Registering Succeed

With error:
==================================
02-03 12:14:29.357: E/entitasbalasan(8791):
org.apache.http.conn.BasicManagedEntity@40d42820
02-03 12:14:29.357: E/aaaaaaaaaaaaaa(8791): 201
02-03 12:14:29.357: E/asynccccc(8791):
{"user":{"email":"esqdzn@gmail.com","password":"Ratatul1","accept_tos":true}}
02-03 12:14:29.427: E/AndroidRuntime(8791): FATAL EXCEPTION: AsyncTask
#1
02-03 12:14:29.427: E/AndroidRuntime(8791): java.lang.RuntimeException:
An error occured while executing doInBackground()
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.os.AsyncTask$3.done(AsyncTask.java:299)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
java.util.concurrent.FutureTask.setException(FutureTask.java:219)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
java.util.concurrent.FutureTask.run(FutureTask.java:239)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
java.lang.Thread.run(Thread.java:856)
02-03 12:14:29.427: E/AndroidRuntime(8791): Caused by:
java.lang.RuntimeException: Can't create handler inside thread that has
not called Looper.prepare()
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.os.Handler.<init>(Handler.java:197)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.os.Handler.<init>(Handler.java:111)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.app.Dialog.<init>(Dialog.java:107)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.app.AlertDialog.<init>(AlertDialog.java:114)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.app.AlertDialog$Builder.create(AlertDialog.java:931)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.app.AlertDialog$Builder.show(AlertDialog.java:950)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
com.anansi.interactive.cloudupp.Daftar.alertbox(Daftar.java:162)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
com.anansi.interactive.cloudupp.Daftar$Daptarin.doInBackground(Daftar.java:119)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
com.anansi.interactive.cloudupp.Daftar$Daptarin.doInBackground(Daftar.java:1)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
android.os.AsyncTask$2.call(AsyncTask.java:287)
02-03 12:14:29.427: E/AndroidRuntime(8791):  at
java.util.concurrent.FutureTask.run(FutureTask.java:234)
02-03 12:14:29.427: E/AndroidRuntime(8791):  ... 4 more
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