Question

修复上述错误： - 将应用程序支持库作为项目从sdk / extras / android / support / v7

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现在我有这个错误：

12-04 05:54:16.067: E/AndroidRuntime(1749): FATAL EXCEPTION: main
12-04 05:54:16.067: E/AndroidRuntime(1749): Process: com.tfg.webquest, PID: 1749
12-04 05:54:16.067: E/AndroidRuntime(1749): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.tfg.webquest/com.tfg.webquest.SplashScreenActivity}: java.lang.ClassNotFoundException: Didn't find class "com.tfg.webquest.SplashScreenActivity" on path: DexPathList[[zip file "/data/app/com.tfg.webquest-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.tfg.webquest-1, /system/lib]]
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.os.Handler.dispatchMessage(Handler.java:102)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.os.Looper.loop(Looper.java:136)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.app.ActivityThread.main(ActivityThread.java:5017)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at java.lang.reflect.Method.invokeNative(Native Method)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at java.lang.reflect.Method.invoke(Method.java:515)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at dalvik.system.NativeStart.main(Native Method)
12-04 05:54:16.067: E/AndroidRuntime(1749): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.tfg.webquest.SplashScreenActivity" on path: DexPathList[[zip file "/data/app/com.tfg.webquest-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.tfg.webquest-1, /system/lib]]
12-04 05:54:16.067: E/AndroidRuntime(1749):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
12-04 05:54:16.067: E/AndroidRuntime(1749):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112)
12-04 05:54:16.067: E/AndroidRuntime(1749):     ... 11 more

我已经解决了我在开头时遇到的java.lang.NoSuchFieldError。

可以使用此信息来解决错误:(谢谢）

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

<uses-sdk
    android:minSdkVersion="13"
    android:targetSdkVersion="21" />

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".SplashScreenActivity"
        android:label="@string/title_activity_splash_screen" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name" >
    </activity>
    <activity
        android:name=".HomeActivity"
        android:label="@string/title_activity_home" >
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.tfg.webquest.MainActivity" />
    </activity>

    <activity
        android:name=".RegisterActivity"
        android:label="@string/title_activity_register" >
    </activity>
    <activity
        android:name=".RegisterCourseActivity"
        android:label="@string/title_activity_register_course" >
    </activity>
    <activity
        android:name=".RegisterSubjectActivity"
        android:label="@string/title_activity_register_subject" >
    </activity>
    <activity
        android:name=".RegisterSubjectsActivity"
        android:label="@string/title_activity_list_view_checkboxes" >
    </activity>
    <activity
        android:name=".QuestIntroActivity"
        android:label="@string/title_quest_intro_activity" >
    </activity>
    <activity
        android:name=".QuestActivity"
        android:label="@string/title_quest_activity" >
    </activity>
    <activity
        android:name=".StatisticActivity"
        android:label="@string/StatisticActivity" >
    </activity>
    <activity
        android:name=".GameFinishedActivity"
        android:label="@string/GameFinishedActivity" >
    </activity>
    <activity
        android:name=".SettingsActivity"
        android:label="@string/title_activity_settings" >
    </activity>
</application>

</manifest>

Answer 1

我认为我们可以在答案中总结评论讨论，因为它现在很明显。您没有正确地将android支持库v7添加到您的项目中。您必须将其添加为Android库（带有资源），而不仅仅是jar到libs文件夹。关注support v7。

可理解的错误java.lang.RuntimeException：无法实例化活动ComponentInfo＆amp;没找到上课

1 个答案: