问题

在编译Flutter项目的时候出现问题：

Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'. Could not resolve io.flutter:flutter_embedding_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. Required by: project :app project :app > project :image_picker project :app > project :url_launcher > Could not resolve io.flutter:flutter_embedding_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. > Could not get resource 'jcenter.bintray.com/io/flutter/…'. Could not resolve io.flutter:arm64_v8a_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. Required by: project :app > Could not resolve io.flutter:arm64_v8a_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. > Could not get resource 'jcenter.bintray.com/io/flutter/…'. Could not resolve io.flutter:x86_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. Required by: project :app > Could not resolve io.flutter:x86_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. > Could not get resource 'jcenter.bintray.com/io/flutter/…'. > Could not HEAD 'jcenter.bintray.com/io/flutter/…'. Received status code 502 from server: Bad Gateway Could not resolve io.flutter:x86_64_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. Required by: project :app > Could not resolve io.flutter:x86_64_debug:1.0.0-e1e6ced81d029258d449bdec2ba3cddca9c2ca0c. > Could not get resource 'jcenter.bintray.com/io/flutter/…'. > Could not HEAD 'jcenter.bintray.com/io/flutter/…'. Received status code 502 from server: Bad Gateway

**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 help.gradle.org BUILD FAILED in 4s Finished with error: Gradle task assembleDebug failed with exit code 1**

原因

网络问题 从上面黑体字标注的结果来看：无法获得从jcenter.bintray.com/io/flutter/… 获得到io.flutter:flutter_embedding_debug:1.0.0 并且进入该页面也无效（魔法也无效访问）在这里插入图片描述

解决

进入android/build.gradle：在repositories添加新的源：（阿里云），并且ban掉Google和jcenter源

//google()
//jcenter()

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' }
maven { url "http://download.flutter.io" }

PS：也可以添加其他源如清华，中科大等

如图：在这里插入图片描述示例代码如下：

buildscript {
    ext.kotlin_version = '1.6.10'
    repositories {
        //google()
        //jcenter()
        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' }
        maven { url "http://download.flutter.io" }
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.0.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
    }
}

allprojects {
    repositories {
        //google()
        //jcenter()
        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' }
        maven { url "http://download.flutter.io" }
    }
}

Flutter报错：Could not resolve io.flutter:flutter_embedding_debug:1.0.0

问题

原因

解决