Android 工作室 java.lang.NoClassDefFoundError: android.support.v4.app.NavUtilsJB
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Android studio java.lang.NoClassDefFoundError: android.support.v4.app.NavUtilsJB
提问by Alpha
This is my error log acheived with android studio 1.0.2
这是我使用 android studio 1.0.2 获得的错误日志
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$NavUtilsImplJB.getParentActivityName(NavUtils .java:125)
at android.support.v4.app.NavUtils.getParentActivityName(NavUtils.java:302)
at android.support.v4.app.NavUtils.getParentActivityName(NavUtils.java:281)
at android.support.v7.app.ActionBarActivityDelegateBase.onCreate(ActionBarActivityDelegateBase.java:142)
at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:123)
at com..******.*******.****.ActivityWelcome.onCreate(ActivityWelcome.java:33)
at android.app.Activity.performCreate(Activity.java:5104)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
at android.app.ActivityThread.access0(ActivityThread.java:141)
at android.app.ActivityThread$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)
Configuration
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'
}
How to solve this error? gradlew clean not helps. Build folders deletion also not working. Android studio shows no errors while compiling.
如何解决这个错误？gradlew clean 无济于事。构建文件夹删除也不起作用。Android studio 编译时没有显示错误。
回答by Sam
I had this problem and just found the solution - answer is RTFM! Here are the instructions: https://developer.android.com/tools/building/multidex.html
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 is a new feature and so requires a support library to be compatible with pre-lollipop devices. You need to add the following to your gradle file dependencies:
Multidexing 是一项新功能，因此需要一个支持库来与 pre-lollipop 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'
Also enable multidex output in your gradle file:
还要在您的 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
}
}
And then add the multidex support application to your manifest:
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>
Note:If your app already extends the Application class, you can override the attachBaseContext() method and call MultiDex.install(this) to enable multidex. For more information, see the MultiDexApplicationreference documentation.
注意：如果您的应用程序已经扩展了 Application 类，您可以覆盖 attachBaseContext() 方法并调用 MultiDex.install(this) 来启用 multidex。有关更多信息，请参阅MultiDexApplication参考文档。
@Override
protected void attachBaseContext(Context context) {
super.attachBaseContext(context);
MultiDex.install(this);
}
Again, see the instruction above for more information...
同样，请参阅上面的说明以获取更多信息...
Hope this helps
希望这可以帮助
回答by Ahsanwarsi
Was stuck for hours due to this issue but finally got the solution.
由于这个问题被困了几个小时，但最终得到了解决方案。
Step#1:
步骤1：
dependencies {
compile 'com.android.support:multidex:1.0.0'
}
Step#2:
第2步：
defaultConfig {
multiDexEnabled true
}
Step#3:
第 3 步：
public class AppController extends Application {
@Override
public void onCreate() {
super.onCreate();
MultiDex.install(this);
}
}
Happy coding!
快乐编码！
回答by Fred Sousa
Following solution worked for me:
以下解决方案对我有用：
Add
multiDexEnabled = truein yourdefault ConfigAdd compile
com.android.support:multidex:1.0.0in your dependenciesApplication class extend MultiDexApplicationinstead of justApplication
加入
multiDexEnabled = true你的default Configcom.android.support:multidex:1.0.0在您的依赖项中添加编译Application class extend MultiDexApplication而不仅仅是Application
回答by Maxim Mikhisor
In our case we got this error when we updated "support-v4" lib from 19 to 24 version.
在我们的例子中，当我们将“support-v4”库从 19 版本更新到 24 版本时，我们遇到了这个错误。
Version 19 contains NavUtilsJBclass:
版本 19 包含NavUtilsJB类：
But version 24 does not contain NavUtilsJBclass:
但是版本 24 不包含NavUtilsJB类：
Solution for this issue was just to create NavUtilsJBclass inside our project:
这个问题的解决方案只是在我们的项目中创建NavUtilsJB类：
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;
}
}
