java.lang.RuntimeException: An error occurred while executing doInBackground()

Stack Overflow | user2880972 | 4 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:200)
    2. android.os.Handler.<init>(Handler.java:114)
    3. android.widget.Toast$TN.<init>(Toast.java:345)
    4. android.widget.Toast.<init>(Toast.java:101)
    5. android.widget.Toast.makeText(Toast.java:259)
    5 frames
  3. com.it.legalapps
    CalendarFragment$ApiSimulator.doInBackground
    1. com.it.legalapps.proviser.CalendarFragment$ApiSimulator.doInBackground(CalendarFragment.java:315)
    2. com.it.legalapps.proviser.CalendarFragment$ApiSimulator.doInBackground(CalendarFragment.java:291)
    2 frames
  4. Android Platform
    AsyncTask$2.call
    1. android.os.AsyncTask$2.call(AsyncTask.java:295)
    1 frame
  5. Java RT
    Thread.run
    1. java.util.concurrent.FutureTask.run(FutureTask.java:237)
    2. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
    3. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
    4. java.lang.Thread.run(Thread.java:818)
    4 frames