Gradle + AndroidAnnotations会产生重复的类错误 - 需要在每次构建之前清理项目

Question

我在使用gradle构建将IntelliJ IDEA项目迁移到Android Studio时遇到问题.我已经设置了AndroidAnnotations库,就像其他各种帖子中推荐的一样,它工作得很好.但是,当多次编译我的项目而不执行:clean其间的任务时,我收到以下错误消息:

/project-dir/build/source/apt_generated/flavor1/release/com/example/app/MyActivity_.java:15: error: duplicate class: com.example.app.MyActivity_

[more errors here...]

我相信系列中的多个构建失败,因为AndroidAnnotations *_.java总是在:compile任务之前重新创建文件(不检查是否有必要)和:compile任务识别新文件(例如使用时间戳)但已经将它们作为预编译*.class文件找到因此抛出错误.这可能吗？我该如何防止这种行为？我可以为AndroidAnnotations添加必要性检查吗？或者这是另一个问题吗？

---

更新1:似乎从AndroidAnnotations本身抛出错误,因为:compile我删除时会起作用*.javaapt_generated手动文件夹内的文件时工作.

---

更新2:

我删除了以下一行 build.gradle:

// Automatically add the generated source code to the source set
android.sourceSets[getSourceSetName(variant)].java.srcDirs += aptOutput

我不知道为什么没有这条线就行.由于我没有使用Android Studio添加文件夹Mark Directory as > Sources Root.可能这是缓存的一些结果？或者gradle以某种方式将我生成的java文件自动添加到类路径中？

尽管如此,我还是会感谢任何评论.

---

更新3 /解决方案

删除行并将gradle构建文件与Android Studio同步后,自动生成的源代码将作为源根删除,从而导致IDE显示缺少类的错误.

最终,我在Android Annotations github问题上找到了解决方案:https://github.com/excilys/androidannotations/issues/676

我重新添加了将其添加到源集的语句(允许Android Studio将其显示为源根).此外,我使用以下方法从变种源集合中删除了文件:

variant.javaCompile.source = variant.javaCompile.source.filter { p ->
    return !p.getPath().startsWith(aptOutputDir.getPath())
}

现在识别生成的文件,并且重复的类错误消失了.

最好的问候,大卫

这是我的最终build.gradle.我希望这有助于你们中的一些人:

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:0.5.+'
    }
}

apply plugin: 'android'

repositories {
    mavenCentral()
}

configurations {
    // This is the annotations processor dependency configuration.
    apt
}

def getSourceSetName(variant) {
    return new File(variant.dirName).getName();
}

android {
    compileSdkVersion 18

    defaultConfig {
        versionCode 10
        versionName "1.0.2"
        targetSdkVersion 17
        minSdkVersion 10
    }

    buildToolsVersion "18.0.1"

    buildTypes {
        release {
            zipAlign true
        }
    }

    productFlavors {
        flavor1 {}
        flavor2 {}
    }

    // This has to go after the productFlavors command (otherwise moving the flavor source set root fails).
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }

        // We move the root of our flavors to support our legacy structure.
        flavor1.setRoot('flavors/flavor1')
        flavor2.setRoot('flavors/flavor2')
    }

    applicationVariants.all { variant ->
        def aptOutputDir = project.file("${project.buildDir}/source/apt_generated")
        def aptOutput = new File(aptOutputDir, variant.dirName)

        println "****************************"
        println "variant: ${variant.name}"
        println "manifest:  ${variant.processResources.manifestFile}"
        println "aptOutput:  ${aptOutput}"
        println "****************************"

        android.sourceSets[getSourceSetName(variant)].java.srcDirs+= aptOutput.getPath()

        variant.javaCompile.doFirst {
            println "*** Running AndroidAnnotations for ${variant.name}"
            aptOutput.mkdirs()


            variant.javaCompile.options.compilerArgs += [
                    '-processorpath', configurations.apt.getAsPath(),
                    '-AandroidManifestFile=' + variant.processResources.manifestFile,
                    '-s', aptOutput
            ]
        }

        variant.javaCompile.source = variant.javaCompile.source.filter { p ->
            return !p.getPath().startsWith(aptOutputDir.getPath())
        }
}

dependencies {
    // Android-Annotations
    apt 'com.googlecode.androidannotations:androidannotations:2.7.1'
    compile 'com.googlecode.androidannotations:androidannotations-api:2.7.1'

    // Include libraries only in flavor1
    flavor1Compile fileTree(dir: 'libs', include: '*.jar')
}

---

这是我的(初始)build.gradle(我剥离了不相关的部分):

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:0.5.+'
    }
}

apply plugin: 'android'

repositories {
    mavenCentral()
}

configurations {
    // This is the annotations processor dependency configuration.
    apt
}

def getSourceSetName(variant) {
    return new File(variant.dirName).getName();
}

android {
    compileSdkVersion 18

    defaultConfig {
        versionCode 10
        versionName "1.0.2"
        targetSdkVersion 17
        minSdkVersion 10
    }

    buildToolsVersion "18.0.1"

    buildTypes {
        release {
            zipAlign true
        }
    }

    productFlavors {
        flavor1 {}
    }

    // This has to go after the productFlavors command (otherwise moving the flavor source set root fails).
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }

        // We move the root of our flavor to support our legacy structure.
        flavor1.setRoot('flavors/flavor1')
    }

    applicationVariants.all { variant ->
        aptOutput = file("${project.buildDir}/source/apt_generated/${variant.dirName}")
        println "****************************"
        println "variant: ${variant.name}"
        println "manifest:  ${variant.processResources.manifestFile}"
        println "aptOutput:  ${aptOutput}"
        println "****************************"

        // Automatically add the generated source code to the source set
        android.sourceSets[getSourceSetName(variant)].java.srcDirs += aptOutput

        variant.javaCompile.doFirst {
            println "*** Running AndroidAnnotations for ${variant.name}"
            aptOutput.mkdirs()

            variant.javaCompile.options.compilerArgs += [
                    '-processorpath', configurations.apt.getAsPath(),
                    '-AandroidManifestFile=' + variant.processResources.manifestFile,
                    '-s', aptOutput
            ]
        }
    }
}

dependencies {
    // Android-Annotations
    apt 'com.googlecode.androidannotations:androidannotations:2.7.1'
    compile 'com.googlecode.androidannotations:androidannotations-api:2.7.1'

    // Include libraries only in flavor1
    flavor1Compile fileTree(dir: 'libs', include: '*.jar')
}

我将不胜感激任何帮助.

谢谢,大卫

Answer 1

最终，我在Android Annotations github issues上找到了解决方案： https: //github.com/excilys/androidannotations/issues/676

我重新添加了将其添加到源集的语句（允许 Android Studio 将其显示为源根）。此外，我使用以下命令从变体源集合中删除了文件：

variant.javaCompile.source = variant.javaCompile.source.filter { p ->
    return !p.getPath().startsWith(aptOutputDir.getPath())
}

现在生成的文件已被识别，并且重复的类错误消失了。

最好的问候，大卫