Ionic framework IONAL-Dex:将字节码转换为Dex时出错:-targetCompatibility=';1.7';sourceCompatibility=';1.7';

Ionic framework IONAL-Dex:将字节码转换为Dex时出错:-targetCompatibility=';1.7';sourceCompatibility=';1.7';,ionic-framework,ionic3,ionic-native,Ionic Framework,Ionic3,Ionic Native,targetCompatibility='1.7' sourceCompatibility='1.7' 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 'ja

targetCompatibility='1.7' sourceCompatibility='1.7'

   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
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