Question

我在Android Studio中运行应用时遇到问题。当我按下Run时，＆＃34;选择部署目标＆＃34;发生对话框弹出，但我永远无法看到任何模拟器或设备发生。事件日志打印出以下内容并无限期重复：

5/6/18
12:40 PM    Gradle sync started

12:40 PM    Project setup started

12:41 PM    Gradle sync finished in 49s 932ms

12:41 PM    Executing tasks: [:app:generateDebugSources]

12:41 PM    Gradle build finished in 15s 765ms

12:44 PM    Unable to open connection to: localhost/0.0.0.0:5037, due to: java.net.ConnectException: Connection refused

12:44 PM    Connection attempts: 1

12:44 PM    Unable to open connection to: localhost/0.0.0.0:5037, due to: java.net.ConnectException: Connection refused

12:44 PM    Connection attempts: 2

12:44 PM    Unable to open connection to: localhost/0.0.0.0:5037, due to: java.net.ConnectException: Connection refused

12:44 PM    Connection attempts: 3

12:44 PM    Unable to open connection to: localhost/0.0.0.0:5037, due to: java.net.ConnectException: Connection refused

12:44 PM    Connection attempts: 4

12:44 PM    Unable to open connection to: localhost/0.0.0.0:5037, due to: java.net.ConnectException: Connection refused

12:44 PM    Connection attempts: 5

我可以使用命令行运行react-native项目，但直接使用Android Studio时会发生这种情况。

我尝试在Android Studio中创建新项目，但结果仍然相同。我相信一旦我从Android Studio 3.0更新到3.1，就会发生这种情况。

有任何想法可以解决此问题或获取更多信息吗？

感谢。

系统信息：

MacOS High Sierra 10.3.14 Macbook Pro（2011年末）

软件信息：

Android Studio 3.1.2 Java 9.0.4

Answer 1

我在Mac上也遇到了类似的问题，并通过将行 127.0.0.1 localhost 附加到/ etc / hosts

来解决

Answer 2

我在Mac上也遇到了类似的问题，并通过删除该行来修复了该问题 / strong / etc / hosts中的 :: 1本地主机。

Android Studio - 无法连接到设备或模拟器

2 个答案: