Android--Error:Jack is required to support java 8 language features. Either enable Jack or remove so

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Error:Jack is required to support java 8 language features. Either enable Jack or remove sourceCompatibility JavaVersion

问题描述：在使用lambda表达式的时候，需要解决的冲突

解决办法：

在gradle中添加代码：

//使用Java1.8        jackOptions{            enabled true        }    compileOptions {        sourceCompatibility JavaVersion.VERSION_1_8        targetCompatibility JavaVersion.VERSION_1_8    }

添加后如下：

apply plugin: 'com.android.application'android {    compileSdkVersion 25    buildToolsVersion '24.0.0'//    **兼容Android6.0系统所需，如果这句话报错，可在dependencies标签下使用compile 'cn.bmob.android:http-legacy:1.0'**    useLibrary 'org.apache.http.legacy'    defaultConfig {        applicationId "wang.fly.com.yunhealth"        minSdkVersion 15        targetSdkVersion 25        versionCode 1        versionName "1.0"        jackOptions{            enabled true        }    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }    sourceSets{        main.jniLibs.srcDirs = ["libs"]    }    //使用Java1.8    compileOptions {        sourceCompatibility JavaVersion.VERSION_1_8        targetCompatibility JavaVersion.VERSION_1_8    }    android{compileOptions.encoding="GBK"}}repositories{    flatDir{        dir 'libs'    }}dependencies {    compile fileTree(include: ['*.jar'], dir: 'libs')    compile name: 'SMSSDK-2.1.2', ext: 'aar'    compile name: 'SMSSDKGUI-2.1.2', ext: 'aar'    testCompile 'junit:junit:4.12'    compile 'com.android.support:appcompat-v7:25.0.0'    compile 'com.android.support:recyclerview-v7:25.0.+'    compile 'io.reactivex:rxjava:1.2.0'    compile 'io.reactivex:rxandroid:1.2.0'    compile files('libs/MobCommons-2016.1012.1447.jar')    compile files('libs/MobTools-2016.1012.1447.jar')}

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