAYOUT_LONG_MASK) | SCREENLAYOUT_LONG_NO; } if (screenLayoutCompatNeeded) { curLayout |= Configuration.SCREENLAYOUT_COMPAT_NEEDED; } int curSize = curLayout&SCREENLAYOUT_SIZE_MASK; if (screenLayoutSize < curSize) { curLayout = (curLayout&~SCREENLAYOUT_SIZE_MASK) | screenLayoutSize; } return curLayout; } /** * Check if the Configuration's current {@link #screenLayout} is at * least the given size. * * @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL}, * {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or * {@link #SCREENLAYOUT_SIZE_XLARGE}. * @return Returns true if the current screen layout size is at least * the given size. */ public boolean isLayoutSizeAtLeast(int size) { int cur = screenLayout&SCREENLAYOUT_SIZE_MASK; if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false; return cur >= size; } /** Constant for {@link #touchscreen}: a value indicating that no value has been set. */ public static final int TOUCHSCREEN_UNDEFINED = 0; /** Constant for {@link #touchscreen}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#TouchscreenQualifier">notouch</a> * resource qualifier. */ public static final int TOUCHSCREEN_NOTOUCH = 1; /** @deprecated Not currently supported or used. */ @Deprecated public static final int TOUCHSCREEN_STYLUS = 2; /** Constant for {@link #touchscreen}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#TouchscreenQualifier">finger</a> * resource qualifier. */ public static final int TOUCHSCREEN_FINGER = 3; /** * The kind of touch screen attached to the device. * One of: {@link #TOUCHSCREEN_NOTOUCH}, {@link #TOUCHSCREEN_FINGER}. */ public int touchscreen; /** Constant for {@link #keyboard}: a value indicating that no value has been set. */ public static final int KEYBOARD_UNDEFINED = 0; /** Constant for {@link #keyboard}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ImeQualifier">nokeys</a> * resource qualifier. */ public static final int KEYBOARD_NOKEYS = 1; /** Constant for {@link #keyboard}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ImeQualifier">qwerty</a> * resource qualifier. */ public static final int KEYBOARD_QWERTY = 2; /** Constant for {@link #keyboard}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ImeQualifier">12key</a> * resource qualifier. */ public static final int KEYBOARD_12KEY = 3; /** * The kind of keyboard attached to the device. * One of: {@link #KEYBOARD_NOKEYS}, {@link #KEYBOARD_QWERTY}, * {@link #KEYBOARD_12KEY}. */ public int keyboard; /** Constant for {@link #keyboardHidden}: a value indicating that no value has been set. */ public static final int KEYBOARDHIDDEN_UNDEFINED = 0; /** Constant for {@link #keyboardHidden}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keysexposed</a> * resource qualifier. */ public static final int KEYBOARDHIDDEN_NO = 1; /** Constant for {@link #keyboardHidden}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keyshidden</a> * resource qualifier. */ public static final int KEYBOARDHIDDEN_YES = 2; /** Constant matching actual resource implementation. {@hide} */ public static final int KEYBOARDHIDDEN_SOFT = 3; /** * A flag indicating whether any keyboard is available. Unlike * {@link #hardKeyboardHidden}, this also takes into account a soft * keyboard, so if the hard keyboard is hidden but there is soft * keyboard available, it will be set to NO. Value is one of: * {@link #KEYBOARDHIDDEN_NO}, {@link #KEYBOARDHIDDEN_YES}. */ public int keyboardHidden; /** Constant for {@link #hardKeyboardHidden}: a value indicating that no value has been set. */ public static final int HARDKEYBOARDHIDDEN_UNDEFINED = 0; /** Constant for {@link #hardKeyboardHidden}, value corresponding to the * physical keyboard being exposed. */ public static final int HARDKEYBOARDHIDDEN_NO = 1; /** Constant for {@link #hardKeyboardHidden}, value corresponding to the * physical keyboard being hidden. */ public static final int HARDKEYBOARDHIDDEN_YES = 2; /** * A flag indicating whether the hard keyboard has been hidden. This will * be set on a device with a mechanism to hide the keyboard from the * user, when that mechanism is closed. One of: * {@link #HARDKEYBOARDHIDDEN_NO}, {@link #HARDKEYBOARDHIDDEN_YES}. */ public int hardKeyboardHidden; /** Constant for {@link #navigation}: a value indicating that no value has been set. */ public static final int NAVIGATION_UNDEFINED = 0; /** Constant for {@link #navigation}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">nonav</a> * resource qualifier. */ public static final int NAVIGATION_NONAV = 1; /** Constant for {@link #navigation}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">dpad</a> * resource qualifier. */ public static final int NAVIGATION_DPAD = 2; /** Constant for {@link #navigation}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">trackball</a> * resource qualifier. */ public static final int NAVIGATION_TRACKBALL = 3; /** Constant for {@link #navigation}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">wheel</a> * resource qualifier. */ public static final int NAVIGATION_WHEEL = 4; /** * The kind of navigation method available on the device. * One of: {@link #NAVIGATION_NONAV}, {@link #NAVIGATION_DPAD}, * {@link #NAVIGATION_TRACKBALL}, {@link #NAVIGATION_WHEEL}. */ public int navigation; /** Constant for {@link #navigationHidden}: a value indicating that no value has been set. */ public static final int NAVIGATIONHIDDEN_UNDEFINED = 0; /** Constant for {@link #navigationHidden}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavAvailQualifier">navexposed</a> * resource qualifier. */ public static final int NAVIGATIONHIDDEN_NO = 1; /** Constant for {@link #navigationHidden}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavAvailQualifier">navhidden</a> * resource qualifier. */ public static final int NAVIGATIONHIDDEN_YES = 2; /** * A flag indicating whether any 5-way or DPAD navigation available. * This will be set on a device with a mechanism to hide the navigation * controls from the user, when that mechanism is closed. One of: * {@link #NAVIGATIONHIDDEN_NO}, {@link #NAVIGATIONHIDDEN_YES}. */ public int navigationHidden; /** Constant for {@link #orientation}: a value indicating that no value has been set. */ public static final int ORIENTATION_UNDEFINED = 0; /** Constant for {@link #orientation}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#OrientationQualifier">port</a> * resource qualifier. */ public static final int ORIENTATION_PORTRAIT = 1; /** Constant for {@link #orientation}, value corresponding to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#OrientationQualifier">land</a> * resource qualifier. */ public static final int ORIENTATION_LANDSCAPE = 2; /** @deprecated Not currently supported or used. */ @Deprecated public static final int ORIENTATION_SQUARE = 3; /** * Overall orientation of the screen. May be one of * {@link #ORIENTATION_LANDSCAPE}, {@link #ORIENTATION_PORTRAIT}. */ public int orientation; /** Constant for {@link #uiMode}: bits that encode the mode type. */ public static final int UI_MODE_TYPE_MASK = 0x0f; /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK} * value indicating that no mode type has been set. */ public static final int UI_MODE_TYPE_UNDEFINED = 0x00; /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK} * value that corresponds to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">no * UI mode</a> resource qualifier specified. */ public static final int UI_MODE_TYPE_NORMAL = 0x01; /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">desk</a> * resource qualifier. */ public static final int UI_MODE_TYPE_DESK = 0x02; /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">car</a> * resource qualifier. */ public static final int UI_MODE_TYPE_CAR = 0x03; /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">television</a> * resource qualifier. */ public static final int UI_MODE_TYPE_TELEVISION = 0x04; /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">appliance</a> * resource qualifier. */ public static final int UI_MODE_TYPE_APPLIANCE = 0x05; /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">watch</a> * resource qualifier. */ public static final int UI_MODE_TYPE_WATCH = 0x06; /** Constant for {@link #uiMode}: bits that encode the night mode. */ public static final int UI_MODE_NIGHT_MASK = 0x30; /** Constant for {@link #uiMode}: a {@link #UI_MODE_NIGHT_MASK} * value indicating that no mode type has been set. */ public static final int UI_MODE_NIGHT_UNDEFINED = 0x00; /** Constant for {@link #uiMode}: a {@link #UI_MODE_NIGHT_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NightQualifier">notnight</a> * resource qualifier. */ public static final int UI_MODE_NIGHT_NO = 0x10; /** Constant for {@link #uiMode}: a {@link #UI_MODE_NIGHT_MASK} * value that corresponds to the * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NightQualifier">night</a> * resource qualifier. */ public static final int UI_MODE_NIGHT_YES = 0x20; /** * Bit mask of the ui mode. Currently there are two fields: * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED}, * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK}, * {@link #UI_MODE_TYPE_CAR}, {@link #UI_MODE_TYPE_TELEVISION}, * {@link #UI_MODE_TYPE_APPLIANCE}, or {@link #UI_MODE_TYPE_WATCH}. * * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED}, * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}. */ public int uiMode; /** * Default value for {@link #screenWidthDp} indicating that no width * has been specified. */ public static final int SCREEN_WIDTH_DP_UNDEFINED = 0; /** * The current width of the available screen space, in dp units, * corresponding to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenWidthQualifier">screen * width</a> resource qualifier. Set to * {@link #SCREEN_WIDTH_DP_UNDEFINED} if no width is specified. */ public int screenWidthDp; /** * Default value for {@link #screenHeightDp} indicating that no width * has been specified. */ public static final int SCREEN_HEIGHT_DP_UNDEFINED = 0; /** * The current height of the available screen space, in dp units, * corresponding to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenHeightQualifier">screen * height</a> resource qualifier. Set to * {@link #SCREEN_HEIGHT_DP_UNDEFINED} if no height is specified. */ public int screenHeightDp; /** * Default value for {@link #smallestScreenWidthDp} indicating that no width * has been specified. */ public static final int SMALLEST_SCREEN_WIDTH_DP_UNDEFINED = 0; /** * The smallest screen size an application will see in normal operation, * corresponding to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#SmallestScreenWidthQualifier">smallest * screen width</a> resource qualifier. * This is the smallest value of both screenWidthDp and screenHeightDp * in both portrait and landscape. Set to * {@link #SMALLEST_SCREEN_WIDTH_DP_UNDEFINED} if no width is specified. */ public int smallestScreenWidthDp; /** * Default value for {@link #densityDpi} indicating that no width * has been specified. */ public static final int DENSITY_DPI_UNDEFINED = 0; /** * Value for {@link #densityDpi} for resources that scale to any density (vector drawables). * {@hide} */ public static final int DENSITY_DPI_ANY = 0xfffe; /** * Value for {@link #densityDpi} for resources that are not meant to be scaled. * {@hide} */ public static final int DENSITY_DPI_NONE = 0xffff; /** * The target screen density being rendered to, * corresponding to * <a href="{@docRoot}guide/topics/resources/providing-resources.html#DensityQualifier">density</a> * resource qualifier. Set to * {@link #DENSITY_DPI_UNDEFINED} if no density is specified. */ public int densityDpi; /** @hide Hack to get this information from WM to app running in compat mode. */ public int compatScreenWidthDp; /** @hide Hack to get this information from WM to app running in compat mode. */ public int compatScreenHeightDp; /** @hide Hack to get this information from WM to app running in compat mode. */ public int compatSmallestScreenWidthDp; /** * @hide Internal book-keeping. */ public int seq; /** @hide Native-specific bit mask for MCC config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_MCC = 0x0001; /** @hide Native-specific bit mask for MNC config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_MNC = 0x0002; /** @hide Native-specific bit mask for LOCALE config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_LOCALE = 0x0004; /** @hide Native-specific bit mask for TOUCHSCREEN config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_TOUCHSCREEN = 0x0008; /** @hide Native-specific bit mask for KEYBOARD config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_KEYBOARD = 0x0010; /** @hide Native-specific bit mask for KEYBOARD_HIDDEN config; DO NOT USE UNLESS YOU * ARE SURE. */ public static final int NATIVE_CONFIG_KEYBOARD_HIDDEN = 0x0020; /** @hide Native-specific bit mask for NAVIGATION config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_NAVIGATION = 0x0040; /** @hide Native-specific bit mask for ORIENTATION config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_ORIENTATION = 0x0080; /** @hide Native-specific bit mask for DENSITY config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_DENSITY = 0x0100; /** @hide Native-specific bit mask for SCREEN_SIZE config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_SCREEN_SIZE = 0x0200; /** @hide Native-specific bit mask for VERSION config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_VERSION = 0x0400; /** @hide Native-specific bit mask for SCREEN_LAYOUT config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_SCREEN_LAYOUT = 0x0800; /** @hide Native-specific bit mask for UI_MODE config; DO NOT USE UNLESS YOU ARE SURE. */ public static final int NATIVE_CONFIG_UI_MODE = 0x1000; /** @hide Native-specific bit mask for SMALLEST_SCREEN_SIZE config; DO NOT USE UNLESS YOU * ARE SURE. */ public static final int NATIVE_CONFIG_SMALLEST_SCREEN_SIZE = 0x2000; /** @hide Native-specific bit mask for LAYOUTDIR config ; DO NOT USE UNLESS YOU ARE SURE.*/ public static final int NATIVE_CONFIG_LAYOUTDIR = 0x4000; /** * Construct an invalid Configuration. You must call {@link #setToDefaults} * for this object to be valid. {@more} */ public Configuration() { setToDefaults(); } /** * Makes a deep copy suitable for modification. */ public Configuration(Configuration o) { setTo(o); } public void setTo(Configuration o) { fontScale = o.fontScale; mcc = o.mcc; mnc = o.mnc; if (o.locale != null) { locale = (Locale) o.locale.clone(); } userSetLocale = o.userSetLocale; touchscreen = o.touchscreen; keyboard = o.keyboard; keyboardHidden = o.keyboardHidden; hardKeyboardHidden = o.hardKeyboardHidden; navigation = o.navigation; navigationHidden = o.navigationHidden; orientation = o.orientation; screenLayout = o.screenLayout; uiMode = o.uiMode; screenWidthDp = o.screenWidthDp; screenHeightDp = o.screenHeightDp; smallestScreenWidthDp = o.smallestScreenWidthDp; densityDpi = o.densityDpi; compatScreenWidthDp = o.compatScreenWidthDp; compatScreenHeightDp = o.compatScreenHeightDp; compatSmallestScreenWidthDp = o.compatSmallestScreenWidthDp; seq = o.seq; } public String toString() { StringBuilder sb = new StringBuilder(128); sb.append("{"); sb.append(fontScale); sb.append(" "); if (mcc != 0) { sb.append(mcc); sb.append("mcc"); } else { sb.append("?mcc"); } if (mnc != 0) { sb.append(mnc); sb.append("mnc"); } else { sb.append("?mnc"); } if (locale != null) { sb.append(" "); sb.append(locale); } else { sb.append(" ?locale"); } int layoutDir = (screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK); switch (layoutDir) { case SCREENLAYOUT_LAYOUTDIR_UNDEFINED: sb.append(" ?
layoutDir"); break; case SCREENLAYOUT_LAYOUTDIR_LTR: sb.append(" ldltr"); break; case SCREENLAYOUT_LAYOUTDIR_RTL: sb.append(" ldrtl"); break; default: sb.append(" layoutDir="); sb.append(layoutDir >> SCREENLAYOUT_LAYOUTDIR_SHIFT); break; } if (smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { sb.append(" sw"); sb.append(smallestScreenWidthDp); sb.append("dp"); } else { sb.append(" ?
swdp"); } if (screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { sb.append(" w"); sb.append(screenWidthDp); sb.append("dp"); } else { sb.append(" ?wdp"); } if (screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { sb.append(" h"); sb.append(screenHeightDp); sb.append("dp"); } else { sb.append(" ?
hdp"); } if (densityDpi != DENSITY_DPI_UNDEFINED) { sb.append(" "); sb.append(densityDpi); sb.append("dpi"); } else { sb.append(" ?density"); } switch ((screenLayout&SCREENLAYOUT_SIZE_MASK)) { case SCREENLAYOUT_SIZE_UNDEFINED: sb.append(" ?
lsize"); break; case SCREENLAYOUT_SIZE_SMALL: sb.append(" smll"); break; case SCREENLAYOUT_SIZE_NORMAL: sb.append(" nrml"); break; case SCREENLAYOUT_SIZE_LARGE: sb.append(" lrg"); break; case SCREENLAYOUT_SIZE_XLARGE: sb.append(" xlrg"); break; default: sb.append(" layoutSize="); sb.append(screenLayout&SCREENLAYOUT_SIZE_MASK); break; } switch ((screenLayout&SCREENLAYOUT_LONG_MASK)) { case SCREENLAYOUT_LONG_UNDEFINED: sb.append(" ?long"); break; case SCREENLAYOUT_LONG_NO: /* not-long is not interesting to print */ break; case SCREENLAYOUT_LONG_YES: sb.append(" long"); break; default: sb.append(" layoutLong="); sb.append(screenLayout&SCREENLAYOUT_LONG_MASK); break; } switch (orientation) { case ORIENTATION_UNDEFINED: sb.append(" ?orien"); break; case ORIENTATION_LANDSCAPE: sb.append(" land"); break; case ORIENTATION_PORTRAIT: sb.append(" port"); break; default: sb.append(" orien="); sb.append(orientation); break; } switch ((uiMode&UI_MODE_TYPE_MASK)) { case UI_MODE_TYPE_UNDEFINED: sb.append(" ?uimode"); break; case UI_MODE_TYPE_NORMAL: /* normal is not interesting to print */ break; case UI_MODE_TYPE_DESK: sb.append(" desk"); break; case UI_MODE_TYPE_CAR: sb.append(" car"); break; case UI_MODE_TYPE_TELEVISION: sb.append(" television"); break; case UI_MODE_TYPE_APPLIANCE: sb.append(" appliance"); break; case UI_MODE_TYPE_WATCH: sb.append(" watch"); break; default: sb.append(" uimode="); sb.append(uiMode&UI_MODE_TYPE_MASK); break; } switch ((uiMode&UI_MODE_NIGHT_MASK)) { case UI_MODE_NIGHT_UNDEFINED: sb.append(" ?night"); break; case UI_MODE_NIGHT_NO: /* not-night is not interesting to print */ break; case UI_MODE_NIGHT_YES: sb.append(" night"); break; default: sb.append(" night="); sb.append(uiMode&UI_MODE_NIGHT_MASK); break; } switch (touchscreen) { case TOUCHSCREEN_UNDEFINED: sb.append(" ?touch"); break; case TOUCHSCREEN_NOTOUCH: sb.append(" -touch"); break; case TOUCHSCREEN_STYLUS: sb.append(" stylus"); break; case TOUCHSCREEN_FINGER: sb.append(" finger"); break; default: sb.append(" touch="); sb.append(touchscreen); break; } switch (keyboard) { case KEYBOARD_UNDEFINED: sb.append(" ?keyb"); break; case KEYBOARD_NOKEYS: sb.append(" -keyb"); break; case KEYBOARD_QWERTY: sb.append(" qwerty"); break; case KEYBOARD_12KEY: sb.append(" 12key"); break; default: sb.append(" keys="); sb.append(keyboard); break; } switch (keyboardHidden) { case KEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; case KEYBOARDHIDDEN_NO: sb.append("/v"); break; case KEYBOARDHIDDEN_YES: sb.append("/h"); break; case KEYBOARDHIDDEN_SOFT: sb.append("/s"); break; default: sb.append("/"); sb.append(keyboardHidden); break; } switch (hardKeyboardHidden) { case HARDKEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; case HARDKEYBOARDHIDDEN_NO: sb.append("/v"); break; case HARDKEYBOARDHIDDEN_YES: sb.append("/h"); break; default: sb.append("/"); sb.append(hardKeyboardHidden); break; } switch (navigation) { case NAVIGATION_UNDEFINED: sb.append(" ?nav"); break; case NAVIGATION_NONAV: sb.append(" -nav"); break; case NAVIGATION_DPAD: sb.append(" dpad"); break; case NAVIGATION_TRACKBALL: sb.append(" tball"); break; case NAVIGATION_WHEEL: sb.append(" wheel"); break; default: sb.append(" nav="); sb.append(navigation); break; } switch (navigationHidden) { case NAVIGATIONHIDDEN_UNDEFINED: sb.append("/?
"); break; case NAVIGATIONHIDDEN_NO: sb.append("/v"); break; case NAVIGATIONHIDDEN_YES: sb.append("/h"); break; default: sb.append("/"); sb.append(navigationHidden); break; } if (seq != 0) { sb.append(" s."); sb.append(seq); } sb.append('}'); return sb.toString(); } /** * Set this object to the system defaults. */ public void setToDefaults() { fontScale = 1; mcc = mnc = 0; locale = null; userSetLocale = false; touchscreen = TOUCHSCREEN_UNDEFINED; keyboard = KEYBOARD_UNDEFINED; keyboardHidden = KEYBOARDHIDDEN_UNDEFINED; hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED; navigation = NAVIGATION_UNDEFINED; navigationHidden = NAVIGATIONHIDDEN_UNDEFINED; orientation = ORIENTATION_UNDEFINED; screenLayout = SCREENLAYOUT_UNDEFINED; uiMode = UI_MODE_TYPE_UNDEFINED; screenWidthDp = compatScreenWidthDp = SCREEN_WIDTH_DP_UNDEFINED; screenHeightDp = compatScreenHeightDp = SCREEN_HEIGHT_DP_UNDEFINED; smallestScreenWidthDp = compatSmallestScreenWidthDp = SMALLEST_SCREEN_WIDTH_DP_UNDEFINED; densityDpi = DENSITY_DPI_UNDEFINED; seq = 0; } /** {@hide} */ @Deprecated public void makeDefault() { setToDefaults(); } /** * Copy the fields from delta into this Configuration object, keeping * track of which ones have changed. Any undefined fields in * <var>delta</var> are ignored and not copied in to the current * Configuration. * @return Returns a bit mask of the changed fields, as per * {@link #diff}. */ public int updateFrom(Configuration delta) { int changed = 0; if (delta.fontScale > 0 && fontScale != delta.fontScale) { changed |= ActivityInfo.CONFIG_FONT_SCALE; fontScale = delta.fontScale; } if (delta.mcc != 0 && mcc != delta.mcc) { changed |= ActivityInfo.CONFIG_MCC; mcc = delta.mcc; } if (delta.mnc != 0 && mnc != delta.mnc) { changed |= ActivityInfo.CONFIG_MNC; mnc = delta.mnc; } if (delta.locale != null && (locale == null || !locale.equals(delta.locale))) { changed |= ActivityInfo.CONFIG_LOCALE; locale = delta.locale != null ? (Locale) delta.locale.clone() : null; // If locale has changed, then layout direction is also changed ... changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION; // ... and we need to update the layout direction (represented by the first // 2 most significant bits in screenLayout). setLayoutDirection(locale); } final int deltaScreenLayoutDir = delta.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK; if (deltaScreenLayoutDir != SCREENLAYOUT_LAYOUTDIR_UNDEFINED && deltaScreenLayoutDir != (screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK)) { screenLayout = (screenLayout & ~SCREENLAYOUT_LAYOUTDIR_MASK) | deltaScreenLayoutDir; changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION; } if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0))) { changed |= ActivityInfo.CONFIG_LOCALE; userSetLocale = true; } if (delta.touchscreen != TOUCHSCREEN_UNDEFINED && touchscreen != delta.touchscreen) { changed |= ActivityInfo.CONFIG_TOUCHSCREEN; touchscreen = delta.touchscreen; } if (delta.keyboard != KEYBOARD_UNDEFINED && keyboard != delta.keyboard) { changed |= ActivityInfo.CONFIG_KEYBOARD; keyboard = delta.keyboard; } if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED && keyboardHidden != delta.keyboardHidden) { changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; keyboardHidden = delta.keyboardHidden; } if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED && hardKeyboardHidden != delta.hardKeyboardHidden) { changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; hardKeyboardHidden = delta.hardKeyboardHidden; } if (delta.navigation != NAVIGATION_UNDEFINED && navigation != delta.navigation) { changed |= ActivityInfo.CONFIG_NAVIGATION; navigation = delta.navigation; } if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED && navigationHidden != delta.navigationHidden) { changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; navigationHidden = delta.navigationHidden; } if (delta.orientation != ORIENTATION_UNDEFINED && orientation != delta.orientation) { changed |= ActivityInfo.CONFIG_ORIENTATION; orientation = delta.orientation; } if (getScreenLayoutNoDirection(delta.screenLayout) != (SCREENLAYOUT_SIZE_UNDEFINED | SCREENLAYOUT_LONG_UNDEFINED) && (getScreenLayoutNoDirection(screenLayout) != getScreenLayoutNoDirection(delta.screenLayout))) { changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; // We need to preserve the previous layout dir bits if they were defined if ((delta.screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK) == 0) { screenLayout = (screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK)|delta.screenLayout; } else { screenLayout = delta.screenLayout; } } if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) && uiMode != delta.uiMode) { changed |= ActivityInfo.CONFIG_UI_MODE; if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) { uiMode = (uiMode&~UI_MODE_TYPE_MASK) | (delta.uiMode&UI_MODE_TYPE_MASK); } if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) { uiMode = (uiMode&~UI_MODE_NIGHT_MASK) | (delta.uiMode&UI_MODE_NIGHT_MASK); } } if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED && screenWidthDp != delta.screenWidthDp) { changed |= ActivityInfo.CONFIG_SCREEN_SIZE; screenWidthDp = delta.screenWidthDp; } if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED && screenHeightDp != delta.screenHeightDp) { changed |= ActivityInfo.CONFIG_SCREEN_SIZE; screenHeightDp = delta.screenHeightDp; } if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED && smallestScreenWidthDp != delta.smallestScreenWidthDp) { changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; smallestScreenWidthDp = delta.smallestScreenWidthDp; } if (delta.densityDpi != DENSITY_DPI_UNDEFINED && densityDpi != delta.densityDpi) { changed |= ActivityInfo.CONFIG_DENSITY; densityDpi = delta.densityDpi; } if (delta.compatScreenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { compatScreenWidthDp = delta.compatScreenWidthDp; } if (delta.compatScreenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { compatScreenHeightDp = delta.compatScreenHeightDp; } if (delta.compatSmallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { compatSmallestScreenWidthDp = delta.compatSmallestScreenWidthDp; } if (delta.seq != 0) { seq = delta.seq; } return changed; } /** * Return a bit mask of the differences between this Configuration * object and the given one. Does not change the values of either. Any * undefined fields in <var>delta</var> are ignored. * @return Returns a bit mask indicating which configuration * values has changed, containing any combination of * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE * PackageManager.ActivityInfo.CONFIG_FONT_SCALE}, * {@link android.content.pm.ActivityInfo#CONFIG_MCC * PackageManager.ActivityInfo.CONFIG_MCC}, * {@link android.content.pm.ActivityInfo#CONFIG_MNC * PackageManager.ActivityInfo.CONFIG_MNC}, * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE * PackageManager.ActivityInfo.CONFIG_LOCALE}, * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN}, * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD * PackageManager.ActivityInfo.CONFIG_KEYBOARD}, * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION * PackageManager.ActivityInfo.CONFIG_NAVIGATION}, * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION * PackageManager.ActivityInfo.CONFIG_ORIENTATION}, * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}, or * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE * PackageManager.ActivityInfo.CONFIG_SCREEN_SIZE}, or * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE * PackageManager.ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE}. * {@link android.content.pm.ActivityInfo#CONFIG_LAYOUT_DIRECTION * PackageManager.ActivityInfo.CONFIG_LAYOUT_DIRECTION}. */ public int diff(Configuration delta) { int changed = 0; if (delta.fontScale > 0 && fontScale != delta.fontScale) { changed |= ActivityInfo.CONFIG_FONT_SCALE; } if (delta.mcc != 0 && mcc != delta.mcc) { changed |= ActivityInfo.CONFIG_MCC; } if (delta.mnc != 0 && mnc != delta.mnc) { changed |= ActivityInfo.CONFIG_MNC; } if (delta.locale != null && (locale == null || !locale.equals(delta.locale))) { changed |= ActivityInfo.CONFIG_LOCALE; changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION; } final int deltaScreenLayoutDir = delta.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK; if (deltaScreenLayoutDir != SCREENLAYOUT_LAYOUTDIR_UNDEFINED && deltaScreenLayoutDir != (screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK)) { changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION; } if (delta.touchscreen != TOUCHSCREEN_UNDEFINED && touchscreen != delta.touchscreen) { changed |= ActivityInfo.CONFIG_TOUCHSCREEN; } if (delta.keyboard != KEYBOARD_UNDEFINED && keyboard != delta.keyboard) { changed |= ActivityInfo.CONFIG_KEYBOARD; } if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED && keyboardHidden != delta.keyboardHidden) { changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; } if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED && hardKeyboardHidden != delta.hardKeyboardHidden) { changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; } if (delta.navigation != NAVIGATION_UNDEFINED && navigation != delta.navigation) { changed |= ActivityInfo.CONFIG_NAVIGATION; } if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED && navigationHidden != delta.navigationHidden) { changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; } if (delta.orientation != ORIENTATION_UNDEFINED && orientation != delta.orientation) { changed |= ActivityInfo.CONFIG_ORIENTATION; } if (getScreenLayoutNoDirection(delta.screenLayout) != (SCREENLAYOUT_SIZE_UNDEFINED | SCREENLAYOUT_LONG_UNDEFINED) && getScreenLayoutNoDirection(screenLayout) != getScreenLayoutNoDirection(delta.screenLayout)) { changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; } if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) && uiMode != delta.uiMode) { changed |= ActivityInfo.CONFIG_UI_MODE; } if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED && screenWidthDp != delta.screenWidthDp) { changed |= ActivityInfo.CONFIG_SCREEN_SIZE; } if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED && screenHeightDp != delta.screenHeightDp) { changed |= ActivityInfo.CONFIG_SCREEN_SIZE; } if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED && smallestScreenWidthDp != delta.smallestScreenWidthDp) { changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; } if (delta.densityDpi != DENSITY_DPI_UNDEFINED && densityDpi != delta.densityDpi) { changed |= ActivityInfo.CONFIG_DENSITY; } return changed; } /** * Determine if a new resource needs to be loaded from the bit set of * configuration changes returned by {@link #updateFrom(Configuration)}. * * @param configChanges The mask of changes configurations as returned by * {@link #updateFrom(Configuration)}. * @param interestingChanges The configuration changes that the resource * can handled, as given in {@link android.util.TypedValue#changingConfigurations}. * * @return Return true if the resource needs to be loaded, else false. */ public static boolean needNewResources(int configChanges, int interestingChanges) { return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0; } /** * @hide Return true if the sequence of 'other' is better than this. Assumes * that 'this' is your current sequence and 'other' is a new one you have * received some how and want to compare with what you have. */ public boolean isOtherSeqNewer(Configuration other) { if (other == null) { // Sanity check. return false; } if (other.seq == 0) { // If the other sequence is not specified, then we must assume // it is newer since we don't know any better. return true; } if (seq == 0) { // If this sequence is not specified, then we also consider the // other is better. Yes we have a preference for other. Sue us. return true; } int diff = other.seq - seq; if (diff > 0x10000) { // If there has been a sufficiently large jump, assume the // sequence has wrapped around. return false; } return diff > 0; } /** * Parcelable methods */ public int describeContents() { return 0; } public void writeToParcel(Parcel dest, int flags) { dest.writeFloat(fontScale); dest.writeInt(mcc); dest.writeInt(mnc); if (locale == null) { dest.writeInt(0); } else { dest.writeInt(1); dest.writeString(locale.getLanguage()); dest.writeString(locale.getCountry()); dest.writeString(locale.getVariant()); } if(userSetLocale) { dest.writeInt(1); } else { dest.writeInt(0); } dest.writeInt(touchscreen); dest.writeInt(keyboard); dest.writeInt(keyboardHidden); dest.writeInt(hardKeyboardHidden); dest.writeInt(navigation); dest.writeInt(navigationHidden); dest.writeInt(orientation); dest.writeInt(screenLayout); dest.writeInt(uiMode); dest.writeInt(screenWidthDp); dest.writeInt(screenHeightDp); dest.writeInt(smallestScreenWidthDp); dest.writeInt(densityDpi); dest.writeInt(compatScreenWidthDp); dest.writeInt(compatScreenHeightDp); dest.writeInt(compatSmallestScreenWidthDp); dest.writeInt(seq); } public void readFromParcel(Parcel source) { fontScale = source.readFloat(); mcc = source.readInt(); mnc = source.readInt(); if (source.readInt() != 0) { locale = new Locale(source.readString(), source.readString(), source.readString()); } userSetLocale = (source.readInt()==1); touchscreen = source.readInt(); keyboard = source.readInt(); keyboardHidden = source.readInt(); hardKeyboardHidden = source.readInt(); navigation = source.readInt(); navigationHidden = source.readInt(); orientation = source.readInt(); screenLayout = source.readInt(); uiMode = source.readInt(); screenWidthDp = source.readInt(); screenHeightDp = source.readInt(); smallestScreenWidthDp = source.readInt(); densityDpi = source.readInt(); compatScreenWidthDp = source.readInt(); compatScreenHeightDp = source.readInt(); compatSmallestScreenWidthDp = source.readInt(); seq = source.readInt(); } public static final Parcelable.Creator<Configuration> CREATOR = new Parcelable.Creator<Configuration>() { public Configuration createFromParcel(Parcel source) { return new Configuration(source); } public Configuration[] newArray(int size) { return new Configuration[size]; } }; /** * Construct this Configuration object, reading from the Parcel. */ private Configuration(Parcel source) { readFromParcel(source); } public int compareTo(Configuration that) { int n; float a = this.fontScale; float b = that.fontScale; if (a < b) return -1; if (a > b) return 1; n = this.mcc - that.mcc; if (n != 0) return n; n = this.mnc - that.mnc; if (n != 0) return n; if (this.locale == null) { if (that.locale != null) return 1; } else if (that.locale == null) { return -1; } else { n = this.locale.getLanguage().compareTo(that.locale.getLanguage()); if (n != 0) return n; n = this.locale.getCountry().compareTo(that.locale.getCountry()); if (n != 0) return n; n = this.locale.getVariant().compareTo(that.locale.getVariant()); if (n != 0) return n; } n = this.touchscreen - that.touchscreen; if (n != 0) return n; n = this.keyboard - that.keyboard; if (n != 0) return n; n = this.keyboardHidden - that.keyboardHidden; if (n != 0) return n; n = this.hardKeyboardHidden - that.hardKeyboardHidden; if (n != 0) return n; n = this.navigation - that.navigation; if (n != 0) return n; n = this.navigationHidden - that.navigationHidden; if (n != 0) return n; n = this.orientation - that.orientation; if (n != 0) return n; n = this.screenLayout - that.screenLayout; if (n != 0) return n; n = this.uiMode - that.uiMode; if (n != 0) return n; n = this.screenWidthDp - that.screenWidthDp; if (n != 0) return n; n = this.screenHeightDp - that.screenHeightDp; if (n != 0) return n; n = this.smallestScreenWidthDp - that.smallestScreenWidthDp; if (n != 0) return n; n = this.densityDpi - that.densityDpi; //if (n != 0) return n; return n; } public boolean equals(Configuration that) { if (that == null) return false; if (that == this) return true; return this.compareTo(that) == 0; } public boolean equals(Object that) { try { return equals((Configuration)that); } catch (ClassCastException e) { } return false; } public int hashCode() { int result = 17; result = 31 * result + Float.floatToIntBits(fontScale); result = 31 * result + mcc; result = 31 * result + mnc; result = 31 * result + (locale != null ? locale.hashCode() : 0); result = 31 * result + touchscreen; result = 31 * result + keyboard; result = 31 * result + keyboardHidden; result = 31 * result + hardKeyboardHidden; result = 31 * result + navigation; result = 31 * result + navigationHidden; result = 31 * result + orientation; result = 31 * result + screenLayout; result = 31 * result + uiMode; result = 31 * result + screenWidthDp; result = 31 * result + screenHeightDp; result = 31 * result + smallestScreenWidthDp; result = 31 * result + densityDpi; return result; } /** * Set the locale. This is the preferred way for setting up the locale (instead of using the * direct accessor). This will also set the userLocale and layout direction according to * the locale. * * @param loc The locale. Can be null. */ public void setLocale(Locale loc) { locale = loc; userSetLocale = true; setLayoutDirection(locale); } /** * Return the layout direction. Will be either {@link View#LAYOUT_DIRECTION_LTR} or * {@link View#LAYOUT_DIRECTION_RTL}. * * @return Returns {@link View#LAYOUT_DIRECTION_RTL} if the configuration * is {@link #SCREENLAYOUT_LAYOUTDIR_RTL}, otherwise {@link View#LAYOUT_DIRECTION_LTR}. */ public int getLayoutDirection() { return (screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK) == SCREENLAYOUT_LAYOUTDIR_RTL ?
View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR; } /** * Set the layout direction from the Locale. * * @param locale The Locale. If null will set the layout direction to * {@link View#LAYOUT_DIRECTION_LTR}. If not null will set it to the layout direction * corresponding to the Locale. * * @see {@link View#LAYOUT_DIRECTION_LTR} and {@link View#LAYOUT_DIRECTION_RTL} */ public void setLayoutDirection(Locale locale) { // There is a "1" difference between the configuration values for // layout direction and View constants for layout direction, just add "1". final int layoutDirection = 1 + TextUtils.getLayoutDirectionFromLocale(locale); screenLayout = (screenLayout&~SCREENLAYOUT_LAYOUTDIR_MASK)| (layoutDirection << SCREENLAYOUT_LAYOUTDIR_SHIFT); } private static int getScreenLayoutNoDirection(int screenLayout) { return screenLayout&~SCREENLAYOUT_LAYOUTDIR_MASK; } /** * * @hide */ public static String localeToResourceQualifier(Locale locale) { StringBuilder sb = new StringBuilder(); boolean l = (locale.getLanguage().length() != 0); boolean c = (locale.getCountry().length() != 0); boolean s = (locale.getScript().length() != 0); boolean v = (locale.getVariant().length() != 0); if (l) { sb.append(locale.getLanguage()); if (c) { sb.append("-r").append(locale.getCountry()); if (s) { sb.append("-s").append(locale.getScript()); if (v) { sb.append("-v").append(locale.getVariant()); } } } } return sb.toString(); } /** * Returns a string representation of the configuration that can be parsed * by build tools (like AAPT). * * @hide */ public static String resourceQualifierString(Configuration config) { ArrayList<String> parts = new ArrayList<String>(); if (config.mcc != 0) { parts.add("mcc" + config.mcc); if (config.mnc != 0) { parts.add("mnc" + config.mnc); } } if (config.locale != null && !config.locale.getLanguage().isEmpty()) { parts.add(localeToResourceQualifier(config.locale)); } switch (config.screenLayout & Configuration.SCREENLAYOUT_LAYOUTDIR_MASK) { case Configuration.SCREENLAYOUT_LAYOUTDIR_LTR: parts.add("ldltr"); break; case Configuration.SCREENLAYOUT_LAYOUTDIR_RTL: parts.add("ldrtl"); break; default: break; } if (config.smallestScreenWidthDp != 0) { parts.add("sw" + config.smallestScreenWidthDp + "dp"); } if (config.screenWidthDp != 0) { parts.add("w" + config.screenWidthDp + "dp"); } if (config.screenHeightDp != 0) { parts.add("h" + config.screenHeightDp + "dp"); } switch (config.screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) { case Configuration.SCREENLAYOUT_SIZE_SMALL: parts.add("small"); break; case Configuration.SCREENLAYOUT_SIZE_NORMAL: parts.add("normal"); break; case Configuration.SCREENLAYOUT_SIZE_LARGE: parts.add("large"); break; case Configuration.SCREENLAYOUT_SIZE_XLARGE: parts.add("xlarge"); break; default: break; } switch (config.screenLayout & Configuration.SCREENLAYOUT_LONG_MASK) { case Configuration.SCREENLAYOUT_LONG_YES: parts.add("long"); break; case Configuration.SCREENLAYOUT_LONG_NO: parts.add("notlong"); break; default: break; } switch (config.orientation) { case Configuration.ORIENTATION_LANDSCAPE: parts.add("land"); break; case Configuration.ORIENTATION_PORTRAIT: parts.add("port"); break; default: break; } switch (config.uiMode & Configuration.UI_MODE_TYPE_MASK) { case Configuration.UI_MODE_TYPE_APPLIANCE: parts.add("appliance"); break; case Configuration.UI_MODE_TYPE_DESK: parts.add("desk"); break; case Configuration.UI_MODE_TYPE_TELEVISION: parts.add("television"); break; case Configuration.UI_MODE_TYPE_CAR: parts.add("car"); break; case Configuration.UI_MODE_TYPE_WATCH: parts.add("watch"); break; default: break; } switch (config.uiMode & Configuration.UI_MODE_NIGHT_MASK) { case Configuration.UI_MODE_NIGHT_YES: parts.add("night"); break; case Configuration.UI_MODE_NIGHT_NO: parts.add("notnight"); break; default: break; } switch (config.densityDpi) { case DENSITY_DPI_UNDEFINED: break; case 120: parts.add("ldpi"); break; case 160: parts.add("mdpi"); break; case 213: parts.add("tvdpi"); break; case 240: parts.add("hdpi"); break; case 320: parts.add("xhdpi"); break; case 480: parts.add("xxhdpi"); break; case 640: parts.add("xxxhdpi"); break; case DENSITY_DPI_ANY: parts.add("anydpi"); break; case DENSITY_DPI_NONE: parts.add("nodpi"); default: parts.add(config.densityDpi + "dpi"); break; } switch (config.touchscreen) { case Configuration.TOUCHSCREEN_NOTOUCH: parts.add("notouch"); break; case Configuration.TOUCHSCREEN_FINGER: parts.add("finger"); break; default: break; } switch (config.keyboardHidden) { case Configuration.KEYBOARDHIDDEN_NO: parts.add("keysexposed"); break; case Configuration.KEYBOARDHIDDEN_YES: parts.add("keyshidden"); break; case Configuration.KEYBOARDHIDDEN_SOFT: parts.add("keyssoft"); break; default: break; } switch (config.keyboard) { case Configuration.KEYBOARD_NOKEYS: parts.add("nokeys"); break; case Configuration.KEYBOARD_QWERTY: parts.add("qwerty"); break; case Configuration.KEYBOARD_12KEY: parts.add("12key"); break; default: break; } switch (config.navigationHidden) { case Configuration.NAVIGATIONHIDDEN_NO: parts.add("navexposed"); break; case Configuration.NAVIGATIONHIDDEN_YES: parts.add("navhidden"); break; default: break; } switch (config.navigation) { case Configuration.NAVIGATION_NONAV: parts.add("nonav"); break; case Configuration.NAVIGATION_DPAD: parts.add("dpad"); break; case Configuration.NAVIGATION_TRACKBALL: parts.add("trackball"); break; case Configuration.NAVIGATION_WHEEL: parts.add("wheel"); break; default: break; } parts.add("v" + Build.VERSION.RESOURCES_SDK_INT); return TextUtils.join("-", parts); } /** * Generate a delta Configuration between <code>base</code> and <code>change</code>. The * resulting delta can be used with {@link #updateFrom(Configuration)}. * <p /> * Caveat: If the any of the Configuration's members becomes undefined, then * {@link #updateFrom(Configuration)} will treat it as a no-op and not update that member. * * This is fine for device configurations as no member is ever undefined. * {@hide} */ public static Configuration generateDelta(Configuration base, Configuration change) { final Configuration delta = new Configuration(); if (base.fontScale != change.fontScale) { delta.fontScale = change.fontScale; } if (base.mcc != change.mcc) { delta.mcc = change.mcc; } if (base.mnc != change.mnc) { delta.mnc = change.mnc; } if ((base.locale == null && change.locale != null) || (base.locale != null && !base.locale.equals(change.locale))) { delta.locale = change.locale; } if (base.touchscreen != change.touchscreen) { delta.touchscreen = change.touchscreen; } if (base.keyboard != change.keyboard) { delta.keyboard = change.keyboard; } if (base.keyboardHidden != change.keyboardHidden) { delta.keyboardHidden = change.keyboardHidden; } if (base.navigation != change.navigation) { delta.navigation = change.navigation; } if (base.navigationHidden != change.navigationHidden) { delta.navigationHidden = change.navigationHidden; } if (base.orientation != change.orientation) { delta.orientation = change.orientation; } if ((base.screenLayout & SCREENLAYOUT_SIZE_MASK) != (change.screenLayout & SCREENLAYOUT_SIZE_MASK)) { delta.screenLayout |= change.screenLayout & SCREENLAYOUT_SIZE_MASK; } if ((base.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK) != (change.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK)) { delta.screenLayout |= change.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK; } if ((base.screenLayout & SCREENLAYOUT_LONG_MASK) != (change.screenLayout & SCREENLAYOUT_LONG_MASK)) { delta.screenLayout |= change.screenLayout & SCREENLAYOUT_LONG_MASK; } if ((base.uiMode & UI_MODE_TYPE_MASK) != (change.uiMode & UI_MODE_TYPE_MASK)) { delta.uiMode |= change.uiMode & UI_MODE_TYPE_MASK; } if ((base.uiMode & UI_MODE_NIGHT_MASK) != (change.uiMode & UI_MODE_NIGHT_MASK)) { delta.uiMode |= change.uiMode & UI_MODE_NIGHT_MASK; } if (base.screenWidthDp != change.screenWidthDp) { delta.screenWidthDp = change.screenWidthDp; } if (base.screenHeightDp != change.screenHeightDp) { delta.screenHeightDp = change.screenHeightDp; } if (base.smallestScreenWidthDp != change.smallestScreenWidthDp) { delta.smallestScreenWidthDp = change.smallestScreenWidthDp; } if (base.densityDpi != change.densityDpi) { delta.densityDpi = change.densityDpi; } return delta; } private static final String XML_ATTR_FONT_SCALE = "fs"; private static final String XML_ATTR_MCC = "mcc"; private static final String XML_ATTR_MNC = "mnc"; private static final String XML_ATTR_LOCALE = "locale"; private static final String XML_ATTR_TOUCHSCREEN = "touch"; private static final String XML_ATTR_KEYBOARD = "key"; private static final String XML_ATTR_KEYBOARD_HIDDEN = "keyHid"; private static final String XML_ATTR_HARD_KEYBOARD_HIDDEN = "hardKeyHid"; private static final String XML_ATTR_NAVIGATION = "nav"; private static final String XML_ATTR_NAVIGATION_HIDDEN = "navHid"; private static final String XML_ATTR_ORIENTATION = "ori"; private static final String XML_ATTR_SCREEN_LAYOUT = "scrLay"; private static final String XML_ATTR_UI_MODE = "ui"; private static final String XML_ATTR_SCREEN_WIDTH = "width"; private static final String XML_ATTR_SCREEN_HEIGHT = "height"; private static final String XML_ATTR_SMALLEST_WIDTH = "sw"; private static final String XML_ATTR_DENSITY = "density"; /** * Reads the attributes corresponding to Configuration member fields from the Xml parser. * The parser is expected to be on a tag which has Configuration attributes. * * @param parser The Xml parser from which to read attributes. * @param configOut The Configuration to populate from the Xml attributes. * {@hide} */ public static void readXmlAttrs(XmlPullParser parser, Configuration configOut) throws XmlPullParserException, IOException { configOut.fontScale = Float.intBitsToFloat( XmlUtils.readIntAttribute(parser, XML_ATTR_FONT_SCALE, 0)); configOut.mcc = XmlUtils.readIntAttribute(parser, XML_ATTR_MCC, 0); configOut.mnc = XmlUtils.readIntAttribute(parser, XML_ATTR_MNC, 0); final String localeStr = XmlUtils.readStringAttribute(parser, XML_ATTR_LOCALE); if (localeStr != null) { configOut.locale = Locale.forLanguageTag(localeStr); } configOut.touchscreen = XmlUtils.readIntAttribute(parser, XML_ATTR_TOUCHSCREEN, TOUCHSCREEN_UNDEFINED); configOut.keyboard = XmlUtils.readIntAttribute(parser, XML_ATTR_KEYBOARD, KEYBOARD_UNDEFINED); configOut.keyboardHidden = XmlUtils.readIntAttribute(parser, XML_ATTR_KEYBOARD_HIDDEN, KEYBOARDHIDDEN_UNDEFINED); configOut.hardKeyboardHidden = XmlUtils.readIntAttribute(parser, XML_ATTR_HARD_KEYBOARD_HIDDEN, HARDKEYBOARDHIDDEN_UNDEFINED); configOut.navigation = XmlUtils.readIntAttribute(parser, XML_ATTR_NAVIGATION, NAVIGATION_UNDEFINED); configOut.navigationHidden = XmlUtils.readIntAttribute(parser, XML_ATTR_NAVIGATION_HIDDEN, NAVIGATIONHIDDEN_UNDEFINED); configOut.orientation = XmlUtils.readIntAttribute(parser, XML_ATTR_ORIENTATION, ORIENTATION_UNDEFINED); configOut.screenLayout = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_LAYOUT, SCREENLAYOUT_UNDEFINED); configOut.uiMode = XmlUtils.readIntAttribute(parser, XML_ATTR_UI_MODE, 0); configOut.screenWidthDp = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_WIDTH, SCREEN_WIDTH_DP_UNDEFINED); configOut.screenHeightDp = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_HEIGHT, SCREEN_HEIGHT_DP_UNDEFINED); configOut.smallestScreenWidthDp = XmlUtils.readIntAttribute(parser, XML_ATTR_SMALLEST_WIDTH, SMALLEST_SCREEN_WIDTH_DP_UNDEFINED); configOut.densityDpi = XmlUtils.readIntAttribute(parser, XML_ATTR_DENSITY, DENSITY_DPI_UNDEFINED); } /** * Writes the Configuration's member fields as attributes into the XmlSerializer. * The serializer is expected to have already started a tag so that attributes can be * immediately written. * * @param xml The serializer to which to write the attributes. * @param config The Configuration whose member fields to write. * {@hide} */ public static void writeXmlAttrs(XmlSerializer xml, Configuration config) throws IOException { XmlUtils.writeIntAttribute(xml, XML_ATTR_FONT_SCALE, Float.floatToIntBits(config.fontScale)); if (config.mcc != 0) { XmlUtils.writeIntAttribute(xml, XML_ATTR_MCC, config.mcc); } if (config.mnc != 0) { XmlUtils.writeIntAttribute(xml, XML_ATTR_MNC, config.mnc); } if (config.locale != null) { XmlUtils.writeStringAttribute(xml, XML_ATTR_LOCALE, config.locale.toLanguageTag()); } if (config.touchscreen != TOUCHSCREEN_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_TOUCHSCREEN, config.touchscreen); } if (config.keyboard != KEYBOARD_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_KEYBOARD, config.keyboard); } if (config.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_KEYBOARD_HIDDEN, config.keyboardHidden); } if (config.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_HARD_KEYBOARD_HIDDEN, config.hardKeyboardHidden); } if (config.navigation != NAVIGATION_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_NAVIGATION, config.navigation); } if (config.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_NAVIGATION_HIDDEN, config.navigationHidden); } if (config.orientation != ORIENTATION_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_ORIENTATION, config.orientation); } if (config.screenLayout != SCREENLAYOUT_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_LAYOUT, config.screenLayout); } if (config.uiMode != 0) { XmlUtils.writeIntAttribute(xml, XML_ATTR_UI_MODE, config.uiMode); } if (config.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_WIDTH, config.screenWidthDp); } if (config.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_HEIGHT, config.screenHeightDp); } if (config.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_SMALLEST_WIDTH, config.smallestScreenWidthDp); } if (config.densityDpi != DENSITY_DPI_UNDEFINED) { XmlUtils.writeIntAttribute(xml, XML_ATTR_DENSITY, config.densityDpi); } } }
以上是关于关于android屏幕适配的问题（drawable-xxxxxxxx，dp，sp，px等等），偶尔看到了android源代码，关于dpi的区分的值的主要内容，如果未能解决你的问题，请参考以下文章
浅谈屏幕适配 dp dip sp dpi ppi px sp