u3d NFC Flash back

Every time after identification, will flash back；；

================

 void Update()
 {
     try
     {
         AndroidJavaObject mActivity = new AndroidJavaClass("com.unity3d.player.UnityPlayer").GetStatic<AndroidJavaObject>("currentActivity");

         AndroidJavaObject mIntent = mActivity.Call<AndroidJavaObject>("getIntent");

         AndroidJavaObject[] mNdefMessage = mIntent.Call<AndroidJavaObject[]>("getParcelableArrayExtra", "android.nfc.extra.NDEF_MESSAGES");

         text = mNdefMessage == null ? "fuck" : "ok";


         if (mNdefMessage != null)
         {
             AndroidJavaObject[] mNdefRecord = mNdefMessage[0].Call<AndroidJavaObject[]>("getRecords");

             byte[] payLoad = mNdefRecord[0].Call<byte[]>("getPayload");

             text1 = System.Text.Encoding.UTF8.GetString(payLoad);

             Debug.Log("---->" + text);

         }
     }

     catch (Exception ex)
     {
         text1 = ex.Message;
     }


 }

============================= XML

AndroidManifest.xml

=============