私はJava 7のアンドロイドスタジオエラーでJava 8を置き換えますか？

Question

私はなぜJAVA 8をJAVA 7に置き換えますか、Androidスタジオのエラーですか？

> Error:Error converting bytecode to dex: 
Cause: Dex cannot parse version 52 byte code. 
This is caused by library dependencies that have been compiled using Java 8 or above. 
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7' 
sourceCompatibility = '1.7' 
to that submodule's build.gradle file. 
Error:...while parsing android/support/v7/recyclerview/R$attr.class 
Error:Error converting bytecode to dex: 
Cause: Dex cannot parse version 52 byte code. 
This is caused by library dependencies that have been compiled using Java 8 or above. 
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7' 
sourceCompatibility = '1.7' 
to that submodule's build.gradle file. 
Error:...while parsing android/support/v7/recyclerview/R$dimen.class 
Error:Error converting bytecode to dex: 
Cause: Dex cannot parse version 52 byte code. 
This is caused by library dependencies that have been compiled using Java 8 or above. 
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7' 
sourceCompatibility = '1.7' 
to that submodule's build.gradle file. 
Error:...while parsing android/support/v7/recyclerview/R$id.class 
Error:Error converting bytecode to dex: 
Cause: Dex cannot parse version 52 byte code. 
This is caused by library dependencies that have been compiled using Java 8 or above. 
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7' 
sourceCompatibility = '1.7' 
to that submodule's build.gradle file. 
Error:...while parsing android/support/v7/recyclerview/R$styleable.class 
Error:Error converting bytecode to dex: 
Cause: Dex cannot parse version 52 byte code. 
This is caused by library dependencies that have been compiled using Java 8 or above. 
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7' 
sourceCompatibility = '1.7' 
to that submodule's build.gradle file. 
Error:...while parsing android/support/v7/recyclerview/R.class 
Error:Error converting bytecode to dex: 
Cause: Dex cannot parse version 52 byte code. 
This is caused by library dependencies that have been compiled using Java 8 or above. 
If you are using the 'java' gradle plugin in a library submodule add 
targetCompatibility = '1.7' 
sourceCompatibility = '1.7' 
to that submodule's build.gradle file. 
Error:...while parsing com/example/administrator/comjarlib/R$anim.class 
Error:Error converting bytecode to dex: 
............ 

AndroidスタジオでretroLambdaを使用すると思います。

同様の問題に直面しているか解決済みの人は、それを解決するためのポインタを与えることができます。

私が間違っているのGradleアンドロイドプラグインを取得しない場合、私はグレード2.10

Answer 1

とAndroidのメーカー2.1プレビュー3を使用していますが「Javaのプラグインを拡張するので、あなただけで、あなたの「アンドロイド」ブロックに次の2行を追加することができますあなたのbuild.gradle：

apply plugin: 'com.android.application' 

android { 

    targetCompatibility = '1.7' 
    sourceCompatibility = '1.7' 

    ... 
} 

私のためにうまくいきました。

Answer 2

これは私を助けました。プロジェクトのメインbuild.gradleファイルで、これらのコード行をallprojectsセクションに追加します（または、このセクションがない場合はこのセクションを追加します）。

allprojects { 

    tasks.withType(JavaCompile) { 
     sourceCompatibility = 1.7 
     targetCompatibility = 1.7 
    } 

}