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

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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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    • java.lang.RuntimeException: An error occurred while executing doInBackground() at android.os.AsyncTask$3.done( at java.util.concurrent.FutureTask.finishCompletion( at java.util.concurrent.FutureTask.setException( at at android.os.AsyncTask$SerialExecutor$ at java.util.concurrent.ThreadPoolExecutor.runWorker( at java.util.concurrent.ThreadPoolExecutor$ at Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() at android.os.Handler.<init>( at android.os.Handler.<init>( at<init>( at it.rockopera.SCSremote.TcpClient.<init>( at it.rockopera.SCSremote.ClientActivity$ConnectTask.doInBackground( at it.rockopera.SCSremote.ClientActivity$ConnectTask.doInBackground( at android.os.AsyncTask$ at ... 4 more

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