Mac Android Studio编译Flutter项目

作者: 落落2023 | 来源:发表于2021-01-28 10:51 被阅读0次

Mac Android Studio编译Flutter项目
使用Android Studio编译flutter demo项目
常用开发软件bug
搭建Flutter开发环境
Flutter 搭建Mac环境
新建Flutter项目
flutter doctor mac下不通过
安装Flutter
Flutter开发工具使用技巧
Flutter开发工具实用技巧与快捷键

Android Studio编译Flutter项目选择iOS模拟器运行ok，选择安卓模拟器编译运行的时比如这里我选择Huawei P30 Pro可能会出现一些问题。

问题1：

编译的时候可能会一直显示

Launching lib/main.dart on Huawei P30 Pro in debug mode...
Running Gradle task 'assembleDebug'...

或者

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'android'.
> Could not resolve all artifacts for configuration ':classpath'.
 > Could not resolve com.android.tools.build:gradle:3.5.0.
 Required by:
     project :
  > Could not resolve com.android.tools.build:gradle:3.5.0.
     > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'.
        > Could not HEAD 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'.
           > Connection reset

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

* Get more help at https://help.gradle.org

BUILD FAILED in 10s
Exception: Gradle task assembleDebug failed with exit code 1

解决：
需有效网络访问到Google服务器，如果不能满足就需要修改镜像为国内的，具体修改为两处:
1.修改Flutter SDK 目录下的Flutter 打包配置文件flutter.gradle
因我下载Flutter SDK是放在文稿目录下，所以flutter.gradle路径为

  /Users/cosmo/Documents/flutter/packages/flutter_tools/gradle/flutter.gradle

图1-flutter.gradle 路径.png

找到Flutter SDK 的Flutter 打包配置文件flutter.gradle ，可用Sublime Text打开编辑

修改1：

buildscript {
    repositories {
    
        //注销默认地址
        // google()
        // jcenter()

    // 换用阿里镜像
    maven { url 'https://maven.aliyun.com/repository/google' }
    maven { url 'https://maven.aliyun.com/repository/jcenter' }
    maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
    }
}

修改2：

class FlutterPlugin implements Plugin<Project> {
    // 注释
    // private static final String DEFAULT_MAVEN_HOST = "https://storage.googleapis.com";
    //换用此行
    private static final String DEFAULT_MAVEN_HOST = "https://storage.flutter-io.cn";

    // The platforms that can be passed to the `--Ptarget-platform` flag.
    private static final String PLATFORM_ARM32  = "android-arm";
    private static final String PLATFORM_ARM64  = "android-arm64";
    private static final String PLATFORM_X86    = "android-x86";
    private static final String PLATFORM_X86_64 = "android-x64";

修改3：

    void addFlutterDependencies(buildType) {
        String flutterBuildMode = buildModeFor(buildType)
        if (!supportsBuildMode(flutterBuildMode)) {
            return
        }
        String hostedRepository = System.env.FLUTTER_STORAGE_BASE_URL ?: DEFAULT_MAVEN_HOST
        String repository = useLocalEngine()
            ? project.property('local-engine-repo')
            : "$hostedRepository/download.flutter.io"
        project.rootProject.allprojects {
            repositories {
                maven {
                    url repository
                }
                // 添加阿里镜像
                maven { url 'https://maven.aliyun.com/repository/google' }
                maven { url 'https://maven.aliyun.com/repository/jcenter' }
                maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
            }
        }

2.修改Flutter项目下的android工程目录下的build.gradle文件
Android Studio打开你的Flutter项目工程，修改android目录下的build.gradle文件

图2-Flutter示例her_app项目中build.gradle文件.png

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        //注销默认
//        google()
//        jcenter()
        //阿里镜像
        maven { url 'https://maven.aliyun.com/repository/google'}
        maven { url 'https://maven.aliyun.com/repository/jcenter'}
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public'}
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        //注销默认
//        google()
//        jcenter()
        //阿里镜像
        maven { url 'https://maven.aliyun.com/repository/google'}
        maven { url 'https://maven.aliyun.com/repository/jcenter'}
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public'}
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

编译运行


Launching lib/main.dart on Huawei P30 Pro in debug mode...
Running Gradle task 'assembleDebug'...
✓ Built build/app/outputs/flutter-apk/app-debug.apk.
Installing build/app/outputs/flutter-apk/app.apk...
Waiting for Huawei P30 Pro to report its views...
...
略之
...
io.flutter.embedding.android.FlutterActivity.onCreate(android.os.Bundle) 
I/OpenGLRenderer( 1977): Davey! duration=3542ms; Flags=1, IntendedVsync=446156254524, Vsync=449522921056, OldestInputEvent=9223372036854775807, NewestInputEvent=0, HandleInputStart=449523468479, AnimationStart=449523495773, PerformTraversalsStart=449523499548, DrawStart=449538335629, SyncQueued=449538955851, SyncStart=449575150045, IssueDrawCommandsStart=449575376245, SwapBuffers=449624850682, FrameCompleted=449735079179, DequeueBufferDuration=48265000, QueueBufferDuration=535000,

即ok

问题2：

Launching lib/main.dart on Huawei P30 Pro in debug mode...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> Failed to find Build Tools revision 28.0.3

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

* Get more help at https://help.gradle.org

BUILD FAILED in 1m 1s
Exception: Gradle task assembleDebug failed with exit code 1

解决：

因安装Android SDK时会自动帮我们安装一些必须的构建工具。根据报错信息

Failed to find Build Tools revision 28.0.3

在Appearance & Behavior ->System Settings ->Anroid SDK -> SDK Tools 勾选下载Android SDK 对应需要的构建工具installed即可：

图3-构建工具下载.png

问题3：

Launching lib/main.dart on Huawei P30 Pro in debug mode...
Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> Failed to find Platform SDK with path: platforms;android-29

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

* Get more help at https://help.gradle.org

BUILD FAILED in 1m 10s
Exception: Gradle task assembleDebug failed with exit code 1

解决：

根据报错信息
Failed to find Platform SDK with path: platforms;android-29

在Appearance & Behavior ->System Settings -> Anroid SDK -> SDK Platforms 勾选下载Android SDK 对应缺失版本installed即可：

图4-Android SDK 版本.png