如何在 Android Studio 上更改项目语言级别

Question

I would like to set the Java version I'm using on Android Studio.

How do I set the 'Project language level' like I do on Intellij inside 'Project Structure...' --> 'Project'?

Answer 1

You can also edit this inside the Project Structure

Answer 2

Sample build.gradle file which allows me to use lambdas in Android Studio 2.1:

android {
compileSdkVersion 23
buildToolsVersion "23.0.2"

defaultConfig {
    applicationId "com.geniuscreations.successtaskanalyzer"
    minSdkVersion 17
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
    jackOptions {
        enabled true
    }
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}
}

Java 8 Language Features | Android Developers

Answer 3

Add this to your buld.gradle(:app)

android{
...

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}

...
}

It works fine then