'android-24' requires JDK 1.8 or later to compile

Question

I use Android Studio and recently got the error:

Error:Execution failed for task \':app:compileDebugJavaWithJavac\'. compileSdkVersion \'android-24\' re

Answer 1

I have a same problem for days. I found a solution which worked from me on Windows. (I also set environment variables, but don't know whether it's needed.)

Add these lines to build.gradle file:

android {
     ...
     defaultConfig {
          ...
          jackOptions {
              enabled true
          }
     }
     compileOptions {
         targetCompatibility 1.8
         sourceCompatibility 1.8
     }
}

Source: https://code.google.com/p/android/issues/detail?id=203850