제목 그대로입니다.
ProgressDialog 나온다음에 AlertDialog 표시하고 싶은데요.

ProgressDialog
"업로드 중입니다..."

ProgressDialog  dismiss후
AlertDialog
"업로드 성공입니다"

ProgressDialog 에 스레드안에 AlertDialog 를 호출하는 메소드 호출하면.. 다음과 같은 에러가 나요.. ㅠ

해결책 아시는 분.. 바쁘시겠지만 답글 부탁드립니다.
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08-03 17:14:55.810: ERROR/AndroidRuntime(5317): Uncaught handler: thread Thread-9 exiting due to uncaught exception
08-03 17:14:55.854: ERROR/AndroidRuntime(5317): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at android.os.Handler.<init>(Handler.java:121)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at android.app.Dialog.<init>(Dialog.java:105)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at android.app.AlertDialog.<init>(AlertDialog.java:63)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at android.app.AlertDialog.<init>(AlertDialog.java:59)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at android.app.AlertDialog$Builder.create(AlertDialog.java:786)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at com.nate.qsmr.MR.dialog(MR.java:141)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at com.nate.qsmr.MR.doProcess(MR.java:263)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at com.nate.qsmr.MR.access$0(MR.java:248)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at com.nate.qsmr.MR$2.run(MR.java:242)
08-03 17:14:55.854: ERROR/AndroidRuntime(5317):     at java.lang.Thread.run(Thread.java:1096)