[ Android Studio ] 判斷懸浮窗 (浮動物件)權限是否開起

懸浮窗權限
<uses-permission android:name="android.permission.ACTION_MANAGE_OVERLAY_PERMISSION" />

語法為Settings.ACTION_MANAGE_OVERLAY_PERMISSION

以下內容：
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
   if (!Settings.canDrawOverlays(getApplicationContext())) { //進行所有權限判斷
     
     Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
     intent.setData(Uri.parse("package:" + getPackageName()));
     startActivityForResult(intent, 100);//100為開起權限
   }
}