错误:致:抛出java.lang.ClassNotFoundException [英] Error: caused by: java.lang.Classnotfoundexception

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问题描述

我非常新的编码,这是我的第一个应用程序。这是非常令人沮丧的,当跑步表示,设备或仿真器上应用程序的不幸的是,应用程序的名称已停止的错误走了过来。我相信,(通过观察LogCat中)我已经查明问题的错误抛出java.lang.ClassNotFoundException。请有人可以告诉我怎样才能解决这个问题。

这是我的清单文件

 < XML版本=1.0编码=UTF-8&GT?;
<舱单的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
  包=com.benchaful.newboard
  安卓版code =1
  机器人:VERSIONNAME =1.0>


<应用机器人:图标=@可绘制/图标机器人:标签=@字符串/ APP_NAME>
    <活动机器人:名称=com.benchaful.newBoard.activity
          机器人:标签=@字符串/ APP_NAME
          机器人:screenOrientation =画像>
    <意向滤光器>
        <作用机器人:名称=android.intent.action.MAIN/>
        <类机器人:名称=android.intent.category.LAUNCHER/>
    &所述; /意图滤光器>
< /活性GT;
<活动机器人:名称=com.google.ads.AdActivity
      机器人:configChanges =键盘| keyboardHidden |定位/>
< /用途>
<使用-SDK机器人:targetSdkVersion =16安卓的minSdkVersion =7/>
    <使用-权限的Andr​​oid:名称=android.permission.INTERNET对/>
    <使用-权限的Andr​​oid:名称=android.permission.ACCESS_NETWORK_STATE/>

< /舱单>
 

这是我的主要布局文件

 < XML版本=1.0编码=UTF-8&GT?;

< RelativeLayout的的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
的xmlns:广告=htt​​p://schemas.android.com/apk/res/com.benchaful.newboard
机器人:方向=垂直
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT
>

<滚动型的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
机器人:ID =@ + ID / scrollview1
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT
>

< LinearLayout中的android:layout_width =FILL_PARENT
 机器人:ID =@ + ID / home_layout
 机器人:方向=垂直
 机器人:layout_height =WRAP_CONTENT
 机器人:后台=#000000
 >
 

有一些按键位置

 <的WebView
机器人:ID =@ + ID / ACCESSKEY
机器人:layout_width =FILL_PARENT
机器人:layout_height =100像素
/>


< / LinearLayout中>
< /滚动型>

< LinearLayout中的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
          的xmlns:广告=htt​​p://schemas.android.com/apk/res/com.benchaful.newboard
          机器人:方向=垂直
          机器人:layout_width =FILL_PARENT
          机器人:layout_height =WRAP_CONTENT
          机器人:后台=#FFFFFF
          机器人:重力=底
          机器人:layout_alignParentBottom =真
          机器人:layout_alignBottom =@ + ID / home_layout
          >
        < com.google.ads.AdView
的xmlns:广告=htt​​p://schemas.android.com/apk/libs/com.google.ads
                             机器人:ID =@ + ID / AD浏览报
                             机器人:layout_width =WRAP_CONTENT
                             机器人:layout_height =WRAP_CONTENT
                             广告:adUnitId =a151a7cc8c54403
                             广告:adSize =大旗
                             />
< / LinearLayout中>


< / RelativeLayout的>
 

这是我的LogCat中

  06-07 16:35:58.128:E / AndroidRuntime(5925):致命异常:主要
06-07 16:35:58.128:E / AndroidRuntime(5925):java.lang.RuntimeException的:无法实例活动ComponentInfo {com.benchaful.newboard / com.benchaful.newBoard.activity.ComponentInfo}:抛出java.lang.ClassNotFoundException :com.benchaful.newBoard.activity.ComponentInfo
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2045)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2146)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.app.ActivityThread.access $ 700(ActivityThread.java:140)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1238)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.os.Handler.dispatchMessage(Handler.java:99)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.os.Looper.loop(Looper.java:137)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.app.ActivityThread.main(ActivityThread.java:4944)
06-07 16:35:58.128:E / AndroidRuntime(5925):在java.lang.reflect.Method.invokeNative(本机方法)
06-07 16:35:58.128:E / AndroidRuntime(5925):在java.lang.reflect.Method.invoke(Method.java:511)
06-07 16:35:58.128:E / AndroidRuntime(5925):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1038)
06-07 16:35:58.128:E / AndroidRuntime(5925):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
06-07 16:35:58.128:E / AndroidRuntime(5925):在dalvik.system.NativeStart.main(本机方法)
06-07 16:35:58.128:E / AndroidRuntime(5925):抛出java.lang.ClassNotFoundException:产生的原因com.benchaful.newBoard.activity.ComponentInfo
06-07 16:35:58.128:E / AndroidRuntime(5925):在dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
06-07 16:35:58.128:E / AndroidRuntime(5925):在java.lang.ClassLoader.loadClass(ClassLoader.java:501)
06-07 16:35:58.128:E / AndroidRuntime(5925):在java.lang.ClassLoader.loadClass(ClassLoader.java:461)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.app.Instrumentation.newActivity(Instrumentation.java:1068)
06-07 16:35:58.128:E / AndroidRuntime(5925):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2036)
 

解决方案

的LinearLayout RelativeLayout的

 的xmlns:广告=htt​​p://schemas.android.com/apk/res/com.benchaful.newboard
 

I am extremely new to coding, this is my first app. It is very frustrating that when running said app on a device or an emulator the "Unfortunately, app name has stopped" error came up. I believe that (by looking at the LogCat) I have pinpointed the problem to the error "java.lang.ClassNotFoundException". Please can somebody tell me how I can fix this.

This is my manifest file

<?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>

This is my main layout file

<?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"
 >

There is some buttons here

<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>

And this is my 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)

解决方案

Remove this line from your LinearLayout and RelativeLayout

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

这篇关于错误:致:抛出java.lang.ClassNotFoundException的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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