生成签名的APK错误

Question

When I run an application in the emulator it works, but when I want to generate a signed APK I get the following error message:

[Error:Execution failed for task ':app:transformClassesWithDexForRelease'. > com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexIndexOverflowException: method ID not in [0, 0xffff]: 65536]

What does this error message mean and is there a way to solve this issue?

Answer 1

DexIndexOverflowException: Overflow mean a limit has been reached.

Your dex file size has reached it's limit ie 64K so you need to implement Multidex support into your project follow the official link of docs

or

add below to build.gradle to enable multidex support

defaultConfig {
    ...
    // Enabling multidex support.
    multiDexEnabled true
}

set the app name multidex support in your manifest application tag

<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>

And if you have an application class then enable dex before super.onCreate

MultiDex.install(getTargetContext());
super.onCreate(arguments);

Some tricks might handy : Remove unwanted dependencies ,files and use specific google play dependency like gms etc instead of adding it as a whole plus you can use best practice for proguard rules follow the link for an example