com.android.dex.DexIndexOverflowException: Cannot merge new index 66299 into a non-jumbo instruction

打包时控制台输出：

Error:Execution failed for task ':app:transformClassesWithDexForAll32Release'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexIndexOverflowException: Cannot merge new index 66676 into a non-jumbo instruction!

在主工程的build.gradle文件，android{} 内添加如下内容

    android.dexOptions {
        jumboMode = true
//       javaMaxHeapSize "2g"
    }
Eclipse 中是在project.properties中添加dex.force.jumbo=true