android pre dex errors in Android Studio

问题

I recently try to open up a project developed sometime ago into Android Studio and try to rebuild it and I get whole load Android Pre Dex errors which I am totally stuck how I get rid of them. Tried a lot of stuff such as changing Android API level, cleaning, change jdk version.. all doesn't work.

Any experts out there can enlighten me what is the likely cause of these errors.?

android pre dex errors screenshot

回答1:

Step 1: Add multidex enabled in default config

defaultConfig {
    applicationId "Your package name"
    minSdkVersion 16
    targetSdkVersion 23
    versionCode 5
    versionName '1.0.5'
    multiDexEnabled true
}

Step 2 : Add this library in your dependencies

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

Step 3 : Add this line in your MyApplication extends Application java class

 MultiDex.install(this);

Step 4: Don't forgot to call MyApplication class in your Application tag of manifest file. Like this

 android:name=".MyApplication"

After this 4 steps clean your project and run the application. Surely it will helps you!

Happy Coding!

回答2:

i already solved it it happen because you didnt setting the default java in android studio 2.3.3 or android studio 3.0 beta 6

1. go to file > project structure > SDK location
2. change the JDK Location to C:\Program Files\Java\jdk1.8.0_131

来源：https://stackoverflow.com/questions/38635783/android-pre-dex-errors-in-android-studio