Android 65536问题

android {

    compileSdkVersion 21
    buildToolsVersion ‘21.1.0‘

    defaultConfig {
       ...
       targetSdkVersion 21
       multiDexEnabled true // 多dex解决65536问题
   }
}

Execution failed for task ‘:app:transformClassesWithDexForDebug‘.

android {
//snip
//add this into your existing ‘android‘ block
    dexOptions {
        javaMaxHeapSize "4g"
    }
//snip
}