android 获取最顶层window
时间: 2023-08-15 18:19:33 浏览: 90
你可以通过以下代码获取当前最顶层的Window对象:
```java
WindowManager wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
Window topWindow = null;
if (wm != null) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
topWindow = wm.getCurrentWindowMetrics().getWindow();
} else {
List<WindowManager.LayoutParams> paramsList = new ArrayList<>();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics()); // 重复获取多次,确保获取到最顶层的Window
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
wm.getDefaultDisplay().getRealMetrics(new DisplayMetrics());
for (WindowManager.LayoutParams params : wm.getDefaultDisplay().getRealSize().getWindowLayoutInDisplayCutout().getMaxSizeParams()) {
paramsList.add(params);
}
} else {
for (int i = 0; i < wm.getDefaultDisplay().getWidth(); i += 10) {
for (int j = 0; j < wm.getDefaultDisplay().getHeight(); j += 10) {
View view = new View(this);
WindowManager.LayoutParams params = new WindowManager.LayoutParams();
params.width = 10;
params.height = 10;
params.x = i;
params.y = j;
params.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
params.format = PixelFormat.TRANSLUCENT;
wm.addView(view, params);
paramsList.add(params);
}
}
}
if (!paramsList.isEmpty()) {
Collections.sort(paramsList, new Comparator<WindowManager.LayoutParams>() {
@Override
public int compare(WindowManager.LayoutParams o1, WindowManager.LayoutParams o2) {
return o1.token == null ? -1 : (o2.token == null ? 1 : Integer.compare(o1.token.hashCode(), o2.token.hashCode()));
}
});
WindowManager.LayoutParams topParams = paramsList.get(paramsList.size() - 1);
topWindow = new PhoneWindow(this);
topWindow.setAttributes(topParams);
}
}
}
```
需要注意的是,该方法在 Android 11 及以上版本中使用 `WindowManager#getCurrentWindowMetrics()` 获取最顶层的Window对象,而在 Android 10 及以下版本中则使用遍历所有Window的方式获取最顶层的Window对象,这种方式可能会导致性能问题。因此,建议在 Android 11 及以上版本中使用 `WindowManager#getCurrentWindowMetrics()` 获取最顶层的Window对象。