在這條線找到多個註釋：

Question

嗨，大家好，我完全新的節目，需要一些幫助，我希望你們中的一個可愛的人可以幫助我：

當我運行的AVD模擬器我然後單擊我的按鈕，我得到一個錯誤，說「不幸的是，事件記錄器已經停止」。

這是我的logcat說：

04-11 22:08:10.415: D/dalvikvm(544): Not late-enabling CheckJNI (already on) 
04-11 22:08:10.955: D/(544): Created 
04-11 22:08:11.445: D/gralloc_goldfish(544): Emulator without GPU emulation detected. 
04-11 22:08:19.615: D/AndroidRuntime(544): Shutting down VM 
04-11 22:08:19.615: W/dalvikvm(544): threadid=1: thread exiting with uncaught exception (group=0x409961f8) 
04-11 22:08:19.655: E/AndroidRuntime(544): FATAL EXCEPTION: main 
04-11 22:08:19.655: E/AndroidRuntime(544): java.lang.IllegalStateException: Could not execute method of the activity 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.view.View$1.onClick(View.java:3039) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.view.View.performClick(View.java:3480) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.view.View$PerformClick.run(View.java:13983) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.os.Handler.handleCallback(Handler.java:605) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.os.Handler.dispatchMessage(Handler.java:92) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.os.Looper.loop(Looper.java:137) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.app.ActivityThread.main(ActivityThread.java:4340) 
04-11 22:08:19.655: E/AndroidRuntime(544): at java.lang.reflect.Method.invokeNative(Native Method) 
04-11 22:08:19.655: E/AndroidRuntime(544): at java.lang.reflect.Method.invoke(Method.java:511) 
04-11 22:08:19.655: E/AndroidRuntime(544): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
04-11 22:08:19.655: E/AndroidRuntime(544): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
04-11 22:08:19.655: E/AndroidRuntime(544): at dalvik.system.NativeStart.main(Native Method) 
04-11 22:08:19.655: E/AndroidRuntime(544): Caused by: java.lang.reflect.InvocationTargetException 
04-11 22:08:19.655: E/AndroidRuntime(544): at java.lang.reflect.Method.invokeNative(Native Method) 
04-11 22:08:19.655: E/AndroidRuntime(544): at java.lang.reflect.Method.invoke(Method.java:511) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.view.View$1.onClick(View.java:3034) 
04-11 22:08:19.655: E/AndroidRuntime(544): ... 11 more 
04-11 22:08:19.655: E/AndroidRuntime(544): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.eventrecorder/com.example.eventrecorder.NewEvent}; have you declared this activity in your AndroidManifest.xml? 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1508) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.app.Activity.startActivityForResult(Activity.java:3190) 
04-11 22:08:19.655: E/AndroidRuntime(544): at android.app.Activity.startActivity(Activity.java:3297) 
04-11 22:08:19.655: E/AndroidRuntime(544): at com.example.eventrecorder.MainActivity.showAddForm(MainActivity.java:45) 
04-11 22:08:19.655: E/AndroidRuntime(544): ... 14 more 

Answer 1

你AndroidManifest.xml文件不具有<activity>元素與com.example.eventrecorder.NewEvent一個android:name屬性。

如果NewEvent應該是一項活動，您需要添加關聯的<activity>元素。

如果NewEvent不應該是一個活動，去行MainActivity 45，在你showAddForm()方法，並修復您使用的startActivity()是一個指向一個實際的活動Intent。