Android項目-我可以使用init.gradle初始化腳本覆蓋build.gradle中設置的signingConfigs嗎？

Question

在CI服務器中，我想擺脫開發人員在Android項目的build.gradle文件中設置的signingConfigs：

的build.gradle

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
    }
}
apply plugin: 'com.android.application'

dependencies {
    compile fileTree(include: '*.jar', dir: 'libs')
}

android {
    signingConfigs {
        releaseConfig {
            keyAlias 'fake_key_alias'
            keyPassword 'fake_key_pass'
            storeFile file('C:/fake')
            storePassword 'fake_store_pass'
        }
    } 

    compileSdkVersion 25
    buildToolsVersion "25.0.0"

    defaultConfig {
        minSdkVersion 20
        targetSdkVersion 25
    }

    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }

        // Move the tests to tests/java, tests/res, etc...
        instrumentTest.setRoot('tests')

        // Move the build types to build-types/<type>
        // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
        // This moves them out of them default location under src/<type>/... which would
        // conflict with src/ being used by the main source set.
        // Adding new build types or product flavors should be accompanied
        // by a similar customization.
        debug.setRoot('build-types/debug')
        release.setRoot('build-types/release')
    }
    buildTypes {
        release {
            zipAlignEnabled true
            signingConfig signingConfigs.releaseConfig
        }
    }
}

然后，我想用放置在CI服務器中的init.gradle初始化腳本中編寫的signingConfig替換它們。 我想使用此處顯示的相同技術（Gradle Init腳本插件）替換存儲庫，但是我無法引用signingConfigs。

init.gradle

apply plugin:EnterpriseSigningConfigPlugin

class EnterpriseSigningConfigPlugin implements Plugin<Gradle> {

    void apply(Gradle gradle) {

        gradle.allprojects{ project ->
            project.android.signingConfigs {

                // Remove all signingConfigs
                all {SigningConfig cfg ->
                        remove cfg
                }

                // add the signingConfig
                signingConfigs {
                        releaseConfig {
                            keyAlias 'CI_key_alias'
                            keyPassword 'CI_key_pass'
                            storeFile file('/CI_storeFile')
                            storePassword 'CI_store_pass'
                        }

                }
            }
        }
    }
}

當我執行命令gradle -I init.gradle clean assembleRelease ，出現以下錯誤：

FAILURE: Build failed with an exception.

* Where:
Initialization script 'C:\Users\it056548\.init\init.gradle' line: 11

* What went wrong:
Could not compile initialization script 'C:\Users\it056548\.init\init.gradle'.
> startup failed:
  initialization script 'C:\Users\it056548\.init\init.gradle': 11: unable to resolve class SigningConfig
   @ line 11, column 21.
                     all {SigningConfig cfg ->
                         ^

  1 error


* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 3.721 secs

我應該如何引用signingConfigs？ 可行嗎 這是滿足我需求的有效方法嗎？ 先謝謝您的幫助！

Answer 1

為了解決這個問題，我不得不考慮到Gradle構建生命周期發生在三個階段：初始化，配置和執行。 重寫signingConfig分配給釋放buildType必須出現在配置階段結束時，生成后，即該評估了所有項目（S）性質和任務，他們仍然可以進行修改。

Gradle提供了項目鈎子project.afterEvaluate() ，它允許在配置階段結束時執行代碼塊，其中所有項目的屬性和任務均已設置，並且在執行階段之前仍可進行修改開始。

在初始化腳本中可以方便地使用此掛鈎，例如：

init.gradle

// Enter the scope of the root project
rootProject{

    println ""
    println "Project name: ${project.name}"
    println ""

    // Apply the subsequent code after the configuration phase has finished
    afterEvaluate{

        //Check if it exixts the properties file for the signing configuration specified in gradle.properties by the property helloWorldAppSigningProperties.
        //Then read the signing configuration properties
        //If something goes wrong an exception is thrown and the build execution is terminated
        if (new File(helloWorldAppSigningProperties).exists()){ 
            println ""
            println "Found properties file: ${helloWorldAppSigningProperties}!"

            def signingProps = new Properties()
            file(helloWorldAppSigningProperties).withInputStream{signingProps.load(it)}

            ext{
                ka = signingProps.getProperty("keyAlias")
                kp = signingProps.getProperty("keyPassword")
                sf = signingProps.getProperty("storeFile")
                sp = signingProps.getProperty("storePassword")
            }

            if (ka == null){
                throw new GradleException("Property keyAlias not found in file: ${helloWorldAppSigningProperties}")
            } else if (kp == null) {
                throw new GradleException("Property keyPassword not found in file: ${helloWorldAppSigningProperties}")
            } else if (sf == null) {
                throw new GradleException("Property storeFile not found in file: ${helloWorldAppSigningProperties}")
            } else if (sp == null) {
                throw new GradleException("Property storePassword not found in file: ${helloWorldAppSigningProperties}")
            }

        } else {
            throw new GradleException("Properties file: ${helloWorldAppSigningProperties} not found!")
        }   

        //Add a signing configuration named "helloWorldApp_release" to the android build
        //Signing configuration properties that were loaded from an external properties file are here assigned
        println ""
        println "Adding new signingConfig helloWorldApp_release"
        android.signingConfigs{
            helloWorldApp_release{
                keyAlias ka
                keyPassword kp
                storeFile file(sf)
                storePassword sp                
            }
        }

        //Display the list of the available signigConfigs
        println ""
        println "Available signingConfigs:"
        android.signingConfigs.all { sc ->
            println "------------------"
            println sc.name
        }
        println "------------------"    

        //Display the list of the available buildTypes
        println ""
        println "Available buildTypes:"
        android.buildTypes.all { bt ->
            println "------------------"
            println bt.name
        }
        println "------------------"

        println ""
        println "SigningConfig assigned to the release buildType BEFORE overriding: ${android.buildTypes.release.signingConfig.name}"

        //Set the helloWorldApp_release signingConfig to the release buildType
        android.buildTypes.release.signingConfig android.signingConfigs.helloWorldApp_release
        println ""
        println "SigningConfig assigned to the release buildType AFTER overriding: ${android.buildTypes.release.signingConfig.name}"
        println ""

    }

}

我將所需的signingConfig屬性外部化到一個文件，該文件在gradle.properties文件中引用了該文件的位置：

gradle.properties

org.gradle.jvmargs=-Xmx1536M

....
....
....

//Signing config properties files
helloWorldAppSigningProperties=C:\\Users\\it056548\\.signing\\HelloWorldApp.properties

它導致成功的android構建成功執行了gradle -I init.gradle clean assembleRelease命令， gradle -I init.gradle clean assembleRelease滿足了我的需求：

Project name: native

NDK is missing a "platforms" directory.
If you are using NDK, verify the ndk.dir is set to a valid NDK directory.  It is currently set to C:\android-sdks\ndk-bundle.
If you are not using NDK, unset the NDK variable from ANDROID_NDK_HOME or local.properties to remove this warning.


Found properties file: C:\Users\it056548\.signing\HelloWorldApp.properties!

Adding new signingConfig helloWorldApp_release

Available signingConfigs:
------------------
debug
------------------
helloWorldApp_release
------------------
releaseConfig
------------------

Available buildTypes:
------------------
debug
------------------
release
------------------

SigningConfig assigned to the release buildType BEFORE overriding: releaseConfig

SigningConfig assigned to the release buildType AFTER overriding: helloWorldApp_release

:clean
:preBuild UP-TO-DATE
:preReleaseBuild UP-TO-DATE
:checkReleaseManifest
:prepareReleaseDependencies
:compileReleaseAidl
:compileReleaseRenderscript
:generateReleaseBuildConfig
:generateReleaseResValues
:generateReleaseResources
:mergeReleaseResources
:processReleaseManifest
:processReleaseResources
:generateReleaseSources
:incrementalReleaseJavaCompilationSafeguard
:javaPreCompileRelease
:compileReleaseJavaWithJavac
:compileReleaseJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.).
:compileReleaseNdk NO-SOURCE
:compileReleaseSources
:lintVitalRelease
:mergeReleaseShaders
:compileReleaseShaders
:generateReleaseAssets
:mergeReleaseAssets
:transformClassesWithDexForRelease
:mergeReleaseJniLibFolders
:transformNativeLibsWithMergeJniLibsForRelease
:processReleaseJavaRes NO-SOURCE
:transformResourcesWithMergeJavaResForRelease
:validateSigningRelease
:packageRelease
:assembleRelease

BUILD SUCCESSFUL

Total time: 8.692 secs

希望這會有所幫助！