| title | 通过命令行运行开发者工具 |
|---|---|
| description | 学习如何通过命令行工具启动和使用开发者工具。 |
| tags | Flutter开发工具 |
| keywords | 命令行,启动,开发者工具,DevTools |
To run DevTools from the CLI,
you must have dart on your path.
Then to launch DevTools, run the dart devtools command.
要从命令行或终端运行 DevTools，
dart 必须要能在环境变量中找到。
然后你可以运行 dart devtools 命令启动 DevTools。
To upgrade DevTools, upgrade Flutter.
If a newer Dart SDK
(which is included in the Flutter SDK)
has a newer version of DevTools,
running dart devtools automatically launches this version.
If which dart points to a Dart SDK not
included in your Flutter SDK, updating that
Dart SDK won't update the Flutter version.
你可以通过升级 Flutter 来升级 DevTools。
如果新的 Dart SDK
（包含在 Flutter SDK 中）
包含了新版本的 DevTools，
运行 dart devtools 就会自动启动新的版本。
如果 which dart 指向的是 未 包含在 Flutter SDK 中的 Dart SDK，
则会更新该 Dart SDK，不会更新 Flutter 版本。
When you run DevTools from the command line, you should see output that looks something like:
在命令行或终端运行 DevTools 时，你会看到类似下方的输出：
Serving DevTools at http://127.0.0.1:9100
Next, start an app to connect to. This can be either a Flutter application or a Dart command-line application. The command below specifies a Flutter app:
下一步，启动并连接一个 app。可以是 Flutter app 或者一个 Dart 命令行应用。 下面这个命令是启动一个 Flutter app:
cd path/to/flutter/app
flutter runYou need to have a device connected, or a simulator open,
for flutter run to work. Once the app starts,
you'll see a message in your terminal that looks like
the following:
运行 flutter run 时，你需要连接一个设备或者模拟器。
当 app 启动后，你会在命令行中看到如下内容：
A Dart VM Service on macOS is available at:
http://127.0.0.1:51830/u37pq71Re0k=/
The Flutter DevTools debugger and profiler on macOS
is available at:
http://127.0.0.1:9100?uri=http://127.0.0.1:51830/u37pq71Re0k=/Open the DevTools instance connected to your app by opening the second link in Chrome.
在 Chrome 浏览器中打开第二个链接， 启动链接到你应用的开发者工具实例。
This URL contains a security token, so it's different for each run of your app. This means that if you stop your application and re-run it, you need to connect to DevTools again with the new URL.
这个链接包含一个安全认证的 token， 所以每次启动你的 app 时，链接都会改变。 这意味着如果重启 app 后， 你需要用新的 URL 链接来连接开发者工具。
If your app stops running or you opened DevTools manually, you should see a Connect dialog:
如果应用已经停止运行，或者你是手动打开的开发者工具， 你应该可以看到一个 Connect 对话框。
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You can manually connect DevTools to a new app instance
by copying the link you got from running your app,
such as http://127.0.0.1:51830/u37pq71Re0k=/
你可以通过复制运行应用时获得的链接，
手动将开发者工具链接到新的应用实例中去，
类似: http://127.0.0.1:52129/QjqebSY4lQ8=/。