我将如何解决Ionic 3中转换字节码的错误

Question

我使用ionic 3发现问题，我尝试运行“ ionic cordova run android”，但出错，这是我得到的错误：

Dex: 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.
    UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.RuntimeException: Exception parsing classes
Error: cmd: Command failed with exit code 1 Error output:(Main.java:775)
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Dex: 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.
    UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.RuntimeException: Exception parsing classes

这是我的离子信息： geMpF.png

谁能帮我解决这个问题。

谢谢。

Answer 1

尝试在您的gradel文件中添加dexOptions并更改compileOptions

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.1"


    dexOptions {
        incremental true
    }

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