React Native运行react-native run-android时报错

Question

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Invalid https.proxyPort '', using default 443
IOException: https://dl.google.com/android...\_list-3.xml
java.net.ConnectException: Connection refused: connect
IOException: https://dl.google.com/android...\_list-2.xml
java.net.ConnectException: Connection refused: connect
IOException: https://dl.google.com/android...\_list-1.xml
java.net.ConnectException: Connection refused: connect
Failed to download any source lists!
File C:\Users\T7\.android\repositories.cfg could not be loaded.

IO exception while downloading manifest:
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.Socket.connect(Socket.java:589)
at java.net.Socket.connect(Socket.java:538)
at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
at sun.net.www.http.HttpClient$1.run(HttpClient.java:515)
at sun.net.www.http.HttpClient$1.run(HttpClient.java:513)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.http.HttpClient.privilegedOpenServer(HttpClient.java:512)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:553)
at sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1199)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:162)
at com.android.sdklib.repository.legacy.remote.internal.DownloadCache.openUrl(DownloadCache.java:247)
at com.android.sdklib.repository.legacy.remote.internal.DownloadCache.downloadAndCache(DownloadCache.java:624)
at com.android.sdklib.repository.legacy.remote.internal.DownloadCache.openCachedUrl(DownloadCache.java:547)
at com.android.sdklib.repository.legacy.LegacyDownloader.downloadAndStream(LegacyDownloader.java:61)
at com.android.repository.impl.downloader.LocalFileAwareDownloader.downloadAndStream(LocalFileAwareDownloader.java:51)
at com.android.repository.impl.manager.RemoteRepoLoaderImpl.lambda$fetchPackages$0(RemoteRepoLoaderImpl.java:149)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

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\`### 问题描述

问题出现的环境背景及自己尝试过哪些方法

相关代码

粘贴代码文本（请勿用截图）

你期待的结果是什么？实际看到的错误信息又是什么？

Answer 1

https://dl.google.com/android..._list-1.xml
java.net.ConnectException: Connection refused: connect
Failed to download any source lists!

通过上面这句可以看出，下载依赖失败了

Answer 2

已解决

buildscript {
    ext {
        buildToolsVersion = "29.0.2"
        minSdkVersion = 21
        compileSdkVersion = 29
        targetSdkVersion = 29
    }

此处指定了SDK29 我改成28就好了
然后遇到了新的问题...