Caused by: java.lang.ClassCastException: android.graphics.drawable.AdaptiveIconDrawable cannot be cast to android.graphics.drawable.BitmapDrawable

出現原因是因為應用適配了API 26的自適配圖標adaptive-icon，使用下面的方法讀取icon，讀取到應用的默認的ICON圖標是個adaptive-icon 類型，所以造成了強轉出錯

問題代碼：

Bitmap?icon = ((BitmapDrawable) activity.getApplicationInfo().loadIcon(activity.getPackageManager())).getBitmap();

解決方案：

Bitmap icon =?getIconBitmap(activity);

public static Bitmap getIconBitmap(Activity activity) {

try {

//Drawable icon = ContextCompat.getDrawable(context, iconId);

? ? ? ? Drawable icon = activity.getApplicationInfo().loadIcon(activity.getPackageManager());

? ? ? ? if (icon ==null) {

return null;

? ? ? ? }

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && iconinstanceof android.graphics.drawable.AdaptiveIconDrawable) {

Bitmap bitmap = Bitmap.createBitmap(icon.getIntrinsicWidth(), icon.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);

? ? ? ? ? ? Canvas canvas =new Canvas(bitmap);

? ? ? ? ? ? icon.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());

? ? ? ? ? ? icon.draw(canvas);

? ? ? ? ? ? return bitmap;

? ? ? ? }else {

return ((BitmapDrawable) icon).getBitmap();

? ? ? ? }

}catch (Exception e) {

return null;

? ? }

}