12

这是我用 android studio 1.0.2 实现的错误日志

02-03 13:05:23.831    8385-8385/com.******.*******E/AndroidRuntime﹕     FATAL EXCEPTION: main
    java.lang.NoClassDefFoundError: android.support.v4.app.NavUtilsJB
        at   android.support.v4.app.NavUtils$NavUtilsImplJB.getParentActivityName(NavUtils    .java:125)
        at android.support.v4.app.NavUtils.getParentActivityName(NavUtils.java:302)
        at android.support.v4.app.NavUtils.getParentActivityName(NavUtils.java:281)
        at android.support.v7.app.ActionBarActivityDelegateBase.onCreate(ActionBarActivityDelegateBase.java:142)
        at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:123)
        at com..******.*******.****.ActivityWelcome.onCreate(ActivityWelcome.java:33)
        at android.app.Activity.performCreate(Activity.java:5104)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
        at android.app.ActivityThread.access$600(ActivityThread.java:141)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:5041)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
        at dalvik.system.NativeStart.main(Native Method)

配置

buildToolsVersion "21.1.2"
android SDK TOOLS"24.0.2"
multidex enabled
predexLibraries =false
incremental = true
jumboMode = false
  dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.google.android.gms:play-services:6.5.87'
    compile 'com.google.code.gson:gson:2.3'
    compile 'com.android.support:support-v4:21.0.3@aar'
    compile 'com.android.support:appcompat-v7:21.0.3@aar'
    compile project(':ViewPagerIndicator')
    compile('de.keyboardsurfer.android.widget:crouton:1.8.4@aar') {
        exclude group: 'com.google.android', module: 'support-v4'
    }
    compile 'org.java-websocket:Java-WebSocket:1.3.0'
}

如何解决这个错误?gradlew clean 没有帮助。构建文件夹删除也不起作用。Android Studio 在编译时没有显示错误。

4

4 回答 4

41

我遇到了这个问题,刚刚找到了解决方案 - 答案是 RTFM!以下是说明:https ://developer.android.com/tools/building/multidex.html

Multidexing 是一项新功能,因此需要一个支持库才能与棒棒糖之前的设备兼容。您需要将以下内容添加到您的 gradle 文件依赖项中:

compile 'com.android.support:multidex:1.0.0'

还要在你的 gradle 文件中启用 multidex 输出:

android {
    compileSdkVersion 21
    buildToolsVersion "21.1.0"

    defaultConfig {
        ...
        minSdkVersion 14
        targetSdkVersion 21
        ...

        // Enabling multidex support.
        multiDexEnabled true
    }
}

然后将 multidex 支持应用程序添加到您的清单中:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android.multidex.myapplication">
    <application
        ...
        android:name="android.support.multidex.MultiDexApplication">
        ...
    </application>
</manifest>

注意:如果您的应用已经扩展了 Application 类,您可以重写 attachBaseContext() 方法并调用 MultiDex.install(this) 以启用 multidex。有关详细信息,请参阅MultiDexApplication参考文档。

@Override
protected void attachBaseContext(Context context) {
    super.attachBaseContext(context);
    MultiDex.install(this);
}

再次,请参阅上面的说明以获取更多信息...

希望这可以帮助

于 2015-02-25T15:02:38.630 回答
4

由于这个问题被困了几个小时,但最终得到了解决方案。

步骤1:

dependencies {
compile 'com.android.support:multidex:1.0.0'
}

第2步:

defaultConfig {
        multiDexEnabled true
    }

步骤#3:

public class AppController extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        MultiDex.install(this);
    }
}

快乐编码!

于 2016-02-03T11:45:51.797 回答
3

以下解决方案对我有用:

  1. 添加multiDexEnabled = true您的default Config

  2. com.android.support:multidex:1.0.0在依赖项中添加编译

  3. Application class extend MultiDexApplication而不仅仅是Application

于 2016-05-05T03:24:59.153 回答
0

In our case we got this error when we updated "support-v4" lib from 19 to 24 version.

Version 19 contains NavUtilsJB class:

enter image description here

But version 24 does not contain NavUtilsJB class:

enter image description here

Solution for this issue was just to create NavUtilsJB class inside our project:

package android.support.v4.app;

import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;

class NavUtilsJB {
    public static Intent getParentActivityIntent(Activity activity) {
        return activity.getParentActivityIntent();
    }
    public static boolean shouldUpRecreateTask(Activity activity, Intent targetIntent) {
        return activity.shouldUpRecreateTask(targetIntent);
    }
    public static void navigateUpTo(Activity activity, Intent upIntent) {
        activity.navigateUpTo(upIntent);
    }
    public static String getParentActivityName(ActivityInfo info) {
        return info.parentActivityName;
    }
}
于 2019-03-14T21:40:38.483 回答