運行flutter應用時，Running Gradle task assembleDebug 無反應

1.修改項目build.gradle

buildscript {
    repositories {
        google()
        jcenter()

			//添加
//        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'
    }
}

2.修改flutter sdk 裏 flutter.gradle

參考路徑：C:\flutter_windows_1.17.1-stable\flutter\packages\flutter_tools\gradle

buildscript {
    repositories {
        google()
        jcenter()
        //添加內容
        //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'
    }
}