无需Root,无需反编译,用VirtualUETool查看修改任意App的布局参数
Posted zhangke3016
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UETool是饿了么推出一款开源库,已经出来一段时间了,用来帮助设计师,程序员,测试人员来在APP上修改View的各项参数。使用起来也很方便,但它只能在自己项目里引入依赖来使用,也就是说用它只能查看自己APP的布局位置信息。如果可以用它来查看手机上安装的任意APP,那是不是很酷呢?我们今天的目标就是:扩展UETool让它成为一个SuperUETool。先说下我们超级工具**VirtualUETool**,无需修改其他应用apk,无需反编译apk,无需手机Root,即拿即用,在Github已开源,欢迎star、fork哈~说了这么多,我们先看下效果吧:
接下来,我们来聊聊实现思路以及实现过程中遇到的问题,重点在于思路和想法的扩展,希望给你也有新的启发。
先说下本文的行文思路:
一、UETool工作原理梳理
二、VirtualUETool框架的实现思路梳理
我们这里的介绍重点在于UETool以及对其的改造,对VirtualApp实现插件化功能就不做过多阐述了哈
好了,那我们开始吧。
一、UETool工作原理梳理
UETool
的基本使用就不说了,看下官方文档就很清楚了,基本使用在当前页面调用下UETool.showUETMenu
这个方法就可以了。既然我们要开始改造UETool
,
那我们接下来的重点就聊聊这个东西它的内部实现是什么样的,也方便我们后续的修改嘛。
首先从UETool.showUETMenu
往下看
UETool.showMenu
private boolean showMenu(int y)
//检查开启悬浮窗权限
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
if (!Settings.canDrawOverlays(Application.getApplicationContext()))
requestPermission(Application.getApplicationContext());
Toast.makeText(Application.getApplicationContext(), "After grant this permission, re-enable UETool", Toast.LENGTH_LONG).show();
return false;
//启动UETool悬浮窗
if (uetMenu == null)
uetMenu = new UETMenu(Application.getApplicationContext(), y);
uetMenu.show();
return true;
这里主要是申请悬浮窗权限,就不说了。后面下看UETMenu
的构造方法,这个UETMenu
是一个继承了LinearLayout
的普通布局控件,构造方法中主要是初始化UI相关,看下关键部分:
UETMenu
构造方法中
public class UETMenu extends LinearLayout
...
subMenus.add(new UETSubMenu.SubMenu(resources.getString(R.string.uet_catch_view), R.drawable.uet_edit_attr, new OnClickListener()
@Override
public void onClick(View v)
//查看view属性
open(TransparentActivity.Type.TYPE_EDIT_ATTR);
));
subMenus.add(new UETSubMenu.SubMenu(resources.getString(R.string.uet_relative_location), R.drawable.uet_relative_position,
new OnClickListener()
@Override
public void onClick(View v)
//查看view布局位置
open(TransparentActivity.Type.TYPE_RELATIVE_POSITION);
));
subMenus.add(new UETSubMenu.SubMenu(resources.getString(R.string.uet_grid), R.drawable.uet_show_gridding,
new OnClickListener()
@Override
public void onClick(View v)
//显示网格栅栏,方便查看控件是否对齐
open(TransparentActivity.Type.TYPE_SHOW_GRIDDING);
));
...
这里添加进悬浮窗点击展开的三部分,分别是查看view属性、查看view布局位置、显示网格栅栏这三个部分。OK,继续往下,就到了uetMenu.show()
这里,
public void show()
try
windowManager.addView(this, getWindowLayoutParams());
catch (Exception e)
e.printStackTrace();
就是往WindowManager
中添加了UETMenu
这个ViewGroup
。接下来我们关注的重点来了,当点击各个功能按钮后统一都调用了open
方法,往下走。
private void open(@TransparentActivity.Type int type)
Activity currentTopActivity = Util.getCurrentActivity();
if (currentTopActivity == null)
return;
else if (currentTopActivity.getClass() == TransparentActivity.class)
currentTopActivity.finish();
return;
//启动透明activity
Intent intent = new Intent(currentTopActivity, TransparentActivity.class);
intent.putExtra(TransparentActivity.EXTRA_TYPE, type);
currentTopActivity.startActivity(intent);
currentTopActivity.overridePendingTransition(0, 0);
UETool.getInstance().setTargetActivity(currentTopActivity);
这里启动了一个透明的Activity
,用于显示我们显示绘制布局信息和响应我们的手指点击,看重点
TransparentActivity.java
switch (type)
case TYPE_EDIT_ATTR:
EditAttrLayout editAttrLayout = new EditAttrLayout(this);
editAttrLayout.setOnDragListener(new EditAttrLayout.OnDragListener()
@Override
public void showOffset(String offsetContent)
board.updateInfo(offsetContent);
);
vContainer.addView(editAttrLayout);
break;
case TYPE_RELATIVE_POSITION:
vContainer.addView(new RelativePositionLayout(this));
break;
case TYPE_SHOW_GRIDDING:
vContainer.addView(new GriddingLayout(this));
board.updateInfo("LINE_INTERVAL: " + DimenUtil.px2dip(GriddingLayout.LINE_INTERVAL, true));
break;
default:
Toast.makeText(this, getString(R.string.uet_coming_soon), Toast.LENGTH_SHORT).show();
finish();
break;
这里我们看到不同的功能在界面添加了不同的Layout
,那接下来就分别分析下咯。
EditAttrLayout
和RelativePositionLayout
都继承自CollectViewsLayout
,先来看下它们的爸爸~
@Override
protected void onAttachedToWindow()
super.onAttachedToWindow();
try
Activity targetActivity = UETool.getInstance().getTargetActivity();
WindowManager windowManager = targetActivity.getWindowManager();
Field mGlobalField = Class.forName("android.view.WindowManagerImpl").getDeclaredField("mGlobal");
mGlobalField.setAccessible(true);
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M)
Field mViewsField = Class.forName("android.view.WindowManagerGlobal").getDeclaredField("mViews");
mViewsField.setAccessible(true);
List<View> views = (List<View>) mViewsField.get(mGlobalField.get(windowManager));
for (int i = views.size() - 1; i >= 0; i--)
View targetView = getTargetDecorView(targetActivity, views.get(i));
if (targetView != null)
//获取当前显示的view
traverse(targetView);
break;
else
Field mRootsField = Class.forName("android.view.WindowManagerGlobal").getDeclaredField("mRoots");
mRootsField.setAccessible(true);
List viewRootImpls;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
viewRootImpls = (List) mRootsField.get(mGlobalField.get(windowManager));
else
viewRootImpls = Arrays.asList((Object[]) mRootsField.get(mGlobalField.get(windowManager)));
for (int i = viewRootImpls.size() - 1; i >= 0; i--)
Class clazz = Class.forName("android.view.ViewRootImpl");
Object object = viewRootImpls.get(i);
Field mWindowAttributesField = clazz.getDeclaredField("mWindowAttributes");
mWindowAttributesField.setAccessible(true);
Field mViewField = clazz.getDeclaredField("mView");
mViewField.setAccessible(true);
View decorView = (View) mViewField.get(object);
WindowManager.LayoutParams layoutParams = (WindowManager.LayoutParams) mWindowAttributesField.get(object);
if (layoutParams.getTitle().toString().contains(targetActivity.getClass().getName())
|| getTargetDecorView(targetActivity, decorView) != null)
traverse(decorView);
break;
catch (Exception e)
e.printStackTrace();
//递归遍历界面所有view并添加进elements集合中
private void traverse(View view)
//如果在过滤的列表中,忽略
if (UETool.getInstance().getFilterClasses().contains(view.getClass().getName())) return;
//如果View不显示 忽略
if (view.getAlpha() == 0 || view.getVisibility() != View.VISIBLE) return;
//如果view tag == DESABLE_UETOOL 忽略
if (getResources().getString(R.string.uet_disable).equals(view.getTag())) return;
elements.add(new Element(view));
if (view instanceof ViewGroup)
ViewGroup parent = (ViewGroup) view;
for (int i = 0; i < parent.getChildCount(); i++)
traverse(parent.getChildAt(i));
在onAttachedToWindow
方法中查找到当前界面显示的View并且递归遍历子View,添加至elements
集合中,每个Element
中保存由当前View的位置信息和其父级Element
。
继续看EditAttrLayout
,这个控件用于显示当前View属性内容,主要看下这里:
//当点击某个控件位置时 会调用 triggerActionUp
class ShowMode implements IMode
@Override
public void triggerActionUp(final MotionEvent event)
final Element element = getTargetElement(event.getX(), event.getY());
if (element != null)
targetElement = element;
invalidate();
if (dialog == null)
dialog = new AttrsDialog(getContext());
dialog.setAttrDialogCallback(new AttrsDialog.AttrDialogCallback()
@Override
public void enableMove()
mode = new MoveMode();
dialog.dismiss();
@Override
public void showValidViews(int position, boolean isChecked)
int positionStart = position + 1;
if (isChecked)
dialog.notifyValidViewItemInserted(positionStart, getTargetElements(lastX, lastY), targetElement);
else
dialog.notifyItemRangeRemoved(positionStart);
@Override
public void selectView(Element element)
targetElement = element;
dialog.dismiss();
dialog.show(targetElement);
);
dialog.setOnDismissListener(new DialogInterface.OnDismissListener()
@Override
public void onDismiss(DialogInterface dialog)
if (targetElement != null)
targetElement.reset();
invalidate();
);
dialog.show(targetElement);
//当移动某个控件位置时 会调用 triggerActionMove 方法
class MoveMode implements IMode
@Override
public void triggerActionMove(MotionEvent event)
if (targetElement != null)
boolean changed = false;
View view = targetElement.getView();
float diffX = event.getX() - lastX;
if (Math.abs(diffX) >= moveUnit)
view.setTranslationX(view.getTranslationX() + diffX);
lastX = event.getX();
changed = true;
float diffY = event.getY() - lastY;
if (Math.abs(diffY) >= moveUnit)
view.setTranslationY(view.getTranslationY() + diffY);
lastY = event.getY();
changed = true;
if (changed)
targetElement.reset();
invalidate();
这里抽象出公共的行为,不同行为操作单独处理实现,代码很简洁。从上面可以看到,在点击控件的时候,有一个AttrsDialog
弹窗显示,也就是我们看到的显示控件实现的dialog,瞅瞅瞅瞅~
重点看下列表的adapter实现:
public void notifyDataSetChanged(Element element)
items.clear();
for (String attrsProvider : UETool.getInstance().getAttrsProvider())
try
IAttrs attrs = (IAttrs) Class.forName(attrsProvider).newInstance();
items.addAll(attrs.getAttrs(element));
catch (Exception e)
e.printStackTrace();
notifyDataSetChanged();
当adapter的notifyDataSetChanged
方法执行时,会从UETool.getInstance().getAttrsProvider()
这里来拿我们希望支持的属性,框架默认支持了一部分基础属性,我们也可以通过
UETool.putAttrsProviderClass(String customizeClassName)
来添加自定义支持的属性。先看下默认支持的怎么处理的:
private Set<String> attrsProviderSet = new LinkedHashSet<String>()
add(UETCore.class.getName());
;
UETCore.java
@Override
public List<Item> getAttrs(Element element)
List<Item> items = new ArrayList<>();
View view = element.getView();
items.add(new SwitchItem("Move", element, SwitchItem.Type.TYPE_MOVE));
items.add(new SwitchItem("ValidViews", element, SwitchItem.Type.TYPE_SHOW_VALID_VIEWS));
IAttrs iAttrs = AttrsManager.createAttrs(view);
if (iAttrs != null)
items.addAll(iAttrs.getAttrs(element));
items.add(new TitleItem("COMMON"));
items.add(new TextItem("Class", view.getClass().getName()));
items.add(new TextItem("Id", Util.getResId(view)));
items.add(new TextItem("ResName", Util.getResourceName(view.getId())));
items.add(new TextItem("Clickable", Boolean.toString(view.isClickable()).toUpperCase()));
items.add(new TextItem("Focused", Boolean.toString(view.isFocused以上是关于无需Root,无需反编译,用VirtualUETool查看修改任意App的布局参数的主要内容,如果未能解决你的问题,请参考以下文章