eclipse运行Android程序,显示“unfortunately,XX应用has stopped”,log的错误如下:

03-31 08:04:39.133: E/AndroidRuntime(2529): FATAL EXCEPTION: main
03-31 08:04:39.133: E/AndroidRuntime(2529): Process: com.bluehaw, PID: 2529
03-31 08:04:39.133: E/AndroidRuntime(2529): android.content.ActivityNotFoundException: No Activity found to handle Intent { (has extras) }
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1798)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1512)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.app.Activity.startActivityForResult(Activity.java:3917)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.app.Activity.startActivityForResult(Activity.java:3877)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.app.Activity.startActivity(Activity.java:4200)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.app.Activity.startActivity(Activity.java:4168)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at com.bluehaw.MainActivity$1.onClick(MainActivity.java:50)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.view.View.performClick(View.java:5198)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.view.View$PerformClick.run(View.java:21147)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.os.Handler.handleCallback(Handler.java:739)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.os.Handler.dispatchMessage(Handler.java:95)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.os.Looper.loop(Looper.java:148)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at android.app.ActivityThread.main(ActivityThread.java:5417)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at java.lang.reflect.Method.invoke(Native Method)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
03-31 08:04:39.133: E/AndroidRuntime(2529):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
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