把这个用在DecorView上就是截图
/**
* 获取一个 View 的缓存视图
*
* @param view
* @return
*/
private Bitmap getCacheBitmapFromView(View view) {
final boolean drawingCacheEnabled = true;
view.setDrawingCacheEnabled(drawingCacheEnabled);
view.buildDrawingCache(drawingCacheEnabled);
final Bitmap drawingCache = view.getDrawingCache();
Bitmap bitmap;
if (drawingCache != null) {
bitmap = Bitmap.createBitmap(drawingCache);
view.setDrawingCacheEnabled(false);
} else {
bitmap = null;
}
return bitmap;
}
}
