固定Drawable大小

获取应用图标直接使用，有些会撑破布局，需要固定大小。

https://blog.51cto.com/u_16213367/8811342

BitmapDrawable 可以强制转换，其他类型Drawable需要重绘。

AdaptiveIconDrawable cannot be cast to BitmapDrawable

https://blog.csdn.net/u011905115/article/details/96434062

NinePatchDrawable cannot be cast to BitmapDrawable

https://blog.csdn.net/Kitty_Landon/article/details/49493717

Drawable icon = packageInfo.applicationInfo.loadIcon(PM);
AppInfo appInfo = new AppInfo();
appInfo.setAppIcon(resizeDrawable(getApplicationContext(), icon, 200, 200));Drawable resizeDrawable(Context context, Drawable drawable, int newWidth, int newHeight) {// 将Drawable转换为Bitmap    Bitmap bitmap;if (drawable instanceof BitmapDrawable) {bitmap = ((BitmapDrawable) drawable).getBitmap();} else {bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);Canvas canvas = new Canvas(bitmap);drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());drawable.draw(canvas);}// 缩放BitmapBitmap resizedBitmap = Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, false);// 将Bitmap转换为Drawablereturn new BitmapDrawable(context.getResources(), resizedBitmap);
}