Android Java.Lang.Noclassdeffounderror

Android error - Caused by: java.lang.NoClassDefFoundError: android.support.v4.util.SparseArrayCompat

Right Click on your project -> Build Path -> Configure Build Path -> Order and Export Tab.

Make sure that "Android Private Libraries" is checked for Export.

If you've added any libraries from the libs/ folder, remove them as they are automatically added in the "Android Private Libraries" section.

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

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

java.lang.NoClassDefFoundError when running app with Android 5.1 with Android Studio 2.2RC

Here what we can see in runtime/dex_file.cc

bool DexFile::OpenFromZip(...) {
    ...
    while (i < 100) {
        std::string name = StringPrintf("classes%zu.dex", i)
        ...
    }
    ...
}

So if you have more than 100 dex files you get this NoClassDefFoundError.

There are issues in the tracker for this behavior:

https://code.google.com/p/android/issues/detail?id=234367
https://code.google.com/p/android/issues/detail?id=170485

It is possible to avoid this error by disabling pre-dexing. So you can put something like

subprojects {
    project.plugins.whenPluginAdded { plugin ->
        if ("com.android.build.gradle.AppPlugin".equals(plugin.class.name)) {
            project.android.dexOptions.preDexLibraries = false
        } else if ("com.android.build.gradle.LibraryPlugin".equals(plugin.class.name)) {
            project.android.dexOptions.preDexLibraries = false
        }
    }
}

in the root build.gradle file.

Error java.lang.ClassNotFoundException After Upgrading to AndroidX and Android Studio 4.0

I've already fixed the problem. Found the solution from this answer

java.lang.NoClassDefFoundError:failed resolution of :Lorg/apache/http/ProtocolVersion

The solution is to add

<uses-library android:name="org.apache.http.legacy" android:required="false" />

on manifest file.

I'm not using google maps, but the error might caused by the apache library.

ANDROID: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/mysql/cj/MysqlType

You cannot use recent versions of MySQL Connector/J on Android, because it uses types and features not available on Android. The specific reason here is that the type com.mysql.cj.MysqlType implements java.sql.SQLType (introduced in Java 8 / JDBC 4.2), and judging by the error this type does not exist in Android. In the past, I have also seen errors related to using named groups in regular expressions, which are (or were) also not supported on Android.

In general, you shouldn't use JDBC on Android, and it is better to use a REST API to mediate between your Android application and a database. However, if you really want to use MySQL from Android, you will have to use MySQL Connector/J 5.1.x instead of 8.0.x.

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