• 升级到 Android Studio 3.0 + Gradle 4.1 遇到的一些坑及解决方案


    问题一:

    Cannot set the value of read-only property 'outputFile' for ApkVariantOutputImpl_Decorated{apkData=Main{type=MAIN, fullName=commonDebug, filters=[]}} of type com.android.build.gradle.internal.api.ApkVariantOutputImpl. Open File
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    解决方案一:

    https://stackoverflow.com/questions/44239235/android-gradle-3-0-0-alpha2-plugin-cannot-set-the-value-of-read-only-property

    I used this code

     applicationVariants.all { variant ->
                    variant.outputs.each { output ->
                        def outputFile = output.outputFile
                        if (outputFile != null && outputFile.name.endsWith('.apk')) {
                            //输出apk名称为:应用名.apk
                            def fileName = "xxx.apk"
                            output.outputFile = new File(outputFile.parent, fileName)
                        }
                    }
                }
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    **Use all() instead of each() 
    Use outputFileName instead of output.outputFile if you change only file name (that is your case)**

    Example from the guide:

    // If you use each() to iterate through the variant objects,
    // you need to start using all(). That's because each() iterates
    // through only the objects that already exist during configuration time—
    // but those object don't exist at configuration time with the new model.
    // However, all() adapts to the new model by picking up object as they are
    // added during execution.
    
    android.applicationVariants.all { variant ->
                    variant.outputs.all {
                        outputFileName = "xxx.apk"
                    }
                }
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    问题二:

    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
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    解决方案二:

    http://blog.csdn.net/syif88/article/details/75009663

    大致是说,Plugin 3.0.0之后有一种自动匹配消耗库的机制,便于debug variant 自动消耗一个库,然后就是必须要所有的flavor 都属于同一个维度。 
    为了避免flavor 不同产生误差的问题,应该在所有的库模块都使用同一个foo尺寸。

    但是我们从中已经知道解决方案了:

    在主 app 的 build.gradle 里面的

    defaultConfig {
     targetSdkVersion:***
     minSdkVersion :***
     versionCode:***
     versionName :***
    
    //版本名后面加句话,意思是flavor dimension 它的维度就是该版本号,
    //这样维度就是都是统一的了
    
     **flavorDimensions "versionCode"**
    
    }
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    问题三:

    Error:Execution failed for task ':youyoubao:javaPreCompileCommonDebug'.
    > 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-compiler-8.6.0.jar (com.jakewharton:butterknife-compiler:8.6.0)
      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.
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    解决方案三:

    在 app 下的 build.gradle 的 defaultConfig 中加一句话:

    defaultConfig {
       ...
       javaCompileOptions { annotationProcessorOptions { includeCompileClasspath = true } }
    }


    转:
    https://blog.csdn.net/CHITTY1993/article/details/78667069


     

    Cannot set the value of read-only property 'outputFile' for ApkVariantOutputImpl_Decorated

    今天升级了AS3.0以后,在项目编译的时候发现Gradle中报错了,错误如下:
    Error:(60, 0) Cannot set the value of read-only property 'outputFile' for ApkVariantOutputImpl_Decorated{apkData=Main{type=MAIN, fullName=xiaomiRelease, filters=[]}} of type com.android.build.gradle.internal.api.ApkVariantOutputImpl.
    <a href="openFile:E:StudioMyApplicationCodeBookuild.gradle">Open File</a>
    经过一番折腾,网上找大牛的解读,弄明白了output.outputFile变成了只读属性,不能再往里面写东西了,以下是3.0之前的配置:
    applicationVariants.all { variant ->    //批量修改Apk名字
        variant.outputs.each { output ->
            def outputFile = output.outputFile
            if (outputFile != null && outputFile.name.endsWith('.apk') && 'release'.equals(variant.buildType.name)) {
                def fileName = outputFile.name.replace("${variant.flavorName}", "V${defaultConfig.versionName}-${variant.flavorName}")
                fileName = fileName.replace('.apk', "-${buildTime()}.apk")
                output.outputFile = new File(outputFile.parent, fileName)
            }
        }
    }
    下面是经过修改之后3.0里面批量修改APK名字的配置:
    applicationVariants.all { variant ->    //批量修改Apk名字
        variant.outputs.all { output ->
            if (!variant.buildType.isDebuggable()) {
                //获取签名的名字 variant.signingConfig.name
                //要被替换的源字符串
                def sourceFile = "-${variant.flavorName}-${variant.buildType.name}"
                //替换的字符串
                def replaceFile = "_V${variant.versionName}_${variant.flavorName}_${variant.buildType.name}_${buildTime()}"
                outputFileName = output.outputFile.name.replace(sourceFile, replaceFile);
                //遗留问题:如何获取当前module的name,如CodeBooke这个名字怎么获取到
            }
        }
    }
    问题:对于如何在gradle中获取module的name,还是没有找到相关的方法,希望有知道的大神留言交流。
    这是一个对AS 3.0变化总结比较全的博客:
     
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  • 原文地址:https://www.cnblogs.com/kenshinobiy/p/9188981.html
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