Android 不幸的是，“；appname"；停止

我已经完成并成功安装了该应用程序（我正在学习教程），但在模拟器或真实设备上运行时，它会给我错误消息，不幸的是，该消息已停止

原木猫

11-27 09:57:54.669: I/Process(1373): Sending signal. PID: 1373 SIG: 9
11-27 09:58:08.729: D/AndroidRuntime(1397): Shutting down VM
11-27 09:58:08.729: W/dalvikvm(1397): threadid=1: thread exiting with uncaught              exception (group=0xb3aa4b90)
11-27 09:58:08.899: E/AndroidRuntime(1397): FATAL EXCEPTION: main
11-27 09:58:08.899: E/AndroidRuntime(1397): Process: com.davidgassner.plainolnotes,   PID: 1397
11-27 09:58:08.899: E/AndroidRuntime(1397): java.lang.RuntimeException: Unable to  instantiate activity   ComponentInfo{com.davidgassner.plainolnotes/com.davidgassner.plainolnotes.Quick_Note_Taker}  : java.lang.ClassNotFoundException: Didn't find class "com.davidgassner.plainolnotes.Quick_Note_Taker" on path: DexPathList[[zip file "/data/app/com.davidgassner.plainolnotes-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.davidgassner.plainolnotes-2, /system/lib]]
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2102)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2226)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.app.ActivityThread.access$700(ActivityThread.java:135)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1397)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.os.Handler.dispatchMessage(Handler.java:102)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.os.Looper.loop(Looper.java:137)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.app.ActivityThread.main(ActivityThread.java:4998)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at java.lang.reflect.Method.invokeNative(Native Method)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at java.lang.reflect.Method.invoke(Method.java:515)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at dalvik.system.NativeStart.main(Native Method)
11-27 09:58:08.899: E/AndroidRuntime(1397): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.davidgassner.plainolnotes.Quick_Note_Taker" on path: DexPathList[[zip file "/data/app/com.davidgassner.plainolnotes-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.davidgassner.plainolnotes-2, /system/lib]]
11-27 09:58:08.899: E/AndroidRuntime(1397):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
11-27 09:58:08.899: E/AndroidRuntime(1397):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2093)
11-27 09:58:08.899: E/AndroidRuntime(1397):     ... 11 more

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.davidgassner.plainolnotes"
    android:versionCode="1"
    android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="13"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label=" Quick Note Taker"
    android:theme="@style/AppTheme" >
    <activity
        android:name="Quick_Note_Taker"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name=".NoteEditorActivity"/>

</application>

</manifest>

有人能帮我找出问题的根源吗？如果还需要什么，告诉我

感谢高级版。

您的清单（以及其他内容）定义了应用程序使用的活动。其中一项活动将被标记为将由发射器启动的活动。在这种情况下，它是：

<activity
    android:name="Quick_Note_Taker"

---

在您的清单中是否将快速记录者定义为活动？你尝试过清理和重建吗？是的，它被定义为一项活动。我已经尝试过清理和重建。你在清单中添加了所有的类吗？应该是的，我已经上传了。也许我错过了什么？对不起，我才刚开始，舱单看起来没问题。在您的源代码中找到了这个类文件吗？您能否确认它位于您的项目中的以下路径：src/com/davidgassner/plainolnotes/Quick_Note_Taker.java