Android Studio：找不到构建工具修订版 30.0.3

Question

已安装最新版本的 Android Studio。

Android Studio Bumblebee | 2021.1.1 Canary 13
Build #AI-211.7628.21.2111.7762732, built on September 24, 2021
Runtime version: 11.0.11+9-b60-7590822 amd64
VM: OpenJDK 64-Bit Server VM by Oracle Corporation
Windows 10 10.0
GC: G1 Young Generation, G1 Old Generation
Memory: 1280M
Cores: 8
Registry: external.system.auto.import.disabled=true
Non-Bundled Plugins: org.jetbrains.kotlin (211-1.5.31-release-551-AS7442.40)

无法构建项目：构建每次都失败。以下是错误日志： 检查代理设置，似乎不需要，因为 SDK 更新和 Gradle 同步正在发生，没有任何问题。 如有遗漏，请指教。

> Executing tasks: [:app:assembleDebug] in project C:\MyOrganizer
> 
> IOException:
> https://dl.google.com/android/repository/addons_list-5.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-4.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-3.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-2.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-1.xml
> java.net.ConnectException: Connection refused: connect Failed to
> download any source lists! IO exception while downloading manifest:
> java.net.ConnectException: Connection refused: connect  at
> java.base/java.net.PlainSocketImpl.connect0(Native Method)  at
> java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:101)
>     at
> java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
>     at
> java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
>     at
> java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
>     at java.base/java.net.Socket.connect(Socket.java:609)   at
> java.base/java.net.Socket.connect(Socket.java:558)  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.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:203)
>     at
> java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1232)
>     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.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:168)
>     at
> com.android.sdklib.repository.legacy.remote.internal.DownloadCache.openUrl(DownloadCache.java:245)
>     at
> com.android.sdklib.repository.legacy.remote.internal.DownloadCache.downloadAndCache(DownloadCache.java:622)
>     at
> com.android.sdklib.repository.legacy.remote.internal.DownloadCache.openCachedUrl(DownloadCache.java:545)
>     at
> com.android.sdklib.repository.legacy.LegacyDownloader.downloadAndStream(LegacyDownloader.java:65)
>     at
> com.android.repository.impl.downloader.LocalFileAwareDownloader.downloadAndStream(LocalFileAwareDownloader.java:51)
>     at
> 
> 
> * Get more help at https://help.gradle.org
> 
> BUILD FAILED in 14s

请提出修复建议。谢谢

Answer 1

1- 你应该去 SDK Manager 并安装新的 Platform-tools enter image description here

2- 转到文件 -> 项目结构 -> 模块，然后从右列顶部选择属性选项卡 3-选择您的构建工具版本，然后单击确定。 enter image description here