android6.0悬浮窗权限问题（eg:魅族）

// 判断悬浮窗权限是否存在
public static boolean getAppOps(Context context) {
try {
Object object = context.getSystemService("appops");
if (object == null) {
return false;
}
Class localClass = object.getClass();
Class[] arrayOfClass = new Class[3];
arrayOfClass[0] = Integer.TYPE;
arrayOfClass[1] = Integer.TYPE;
arrayOfClass[2] = String.class;
Method method = localClass.getMethod("checkOp", arrayOfClass);
if (method == null) {
return false;
}
Object[] arrayOfObject1 = new Object[3];
arrayOfObject1[0] = Integer.valueOf(24);
arrayOfObject1[1] = Integer.valueOf(Binder.getCallingUid());
arrayOfObject1[2] = context.getPackageName();
int m = ((Integer) method.invoke(object, arrayOfObject1)).intValue();
return m == AppOpsManager.MODE_ALLOWED;
} catch (Exception ex) {
}
return false;
}

//跳转到设置界面
Toast.makeText(NEVideoPlayerActivity.this, "请开启悬浮窗权限", 0).show();
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (Build.VERSION.SDK_INT >= 9) {
intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
intent.setData(Uri.fromParts("package", getPackageName(), null));
} else if (Build.VERSION.SDK_INT <= 8) {
intent.setAction(Intent.ACTION_VIEW);
intent.setClassName("com.android.settings", "com.android.settings.InstalledAppDetails");
intent.putExtra("com.android.settings.ApplicationPkgName", getPackageName());
}
startActivity(intent);