解决错误java.lang.UnsupportedOperationException

> com.Android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: Java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException 

导致编译失败，加入一行代码就可以了。

dexOptions {
    javaMaxHeapSize "4g"
}

dexOptions {
    javaMaxHeapSize "4g"
}
compileSdkVersion 23
buildToolsVersion "24.0.1"
defaultConfig {
    applicationId "com.bruce.a123education"
    minSdkVersion 15
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
    multiDexEnabled true
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile(‘proguard-android.txt‘), ‘proguard-rules.pro‘
    }
    debug {
        signingConfig signingConfigs.edu123
    }
}