问题

在构建桌面应用程序,web都正常,只真机调试和虚拟机调试出现这个问题,卡在Running ‘gradle assembleDebug,一直没有反应,期间可能会出现超时错误,比如下面

E/DartVM  (16965): MMProfiler::IsolateShutdown name:main
Exception in thread "main" java.net.ConnectException: Connection timed out: connect
// 也可能出现如下错误,当然下面是我在配置镜像源之后才出现的
Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure you trust this source!
Launching lib\main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...
Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure you trust this source!

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:checkDebugAarMetadata'.
> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
   > Could not find androidx.lifecycle:lifecycle-common:2.7.0.
     Searched in the following locations:

解决

配置/android/build.gradle

注意: google() mavenCentral()不要注释掉。

allprojects {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/public/' }
        maven { url 'https://maven.aliyun.com/repository/spring/'}
        maven { url 'https://maven.aliyun.com/repository/google/'}
        maven { url 'https://maven.aliyun.com/repository/gradle-plugin/'}
        maven { url 'https://maven.aliyun.com/repository/spring-plugin/'}
        maven { url 'https://maven.aliyun.com/repository/grails-core/'}
        maven { url 'https://maven.aliyun.com/repository/apache-snapshots/'}
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        google()
        mavenCentral()
    }
}

配置android/settings.gradle

    repositories {
        maven { url 'https://maven.aliyun.com/repository/public/' }
        maven { url 'https://maven.aliyun.com/repository/spring/'}
        maven { url 'https://maven.aliyun.com/repository/google/'}
        maven { url 'https://maven.aliyun.com/repository/gradle-plugin/'}
        maven { url 'https://maven.aliyun.com/repository/spring-plugin/'}
        maven { url 'https://maven.aliyun.com/repository/grails-core/'}
        maven { url 'https://maven.aliyun.com/repository/apache-snapshots/'}
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        google()
        mavenCentral()
        gradlePluginPortal()
    }

配置gradle/wrapper/gradle-wrapper.properties

注意distributionUrl要替换成自己本地的gradle位置,而且是zip包

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
#distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-all.zip
distributionUrl=file:///D:/env/gradle/gradle-8.4-all.zip

配置flutter sdk

groovy

packages\flutter_tools\gradle\src\main\groovy中找到flutter.groovy
搜索 buildscript,找到类似以下代码

buildscript {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        maven { url 'https://maven.aliyun.com/repository/public' }
        google()
        mavenCentral()
    }
    dependencies {
        classpath("com.android.tools.build:gradle:7.3.0")
    }
}

resolve_dependencies.gradle文件不用改,会根据环境变量自己配置,

settings.gradle.kts改成下面

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        maven { url=uri ("https://maven.aliyun.com/repository/google") }
        maven { url=uri ("https://maven.aliyun.com/repository/central") }
        maven { url=uri ("https://maven.aliyun.com/repository/gradle-plugin") }
        maven { url=uri ("https://maven.aliyun.com/repository/public") }
        maven { url = uri("https://s01.oss.sonatype.org/content/groups/public")}
        maven { url=uri ("https://jitpack.io") }
        maven { url=uri ("https://maven.aliyun.com/repository/releases") }
        maven { url =uri("https://maven.aliyun.com/repository/jcenter") }
        google()
        mavenCentral()
        gradlePluginPortal()
    }
}


执行 flutter clean在重新build

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