thank you for your reply I added try/catch code but I got no exception and it still doesn't send a email ;(
try { _context.startActivity(i); Log.d(LOG_TAG, "startActivity() called"); } catch (Exception e) { e.printStackTrace(); } below is my logcat log WARN/dalvikvm(582): threadid=3: thread exiting with uncaught exception (group=0x4001b188) DEBUG/ErrorReporter(582): uncaughtException() tThread[main,5,main], except:java.lang.RuntimeException: Unable to create service com.my.service: java.lang.NullPointerException INFO/ActivityManager(53): Starting activity: Intent { act=android.intent.action.CHOOSER flg=0x10000000 cmp=android/ com.android.internal.app.ChooserActivity (has extras) } DEBUG/ErrorReporter(582): startActivity() called ERROR/AndroidRuntime(582): Uncaught handler: thread main exiting due to uncaught exception ERROR/AndroidRuntime(582): java.lang.RuntimeException: Unable to create service com.my.service: java.lang.NullPointerException ERROR/AndroidRuntime(582): at android.app.ActivityThread.handleCreateService(ActivityThread.java: 2790) ERROR/AndroidRuntime(582): at android.app.ActivityThread.access $3200(ActivityThread.java:119) ERROR/AndroidRuntime(582): at android.app.ActivityThread $H.handleMessage(ActivityThread.java:1917) ERROR/AndroidRuntime(582): at android.os.Handler.dispatchMessage(Handler.java:99) ERROR/AndroidRuntime(582): at android.os.Looper.loop(Looper.java: 123) ERROR/AndroidRuntime(582): at android.app.ActivityThread.main(ActivityThread.java:4363) ERROR/AndroidRuntime(582): at java.lang.reflect.Method.invokeNative(Native Method) ERROR/AndroidRuntime(582): at java.lang.reflect.Method.invoke(Method.java:521) ERROR/AndroidRuntime(582): at com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:860) ERROR/AndroidRuntime(582): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) ERROR/AndroidRuntime(582): at dalvik.system.NativeStart.main(Native Method) ERROR/AndroidRuntime(582): Caused by: java.lang.NullPointerException ERROR/AndroidRuntime(582): at com.my.service.onCreate(ISPService.java:230) ERROR/AndroidRuntime(582): at android.app.ActivityThread.handleCreateService(ActivityThread.java: 2780) ERROR/AndroidRuntime(582): ... 10 more INFO/Process(53): Sending signal. PID: 582 SIG: 3 INFO/dalvikvm(582): threadid=7: reacting to signal 3 INFO/dalvikvm(582): Wrote stack trace to '/data/anr/traces.txt' I can't know why. -- 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