使用 xamarin 表单删除 Android 上的顶部栏
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【中文标题】使用 xamarin 表单删除 Android 上的顶部栏【英文标题】:remove top bar on Android with xamarin forms 【发布时间】:2017-06-11 17:08:43 【问题描述】:我尝试了几种解决方案,包括:
<item name="android:actionBarSize">0dp</item>
或
var activity = (Activity)Forms.Context;
this.Window.AddFlags(WindowManagerFlags.Fullscreen);
或
RequestWindowFeature(WindowFeatures.NoTitle);
或在活动字符串中
Theme = "@style/MainTheme.FullScreen"
但我找不到任何可行的解决方案,或者更确切地说,删除了歌词、电池时间等,但我仍然保持顶部栏不变,我怎样才能完全删除它?
在我添加的 iO 上:
UIApplication.SharedApplication.SetStatusBarHidden(true, true);
并且可以工作...但是 android 他让我该死 :) 解决方案?
我使用 xamarin 表单 pcl
我的样式.xaml
<?xml version="1.0" encoding="utf-8" ?>
<resources>
<style name="MainTheme" parent="MainTheme.Base">
</style>
<!-- Base theme applied no matter what API -->
<style name="MainTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
<!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
<item name="windowNoTitle">true</item>
<!--We will be using the toolbar so no need to show ActionBar-->
<item name="windowActionBar">false</item>
<!-- Set theme colors from http://www.google.com/design/spec/style/color.html#color-color-palette -->
<!-- colorPrimary is used for the default action bar background -->
<item name="colorPrimary">#2196F3</item>
<!-- colorPrimaryDark is used for the status bar -->
<!--<item name="colorPrimaryDark">#0084CA</item>-->
<!-- colorAccent is used as the default value for colorControlActivated
which is used to tint widgets -->
<item name="colorAccent">#2196F3</item>
<!-- You can also set colorControlNormal, colorControlActivated
colorControlHighlight and colorSwitchThumbNormal. -->
<item name="windowActionModeOverlay">true</item>
<!-- default -->
<item name="android:buttonStyle">@style/NoShadowButton</item>
<item name="android:datePickerDialogTheme">@style/AppCompatDialogStyle</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
</style>
<style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
<item name="colorAccent">#2196F3</item>
</style>
<style name="NoShadowButton" parent="android:style/Widget.Button">
<item name="android:stateListAnimator">@null</item>
</style>
</resources>
【问题讨论】:
您是否尝试将其添加到您的活动中?[Activity (Label = "@string/app_name", MainLauncher = true, Theme = "@android:style/Theme.Black.NoTitleBar.Fullscreen")]
是但不起作用,顶栏没有隐藏
【参考方案1】:
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
protected override void OnCreate(Bundle bundle)
this.Window.AddFlags(WindowManagerFlags.Fullscreen | WindowManagerFlags.TurnScreenOn);
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
var stBarHeight = typeof(FormsAppCompatActivity).GetField("statusBarHeight", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
if (stBarHeight == null)
stBarHeight = typeof(FormsAppCompatActivity).GetField("_statusBarHeight", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
stBarHeight?.SetValue(this, 0);
base.OnCreate(bundle);
global::Xamarin.Forms.Forms.Init(this, bundle);
LoadApplication(new App());
【讨论】:
你绝对应该包含一些关于你的代码是做什么的描述。【参考方案2】: if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
Window.AddFlags(WindowManagerFlags.TranslucentStatus);
return;
仅此一项并没有将视图置于状态栏下方,而是消除了状态栏下方的黑色空间(高度为 20px 左右)。
【讨论】:
【参考方案3】:我在 Xamarin 论坛中回答了这个类似的问题:
将这两项添加到您给定活动的主题中:
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
https://forums.xamarin.com/discussion/comment/248555
编辑:为了让您更轻松,请将您的样式更改为 -
<resources>
<style name="MainTheme.FullScreen" parent="MainTheme.Base">
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
</style>
<style name="MainTheme" parent="MainTheme.Base">
</style>
<!-- Base theme applied no matter what API -->
<style name="MainTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
<!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
<!--We will be using the toolbar so no need to show ActionBar-->
<item name="windowActionBar">false</item>
<!-- Set theme colors from http://www.google.com/design/spec/style/color.html#color-color-palette -->
<!-- colorPrimary is used for the default action bar background -->
<item name="colorPrimary">#2196F3</item>
<!-- colorPrimaryDark is used for the status bar -->
<!--<item name="colorPrimaryDark">#0084CA</item>-->
<!-- colorAccent is used as the default value for colorControlActivated
which is used to tint widgets -->
<item name="colorAccent">#2196F3</item>
<!-- You can also set colorControlNormal, colorControlActivated
colorControlHighlight and colorSwitchThumbNormal. -->
<item name="windowActionModeOverlay">true</item>
<!-- default -->
<item name="android:buttonStyle">@style/NoShadowButton</item>
<item name="android:datePickerDialogTheme">@style/AppCompatDialogStyle</item>
</style>
<style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
<item name="colorAccent">#2196F3</item>
</style>
<style name="NoShadowButton" parent="android:style/Widget.Button">
<item name="android:stateListAnimator">@null</item>
</style>
</resources>
【讨论】:
这是官方的做法。我们的主题肯定有别的东西搞砸了。你能在你的styles.xml中添加你的完整主题吗? 也许我没有添加官方主题?我如何检查是否添加主题? 你能粘贴你的styles.xml中的内容吗? 什么?我只想看看你的styles.xml。打开你的styles.xml,Ctrl+a,Ctrl+c,回到这里,添加注释,Ctrl+v,回车 找不到与给定名称匹配的资源:attr 'windowFullscreen'。如何添加?抱歉,我是 xamarin 的初学者 :(【参考方案4】:在我的情况下,它适用于:
<?xml version="1.0" encoding="utf-8" ?>
<resources>
<style name="MainTheme" parent="MainTheme.Base">
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
</style>
<!-- Base theme applied no matter what API -->
<style name="MainTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
<!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
<item name="windowNoTitle">true</item>
<!--We will be using the toolbar so no need to show ActionBar-->
<item name="windowActionBar">false</item>
<!-- Set theme colors from http://www.google.com/design/spec/style/color.html#color-color-palette -->
<!-- colorPrimary is used for the default action bar background -->
<item name="colorPrimary">#2196F3</item>
<!-- colorPrimaryDark is used for the status bar -->
<item name="colorPrimaryDark">#1976D2</item>
<!-- colorAccent is used as the default value for colorControlActivated
which is used to tint widgets -->
<item name="colorAccent">#FF4081</item>
<!-- You can also set colorControlNormal, colorControlActivated
colorControlHighlight and colorSwitchThumbNormal. -->
<item name="windowActionModeOverlay">true</item>
<item name="android:datePickerDialogTheme">@style/AppCompatDialogStyle</item>
</style>
<style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
<item name="colorAccent">#FF4081</item>
</style>
</resources>
【讨论】:
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