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    via vogella.com by Unknown author

    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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via GitHub by srvrguy
, 1 year ago
An error occured while executing doInBackground()
via GitHub by guimellon
, 1 year ago
An error occured while executing doInBackground()
via GitHub by volcano99
, 1 year ago
An error occured while executing doInBackground()
via GitHub by atulagrwl
, 2 years ago
An error occured while executing doInBackground()
via GitHub by atulagrwl
, 2 years ago
An error occured while executing doInBackground()
via GitHub by justincpollard
, 8 months ago
An error occured while executing doInBackground()
java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()	at android.os.Handler.(Handler.java:121)	at android.widget.Toast$TN.(Toast.java:361)	at android.widget.Toast.(Toast.java:97)	at android.widget.Toast.makeText(Toast.java:254)	at android.widget.Toast.makeText(Toast.java:304)	at com.nextgis.maplibui.util.LayerUtil$ExportGeoJSONTask.doInBackground(LayerUtil.java:208)	at com.nextgis.maplibui.util.LayerUtil$ExportGeoJSONTask.doInBackground(LayerUtil.java:113)	at android.os.AsyncTask$2.call(AsyncTask.java:287)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)	at java.util.concurrent.FutureTask.run(FutureTask.java:137)	at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)	at java.lang.Thread.run(Thread.java:856)