Logcat
02-29 21:19:31.765: E/AndroidRuntime(5374): java.lang.RuntimeException: Unable to stop activity {com.android.sinsunby/com.android.sinsunby.SevenActivity}: java.lang.IllegalStateException 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.ActivityThread.performDestroyActivity(ActivityThread.java: 3607) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java: 3673) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.ActivityThread.access$2900(ActivityThread.java:125) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.os.Handler.dispatchMessage(Handler.java:99) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.os.Looper.loop(Looper.java:123) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.ActivityThread.main(ActivityThread.java:4627) 02-29 21:19:31.765: E/AndroidRuntime(5374): at java.lang.reflect.Method.invokeNative(Native Method) 02-29 21:19:31.765: E/AndroidRuntime(5374): at java.lang.reflect.Method.invoke(Method.java:521) 02-29 21:19:31.765: E/AndroidRuntime(5374): at com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:858) 02-29 21:19:31.765: E/AndroidRuntime(5374): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 02-29 21:19:31.765: E/AndroidRuntime(5374): at dalvik.system.NativeStart.main(Native Method) 02-29 21:19:31.765: E/AndroidRuntime(5374): Caused by: java.lang.IllegalStateException 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.media.MediaPlayer._stop(Native Method) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.media.MediaPlayer.stop(MediaPlayer.java:964) 02-29 21:19:31.765: E/AndroidRuntime(5374): at com.android.sinsunby.SevenActivity.onStop(SevenActivity.java:236) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.Instrumentation.callActivityOnStop(Instrumentation.java: 1171) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.Activity.performStop(Activity.java:3857) 02-29 21:19:31.765: E/AndroidRuntime(5374): at android.app.ActivityThread.performDestroyActivity(ActivityThread.java: 3602) i don't know why this happen,,, -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en