java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

nikitaog.me | 8 months ago
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Root Cause Analysis

  1. java.lang.RuntimeException

    Can't create handler inside thread that has not called Looper.prepare()

    at android.os.Handler.<init>()
  2. Android Platform
    Toast.makeText
    1. android.os.Handler.<init>(Handler.java:121)
    2. android.widget.Toast$TN.<init>(Toast.java:322)
    3. android.widget.Toast.<init>(Toast.java:91)
    4. android.widget.Toast.makeText(Toast.java:238)
    4 frames
  3. com.example.testapp
    MyActivity$MyAsyncTask.doInBackground
    1. com.example.testapp.MyActivity$MyAsyncTask.doInBackground(MyActivity.java:25)
    2. com.example.testapp.MyActivity$MyAsyncTask.doInBackground(MyActivity.java:21)
    2 frames