如何在内部实现Multidex支持？

Question

As far as I understand, the 64K limit in the classical dex file arises since the byte code instruction for invoke allows for a 16bit value for indexing the functions within the dex. But with the introduction of Multidex support, I am not sure how the function indexing is handled across different dex files on a byte code level .

So far I tried to look on the android developer page, other than "a complex process" which happens during startup not much of technical details are mentioned

Answer 1

To support Multidex, your application's main class has to extends the class

android.support.multidex.MultiDexApplication

also, you need to add the following dependency in your app module's build.gradle:

dependencies {
  implementation 'com.android.support:multidex:1.0.3'
}

and set the multiDexEnabled to true

android {
    defaultConfig {
        ...
        multiDexEnabled true
    }
    ...
}