Question

问题：我想在Qt项目中使用Android构建系统（版本3），但是此gradle版本（与旧版本2相比）会更改生成的输出{{1} }文件位于apk下，而不是$buildDir/outputs/apk/debug下（已添加$buildDir/outputs/apk文件夹），但是当Qt Android工具包尝试将应用安装到Android设备时，它只会在旧位置查找，而无法找到apk文件。我使用Android Studio进行了检查，它表明Gradle 3正常工作

旧位置：debug

新位置：$build_folder/android-build\build\outputs\apk\my.apk

错误（编译）：

adb：错误：无法统计 'D：/Qt/FireBase/build-client01-Android_for_armeabi_v7a_GCC_4_9_Qt_5_11_0_for_Android_armv73-Release/android-build//build/outputs/apk/android-build-debug.apk'：没有这样的文件或目录

仅当我更改了Qt生成的默认$build_folder/android-build\build\outputs\apk\debug\my.apk并将gradle设置为版本3，默认生成的文件将build.gradle设置为旧版本classpath时，才会发生此问题旧：2.3.3

新：classpath 'com.android.tools.build:gradle:2.3.3'

我还有其他更改，也需要更改classpath 'com.android.tools.build:gradle:3.1.0，以下是更新的文件：

build.gradle

gradle-wrapper.properties

gradle-wrapper.properties

buildscript {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }

    dependencies {
        //classpath 'com.android.tools.build:gradle:2.3.3'
        classpath 'com.google.gms:google-services:4.0.1' // google-services plugin
        classpath 'com.android.tools.build:gradle:3.1.0'
    }
}

allprojects {
    repositories {
        jcenter()
        //google() // Google's Maven repository
        maven {
            url "https://maven.google.com"
        }
    }
}

apply plugin: 'com.android.application'


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

}

android {
    /*******************************************************
     * The following variables:
     * - androidBuildToolsVersion,
     * - androidCompileSdkVersion
     * - qt5AndroidDir - holds the path to qt android files
     *                   needed to build any Qt application
     *                   on Android.
     *
     * are defined in gradle.properties file. This file is
     * updated by QtCreator and androiddeployqt tools.
     * Changing them manually might break the compilation!
     *******************************************************/

    compileSdkVersion androidCompileSdkVersion.toInteger()

    buildToolsVersion androidBuildToolsVersion

    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = [qt5AndroidDir + '/src', 'src', 'java']
            aidl.srcDirs = [qt5AndroidDir + '/src', 'src', 'aidl']
            res.srcDirs = [qt5AndroidDir + '/res', 'res']
            resources.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            assets.srcDirs = ['assets']
            jniLibs.srcDirs = ['libs']
       }
    }

    lintOptions {
        abortOnError false
    }
}

dependencies {
  // ...


    //libfirebase_auth.a
    //libfirebase_app.a
    implementation 'com.google.firebase:firebase-core:16.0.1'
    implementation 'com.google.firebase:firebase-auth:16.0.2'
    implementation 'com.google.android.gms:play-services-base:15.0.1'

  // Getting a "Could not find" error? Make sure you have
  // added the Google maven respository to your root build.gradle
}
apply plugin: 'com.google.gms.google-services'

Answer 1

我仍然不知道如何指示Qt在哪里以及如何指示新的输出结构，但是作为一种解决方法，我现在将配置添加到build.gradle中，以复制所生成的apk返回到~/apk，Qt在其中寻找！

// make a copy of APK from "$buildDir/outputs/apk/debug" back to "$buildDir/outputs/apk"
def archiveBuildTypes = ["release", "debug"];
applicationVariants.all { variant ->
    variant.outputs.all { output ->
        if (variant.buildType.name in archiveBuildTypes) {
            def taskSuffix = variant.name.capitalize()
            def assembleTaskName = "assemble${taskSuffix}"
            if (tasks.findByName(assembleTaskName)) {
                def copyAPKFolderTask = tasks.create(name: "archive${taskSuffix}", type: org.gradle.api.tasks.Copy) {
                    description "copy APK to old folder"
                    def sourceFolder = "$buildDir/outputs/apk/$output.baseName"
                    def destinationFolder = "$buildDir/outputs/apk"
                    print "Copy apk from: $sourceFolder into $destinationFolder\n"
                    from(sourceFolder)
                    into destinationFolder
                    eachFile { file ->
                        file.path = file.name // so we have a "flat" copy
                    }
                    includeEmptyDirs = false
                }
                tasks[assembleTaskName].finalizedBy = [copyAPKFolderTask]
            }
        }
    }
}

更新： gradle 3.1.x和更高版本至少需要androidBuildToolsVersion 27，而Qt当前不支持高于androidBuildToolsVersion 26，因此实际上退回到支持构建工具的gradle 3.0.x可能更安全26 < p>

甚至有可能退回到gradle 2.3.3（对于compile和任何必需的模块，使用implementation而不是FireBase：

compile 'com.google.firebase:firebase-core:16.0.1'
...

Answer 2

我在build.gradle上使用它：

android {
...
    applicationVariants.all { variant ->
        variant.outputs.all {
            outputFileName = "../" + outputFileName
        }
    }
}

Qt Android输出APK在〜/ android-build \ build \ outputs \ apk \ debug中生成

2 个答案: