Android studio java.lang.NoClassDefFoundError: android.support.v4.app.NavUtilsJB

Question

This is my error log acheived with android studio 1.0.2

02-03 13:05:23.831    8385-8385/com.******.*******E/AndroidRuntime﹕     FATAL EXCEPTION: main
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Answer 1

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

Version 19 contains NavUtilsJB class:

But version 24 does not contain NavUtilsJB class:

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;
    }
}

Answer 2

Following solution worked for me:

1. Add multiDexEnabled = true in your default Config

2. Add compile com.android.support:multidex:1.0.0 in your dependencies

3. Application class extend MultiDexApplication instead of just Application

Answer 3

I had this problem and just found the solution - answer is RTFM! Here are the instructions: 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:

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

Also enable multidex output in your gradle file:

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:

<?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 MultiDexApplication reference documentation.

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

Again, see the instruction above for more information...

Hope this helps

Answer 4

Was stuck for hours due to this issue but finally got the solution.

Step#1:

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

Step#2:

defaultConfig {
        multiDexEnabled true
    }

Step#3:

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

Happy coding!