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via Stack Overflow by David Barishev
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Can't create handler inside thread that has not called Looper.prepare()
java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()	at android.os.Handler.(Handler.java:197)	at android.os.Handler.(Handler.java:111)	at android.app.Dialog.(Dialog.java:111)	at android.app.AlertDialog.(AlertDialog.java:114)	at android.app.AlertDialog$Builder.create(AlertDialog.java:931)	at ir.blog.trafik.BackGround.onPreExecute(BackGround.java:88)	at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)	at android.os.AsyncTask.execute(AsyncTask.java:534)	at ir.blog.trafik.locationService.json_maker(locationService.java:538)	at ir.blog.trafik.locationService$1.run(locationService.java:588)	at java.util.Timer$TimerImpl.run(Timer.java:284)