Lmbda 与RxJava配置

projacket build.gradle 中添加

classpath 'me.tatarka:gradle-retrolambda:3.2.5'

app build.gradle 中添加：

apply plugin: 'me.tatarka.retrolambda'

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}