flutter调试安卓失败

Question

flutter run

Flutter assets will be downloaded from https://mirrors.tuna.tsinghua.edu.cn/flutter. Make sure you trust this source!
Launching lib\main.dart on RMX3560 in debug mode...
Building with Flutter multidex support enabled.
Exception in thread "main" java.net.UnknownHostException: http://mirrors.opencas.cn
        at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:229)
        at java.base/java.net.Socket.connect(Socket.java:608)
        at java.base/java.net.Socket.connect(Socket.java:557)
        at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:182)
        at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474)
        at java.base/sun.net.www.http.HttpClient$1.run(HttpClient.java:526)
        at java.base/sun.net.www.http.HttpClient$1.run(HttpClient.java:524)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at java.base/sun.net.www.http.HttpClient.privilegedOpenServer(HttpClient.java:523)
        at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:564)
        at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:265)
        at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:372)
        at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:212)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1208)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081)
        at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:189)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1592)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1520)
        at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:250)
        at org.gradle.wrapper.Download.downloadInternal(Download.java:58)
        at org.gradle.wrapper.Download.download(Download.java:44)
        at org.gradle.wrapper.Install$1.call(Install.java:61)
        at org.gradle.wrapper.Install$1.call(Install.java:48)
        at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65)
        at org.gradle.wrapper.Install.createDist(Install.java:48)
        at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:128)
        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
Running Gradle task 'assembleDebug'...                           2,044ms
Exception: Gradle task assembleDebug failed with exit code 1

flutter doctor -v

Flutter assets will be downloaded from https://mirrors.tuna.tsinghua.edu.cn/flutter. Make sure you trust this source!
[√] Flutter (Channel stable, 3.7.11, on Microsoft Windows [版本 10.0.17763.4131], locale zh-CN)
    • Flutter version 3.7.11 on channel stable at D:\ProgramData\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f72efea43c (5 days ago), 2023-04-11 11:57:21 -0700
    • Engine revision 1a65d409c7
    • Dart version 2.19.6
    • DevTools version 2.20.1
    • Pub download mirror https://mirrors.tuna.tsinghua.edu.cn/dart-pub
    • Flutter download mirror https://mirrors.tuna.tsinghua.edu.cn/flutter

[X] Windows Version (Unable to confirm if installed Windows version is 10 or greater)

[√] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
    • Android SDK at D:\android-sdk
    • Platform android-33, build-tools 33.0.2
    • Java binary at: C:\Program Files\Java\jdk-11.0.15\bin\java
    • Java version Java(TM) SE Runtime Environment 18.9 (build 11.0.15+8-LTS-149)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • CHROME_EXECUTABLE = C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

[X] Visual Studio - develop for Windows
    X Visual Studio not installed; this is necessary for Windows development.
      Download at https://visualstudio.microsoft.com/downloads/.
      Please install the "Desktop development with C++" workload, including all of its default components

[√] Android Studio (version 2022.2)
    • Android Studio at D:\ProgramData\Android_Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-b2043.56-9586694)

[√] Connected device (4 available)
    • RMX3560 (mobile)  • NJG6WKI7VOTK8DVC • android-arm64  • Android 13 (API 33)
    • Windows (desktop) • windows          • windows-x64    • Microsoft Windows [版本 10.0.17763.4131]
    • Chrome (web)      • chrome           • web-javascript • Google Chrome 110.0.5481.178
    • Edge (web)        • edge             • web-javascript • Microsoft Edge 112.0.1722.46

[√] HTTP Host Availability
    • All required HTTP hosts are available

Answer 1

• 帮你找了个相似的问题, 你可以看下: https://ask.csdn.net/questions/7489038
• 这篇博客也不错, 你可以看下Flutter环境安装
• 除此之外, 这篇博客: Flutter时间格式化工具中的 安装 部分也许能够解决你的问题, 你可以仔细阅读以下内容或跳转源博客中阅读:
  

• flutter pub get
  

• 您还可以看一下 亢少军老师的flutter基础教程课程中的 页面跳转返回数据小节, 巩固相关知识点