我收到此错误消息说
错误:将字节码转换为dex时出错:原因:Dex无法解析版本52字节代码。这是由使用Java 8或更高版本编译的库依赖项引起的。如果您在库子模块中使用'java'gradle插件,请将targetCompatibility ='1.7'sourceCompatibility ='1.7'添加到该子模块的build.gradle文件中。
我试图在依赖项中添加targetCompatibility ='1.7'和sourceCompatibility ='1.7',但它仍然给了我同样的错误,我该如何解决?
(我刚刚将mysql连接器添加到我的库中,它会自动生成该依赖项)
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.example.boneyflesh.connectnapls"
minSdkVersion 17
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.1.0'
testCompile 'junit:junit:4.12'
compile files('libs/mysql-connector-java-5.1.38-bin.jar')
}
答案 0 :(得分:6)
通过将此添加到app.gradle
来解决此问题defaultConfig {
jackOptions {
enabled true
}
}
dexOptions {
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}