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

来源：
https://stackoverflow.com/questions/37004069/errorjack-is-required-to-support-java-8-language-features

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android {  //  defaultConfig {    //     jackOptions { // 《== 添加      enabled true    }  }  compileOptions {    sourceCompatibility JavaVersion.VERSION_1_8    targetCompatibility JavaVersion.VERSION_1_8  }} 

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