我有一个简单的应用程序，您可以在textview中输入文本，然后按Submit，它会在另一个Activity中显示文本。但是，当我按“提交”时，给我消息“不幸的是，发送已停止”，我查看了SO上的其他线程，但是Unfortunately myfirstproject stopped working error in java似乎是最接近的，他们说要检查LogCat文件，但它提出了多个错误：
07-11 19:38:01.925: E/Trace(729): error opening trace file: No such file or directory (2)
07-11 19:38:05.815: I/Choreographer(729): Skipped 451 frames! The application may be doing too much work on its main thread.
07-11 19:38:06.009: D/gralloc_goldfish(729): Emulator without GPU emulation detected.
07-11 19:38:35.046: I/Choreographer(729): Skipped 45 frames! The application may be doing too much work on its main thread.
07-11 19:38:41.427: D/AndroidRuntime(729): Shutting down VM
07-11 19:38:41.435: W/dalvikvm(729): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
07-11 19:38:41.585: E/AndroidRuntime(729): FATAL EXCEPTION: main
07-11 19:38:41.585: E/AndroidRuntime(729): java.lang.IllegalStateException: Could not execute method of the activity
07-11 19:38:41.585: E/AndroidRuntime(729): at android.view.View$1.onClick(View.java:3591)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.view.View.performClick(View.java:4084)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.view.View$PerformClick.run(View.java:16966)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.os.Handler.handleCallback(Handler.java:615)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.os.Handler.dispatchMessage(Handler.java:92)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.os.Looper.loop(Looper.java:137)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.app.ActivityThread.main(ActivityThread.java:4745)
07-11 19:38:41.585: E/AndroidRuntime(729): at java.lang.reflect.Method.invokeNative(Native Method)
07-11 19:38:41.585: E/AndroidRuntime(729): at java.lang.reflect.Method.invoke(Method.java:511)
07-11 19:38:41.585: E/AndroidRuntime(729): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
07-11 19:38:41.585: E/AndroidRuntime(729): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-11 19:38:41.585: E/AndroidRuntime(729): at dalvik.system.NativeStart.main(Native Method)
07-11 19:38:41.585: E/AndroidRuntime(729): Caused by: java.lang.reflect.InvocationTargetException
07-11 19:38:41.585: E/AndroidRuntime(729): at java.lang.reflect.Method.invokeNative(Native Method)
07-11 19:38:41.585: E/AndroidRuntime(729): at java.lang.reflect.Method.invoke(Method.java:511)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.view.View$1.onClick(View.java:3586)
07-11 19:38:41.585: E/AndroidRuntime(729): ... 11 more
07-11 19:38:41.585: E/AndroidRuntime(729): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.point/com.point.DisplayMessageActivity}; have you declared this activity in your AndroidManifest.xml?
07-11 19:38:41.585: E/AndroidRuntime(729): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1541)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1416)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.app.Activity.startActivityForResult(Activity.java:3351)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.app.Activity.startActivityForResult(Activity.java:3312)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.app.Activity.startActivity(Activity.java:3522)
07-11 19:38:41.585: E/AndroidRuntime(729): at android.app.Activity.startActivity(Activity.java:3490)
07-11 19:38:41.585: E/AndroidRuntime(729): at com.point.MainActivity.sendMessage(MainActivity.java:34)
07-11 19:38:41.585: E/AndroidRuntime(729): ... 14 more
07-11 19:43:41.995: I/Process(729): Sending signal. PID: 729 SIG: 9
SO上的链接还说了一些关于不创建TextView的信息，并且该信息为NULL。
有人能帮我吗？
最佳答案
如果您更好地查看错误日志，将会看到：
原因：android.content.ActivityNotFoundException：无法找到显式的活动类{com.point / com.point.DisplayMessageActivity}；您是否在AndroidManifest.xml中声明了此活动？
那么，您的DisplayMessageActivity是在AndroidManifest.xml文件中声明的吗？