java.lang.RuntimeException:无法实例化活动ComponentInfo/ClassNotFoundException

Question

我正在开发Android应用程序,而不是我想要额外的新Activity我在我的logcat上有错误

我的LogCat:

04-19 12:59:17.654: D/AndroidRuntime(18135): Shutting down VM
04-19 12:59:17.654: W/dalvikvm(18135): threadid=1: thread exiting with uncaught exception (group=0x4001d878)
04-19 12:59:17.684: E/AndroidRuntime(18135): FATAL EXCEPTION: main
04-19 12:59:17.684: E/AndroidRuntime(18135): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.bvblogic.android.batterypower/com.bvblogic.android.batterypower.activities.UnlockActivity}: java.lang.ClassNotFoundException: com.bvblogic.android.batterypower.activities.UnlockActivity in loader dalvik.system.PathClassLoader[/data/app/com.bvblogic.android.batterypower-1.apk]
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2587)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2681)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.os.Handler.dispatchMessage(Handler.java:99)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.os.Looper.loop(Looper.java:123)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.app.ActivityThread.main(ActivityThread.java:4640)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at java.lang.reflect.Method.invokeNative(Native Method)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at java.lang.reflect.Method.invoke(Method.java:521)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at dalvik.system.NativeStart.main(Native Method)
04-19 12:59:17.684: E/AndroidRuntime(18135): Caused by: java.lang.ClassNotFoundException: com.bvblogic.android.batterypower.activities.UnlockActivity in loader dalvik.system.PathClassLoader[/data/app/com.bvblogic.android.batterypower-1.apk]
04-19 12:59:17.684: E/AndroidRuntime(18135):    at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
04-19 12:59:17.684: E/AndroidRuntime(18135):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2579)
04-19 12:59:17.684: E/AndroidRuntime(18135):    ... 11 more

我的manifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.bvblogic.android.batterypower"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="8" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.BATTERY_STATS" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.UPDATE_DEVICE_STATS" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
    <uses-permission android:name="android.permission.HARDWARE_TEST" />
    <uses-permission android:name="android.permission.RESTART_PACKAGES" />
    <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
    <uses-permission android:name="android.permission.GET_PACKAGE_SIZE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity android:name=".activities.UnlockActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.bvblogic.android.batterypower.activities.BatteryPowerTabActivity" >
        </activity>
        <activity android:name="com.bvblogic.android.batterypower.activities.MonitoringActivity" >
        </activity>
        <activity android:name="com.bvblogic.android.batterypower.activities.SettingsActivity" >
        </activity>
        <activity android:name="com.bvblogic.android.batterypower.activities.ProcessManagerActivity" >
        </activity>
        <activity
            android:name="com.bvblogic.android.batterypower.activities.DummyBrightnessActivity"
            android:excludeFromRecents="true"
            android:taskAffinity="com.bvblogic.android.batterypower.Dummy"
            android:theme="@android:style/Theme.Translucent.NoTitleBar" >
        </activity>

        <service android:name="com.bvblogic.android.batterypower.util.TurboBoost" >
        </service>
        <service android:name="com.bvblogic.android.batterypower.services.BatteryPowerService" />

        <receiver
            android:name="com.bvblogic.android.batterypower.alarm.RegistrationAlarm"
            android:process=":registration" >
        </receiver>
        <receiver
            android:name="com.bvblogic.android.batterypower.alarm.OnlinePingAlarm"
            android:process=":ping" >
        </receiver>
        <receiver
            android:name="com.bvblogic.android.batterypower.alarm.AdNotificationAlarm"
            android:process=":remote" >
        </receiver>
        <receiver
            android:name="com.bvblogic.android.batterypower.widget.MWidgetProvider"
            android:icon="@drawable/btn_remove"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>

            <meta-data
                android:name="android.appwidget.provider"
                android:resource="@xml/widget_provider" />
        </receiver>
    </application>

</manifest>

我的活动:

package com.bvblogic.android.batterypower.activities;

import com.bvblogic.android.batterypower.R;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;

public class UnlockActivity extends Activity {  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.settings_auto_saving_layout);
    }
}

然后我分配了intent-filter到BatteryPowerTabActivity应用程序启动正常.请帮我.谢谢

Answer 1

升级时,并不总是检查新"Android私有库"的"订购和导出".android-support-v4.jar现在位于"Android私有库"部分.

要解决此问题,请转到"订购和导出"并选中"Android私有库".然后刷新/清理/重建.

在为库项目完成此"修复"之后,您可能需要关闭并重新打开任何依赖项目,因为他们可能不会立即看到此"修复".

Answer 2

将清单文件中的活动声明更改为

 <activity android:name=".UnlockActivity">

要不然

<activity android:name="Yourcompletepackagename.UnlockActivity">

并尝试

Answer 3

老兄,当我的应用程序已经在市场上发布时,这也发生在我身上.这是一场彻底的灾难.我已经发布了5个小时后就意识到了这一点.

使用ADT运行它没有问题.问题在于生成的APK.因此,如果您发布应用程序,请在测试手机中测试纯APK的安装.

就像你一样,我也认为问题在于我的ADT的更新,在我的情况下是v22.

解决方案是清理和构建项目:

Android java.lang.RuntimeException:无法实例化活动ComponentInfo

Answer 4

如果您的活动类位于默认包中,则会发生这种情况.我通过将活动类移动到新包来修复它.并更改manifest.xml

之前

活动android:name =".MainActivity"

后

activity android:name ="new_package.MainActivity"