i'm going to learn flutter. so i installed the latest version of flutter(Flutter 3.3.8) and make the path of that on windows. then i installed the latest version of android studio(Android Studio Dolphin | 2021.3.1 Patch 1) and installed the flutter plugin and sdk and emulator of api 32 and 29 on it.

also i installed the java jdk and jre v8.

but when i try to run the defult app on emulator in recevied this error on terminal :

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'android'.
> Could not resolve all files for configuration ':classpath'.
   > Could not find com.android.tools.build:gradle:7.1.2.
     Searched in the following locations:
       - https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/7.1.2/gradle-7.1.2.pom
       - https://repo.maven.apache.org/maven2/com/android/tools/build/gradle/7.1.2/gradle-7.1.2.pom
     Required by:
         project :

and here it is the result of doctor command of flutter :


C:\Users\new>flutter doctor -v
[√] Flutter (Channel stable, 3.3.8, on Microsoft Windows [Version 10.0.18363.535], locale en-US)
    • Flutter version 3.3.8 on channel stable at E:\src\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 52b3dc25f6 (9 days ago), 2022-11-09 12:09:26  0800
    • Engine revision 857bd6b74c
    • Dart version 2.18.4
    • DevTools version 2.15.0

[√] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at C:\Users\new\AppData\Local\Android\sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: E:\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.13 0-b1751.21-8125866)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.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 2021.3)
    • Android Studio at E:\Android\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 11.0.13 0-b1751.21-8125866)

[√] VS Code, 64-bit edition (version 1.71.2)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Flutter extension can be installed from:
       https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[√] Connected device (3 available)
    • sdk gphone64 x86 64 (mobile) • emulator-5554 • android-x64    • Android 12 (API 32) (emulator)
    • Windows (desktop)            • windows       • windows-x64    • Microsoft Windows [Version 10.0.18363.535]
    • Chrome (web)                 • chrome        • web-javascript • Google Chrome 107.0.5304.107

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

I would be grateful if you could guide me in solving this problem. thx to all!

build.gradle codes

CodePudding user response：

Add google() to your repositories(buildscript and allprojects sections) of app level build.gradle file. The Android Gradle plugin is located there: your_project_folder/android/build.gradle

buildscript {
  ...
  repositories {
    google()
    mavenCentral()
  }
}

allprojects {
  repositories {
    google()
    mavenCentral()
  }
}

CodePudding user response：

after some days and try many ways to solve this problem! found the right solution :

proxy setting was my problem and config that with new proxy settings solve that problem!

thanks everyone.

solved!