升级到Android Studio3.x遇到的问题及解决方案

升级到​​Android​​ Studio3.0遇到的问题及解决方案,前些天,google正式发布了Android Studio3.0。看这个版本号,这次是个大更新。升级后发现编译确实有很大的提升,还有最新的错误调试工具,总之,这次的更新google还是很有诚意的。

下载

Andriod Studio3.0下载

遇到的问题

1.flavorDimensions

错误日志 ​​?​

Error:All flavors must now belong to a named flavor dimension. Learn more at https://d.android.com/r/tools/flavorDimensions-missing-error-message.html


原因:gradle3.0需要使用flavorDimensions做多版本打包,修改如下:

​?​

android {
//...
defaultConfig {
//...
flavorDimensions "dimen"
}
}


然后在productFlavors中做相应的修改

​?​

productFlavors {
productA { dimension "dimen" }
productB { dimension "dimen" }
}


配置多个flavorDimensions

​?​

android {
//...
defaultConfig {
//...
flavorDimensions "dimenA","dimenB"
}
}
productFlavors {
productA { dimension "dimenA" }
productB { dimension "dimenB" }
productC { dimension "dimenA" }
}



2.apk命名

错误日志 ​​?​

Cannot set the value of read-only property 'outputFile' for ApkVariantOutputImpl_Decorated{apkData=Main{type=MAIN, fullName=busDebug, filters=[]}} of type com.android.build.gradle.internal.api.ApkVariantOutputImpl. Open File


之前的代码:

​?​

applicationVariants.all { variant ->
variant.outputs.each { output ->
def outputFile = output.outputFile
if (outputFile != null && outputFile.name.endsWith('.apk')) {
def fileName = "XXX-${defaultConfig.versionCode}-${defaultConfig.versionName}-${releaseTime()}-${productFlavors.name[0]}"
if (variant.buildType.name == 'release') {
fileName += '.apk'
} else if (variant.buildType.name == 'debug') {
fileName += '_debug.apk'
} else {
fileName += '_other.apk'
}
output.outputFile = new File(outputFile.parent, fileName)
}
}
}


gradle3.0 each替换为all,output.outputFile替换为outputFileName,不需要new File了,修改后的代码:

​?​

applicationVariants.all { variant ->
variant.outputs.all {
def fileName = "XXX-${defaultConfig.versionCode}-${defaultConfig.versionName}-${releaseTime()}-${productFlavors.name[0]}"
if (variant.buildType.name == 'release') {
fileName += '.apk'
} else if (variant.buildType.name == 'debug') {
fileName += '_debug.apk'
} else {
fileName += '_other.apk'
}
outputFileName = fileName
}
}


需要注意的是,使用Build->Generate Signed APK…的时候,生成的apk包会放在一个以渠道名命名的文件夹下


3.Annotation processors must be explicitly declared now.Please add them to the annotationProcessor configuration.

错误日志 ​​?​

Error:Execution failed for task ':app:javaPreCompilePreProductDebug'.
> Annotation processors must be explicitly declared now. The following dependencies on the compile classpath are found to contain annotation processor. Please add them to the annotationProcessor configuration.
- butterknife-7.0.1.jar (butterknife-7.0.1.jar)
Alternatively, set android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true to continue with previous behavior. Note that this option is deprecated and will be removed in the future.
See https://developer.android.com/r/tools/annotation-processor-error-message.html for more details.

修复方案 ​​?​

android {
//...
defaultConfig {
//...
javaCompileOptions {
annotationProcessorOptions {
includeCompileClasspath true
}
}
}
}



4.Aapt2Exception

错误日志 ​​?​

Error:(113, 5) error: style attribute '@android:attr/windowEnterAnimation' not found.
Error:(113, 5) error: style attribute '@android:attr/windowExitAnimation' not found.
...
Error:java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:Execution failed for task ':app:processPreProductDebugResources'.
> Failed to execute aapt

解决方案 在gradle.properties中添加如下代码,禁用aapt2编译 ​​?​

android.enableAapt2=false



5.其他

新版本gradle不需要配置buildToolsVersion

dependencies 引入包的时候是这样的

​?​

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
androidTestImplementation ...
implementation project ...
implementation files ...
implementation ...
testImplementation 'junit:junit:4.12'
}