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29 lines
1.1 KiB
Markdown
29 lines
1.1 KiB
Markdown
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# Flutter Attach
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## Overview
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A Flutter-command that attaches to applications that have been launched
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without `flutter run` and provides a HotRunner (enabling hot reload/restart).
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## Usage
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There are four ways for the attach command to discover a running app:
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1. If the app is already running and the observatory port is known, it can be
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explicitly provided to attach via the command-line, e.g. `$ flutter attach
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--debug-port 12345`
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1. If the app is already running and the platform is iOS, attach can use mDNS
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to lookup the observatory port via the application ID, with just `$ flutter
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attach`
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1. If the platform is Fuchsia the module name must be provided, e.g. `$
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flutter attach --module=mod_name`. This can be called either before or after
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the application is started, attach will poll the device if it cannot
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immediately discover the port
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1. On other platforms (i.e. Android), if the app is not yet running attach
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will listen and wait for the app to be (manually) started with the default
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command: `$ flutter attach`
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## Source
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See the [source](https://github.com/flutter/flutter/blob/master/packages/flutter_tools/lib/src/commands/attach.dart) for the attach command.
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