Question

我对编码非常陌生，这是我的第一个应用程序。令人非常沮丧的是，当在设备或模拟器上运行所述应用程序时，“不幸的是，应用程序名称已停止”错误出现了。我相信（通过查看LogCat）我已经找到错误“java.lang.ClassNotFoundException”的问题。请有人告诉我如何解决这个问题。

这是我的清单文件

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


<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name="com.benchaful.newBoard.activity"
          android:label="@string/app_name"
          android:screenOrientation="portrait">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<activity android:name="com.google.ads.AdActivity" 
      android:configChanges="keyboard|keyboardHidden|orientation" />
</application>
<uses-sdk android:targetSdkVersion="16" android:minSdkVersion="7" />
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

</manifest>

这是我的主要布局文件

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res/com.benchaful.newboard"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scrollview1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>

<LinearLayout android:layout_width="fill_parent"
 android:id="@+id/home_layout"
 android:orientation="vertical"
 android:layout_height="wrap_content"
 android:background="#000000"
 >

这里有一些按钮

<WebView 
android:id="@+id/accesskey"
android:layout_width="fill_parent"
android:layout_height="100px"
/>


</LinearLayout>
</ScrollView>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:ads="http://schemas.android.com/apk/res/com.benchaful.newboard"
          android:orientation="vertical"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:background="#ffffff"
          android:gravity="bottom"
          android:layout_alignParentBottom="true"
          android:layout_alignBottom="@+id/home_layout"
          >
        <com.google.ads.AdView
xmlns:ads="http://schemas.android.com/apk/libs/com.google.ads"
                             android:id="@+id/adView"
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
                             ads:adUnitId="a151a7cc8c54403"
                             ads:adSize="BANNER"
                             />
</LinearLayout>


</RelativeLayout>

这是我的LogCat

06-07 16:35:58.128: E/AndroidRuntime(5925): FATAL EXCEPTION: main
06-07 16:35:58.128: E/AndroidRuntime(5925): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.benchaful.newboard/com.benchaful.newBoard.activity.ComponentInfo}: java.lang.ClassNotFoundException: com.benchaful.newBoard.activity.ComponentInfo
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2045)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2146)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.app.ActivityThread.access$700(ActivityThread.java:140)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1238)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.os.Looper.loop(Looper.java:137)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.app.ActivityThread.main(ActivityThread.java:4944)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at java.lang.reflect.Method.invokeNative(Native Method)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at java.lang.reflect.Method.invoke(Method.java:511)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at dalvik.system.NativeStart.main(Native Method)
06-07 16:35:58.128: E/AndroidRuntime(5925): Caused by: java.lang.ClassNotFoundException: com.benchaful.newBoard.activity.ComponentInfo
06-07 16:35:58.128: E/AndroidRuntime(5925):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.app.Instrumentation.newActivity(Instrumentation.java:1068)
06-07 16:35:58.128: E/AndroidRuntime(5925):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2036)

Answer 1

从LinearLayout和RelativeLayout

中删除此行

xmlns:ads="http://schemas.android.com/apk/res/com.benchaful.newboard"

Answer 2

包名和类名区分大小写，请检查您如何编写“newboard”/“newBoard”

错误：由：java.lang.Classnotfoundexception引起

2 个答案: