Android studio 升级后项目出错

升级完android studio运行项目出现以下错误

Default interface methods are only supported starting with Android N (--min-api 24): void androidx.lifecycle.DefaultLifecycleObserver.onCreate(androidx.lifecycle.LifecycleOwner)

解决方法在app build.gradle文件里加入

compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }