java.lang.RuntimeException

An error occurred while executing doInBackground()

Samebug tips1

Any worker thread runs in background, since it is not intended to loop, is not connected to a Looper.for example doInBackground(). its implementation returns will be passed to onPostExecute() which runs on the UI thread.

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Solutions on the web18699

  • via GitHub by lanceschi
    , 1 year ago
    An error occurred while executing doInBackground()
  • via GitHub by billmeek
    , 5 months ago
    An error occurred while executing doInBackground()
  • via GitHub by viperfx
    , 1 year ago
    An error occurred while executing doInBackground()
  • Stack trace

    • java.lang.RuntimeException: An error occurred while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:318) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354) at java.util.concurrent.FutureTask.setException(FutureTask.java:223) at java.util.concurrent.FutureTask.run(FutureTask.java:242) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) at java.lang.Thread.run(Thread.java:761) Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() at android.os.Handler.<init>(Handler.java:200) at android.os.Handler.<init>(Handler.java:114) at android.widget.Toast$TN.<init>(Toast.java:346) at android.widget.Toast.<init>(Toast.java:101) at android.widget.Toast.makeText(Toast.java:260) at com.firefluxentertainment.retroclicker.SplashActivity$DownloadTask.doInBackground(SplashActivity.java:155) at com.firefluxentertainment.retroclicker.SplashActivity$DownloadTask.doInBackground(SplashActivity.java:119) at android.os.AsyncTask$2.call(AsyncTask.java:304) at java.util.concurrent.FutureTask.run(FutureTask.java:237)

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