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Merge branch 'debugging-docs'

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Brent Vatne 2015-05-29 13:04:54 -07:00
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docs/Debugging.md
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@ -8,24 +8,27 @@ next: testing
---
## Debugging React Native Apps
To debug the javascript code of your react app do the following:
1. Run your application in the iOS simulator.
2. Press ```Command + D``` and a webpage should open up at [http://localhost:8081/debugger-ui](http://localhost:8081/debugger-ui). (Chrome only for now)
3. Enable [Pause On Caught Exceptions](http://stackoverflow.com/questions/2233339/javascript-is-there-a-way-to-get-chrome-to-break-on-all-errors/17324511#17324511) for a better debugging experience.
4. Press ```Command + Option + I``` to open the Chrome Developer tools, or open it via ```View``` -> ```Developer``` -> ```Developer Tools```.
5. You should now be able to debug as you normally would.
To access the in-app developer menu, shake the iOS device or press `control + ⌘ + z` in the simulator.
> Hint
>
> To debug on a real device: Open the file ```RCTWebSocketExecutor.m``` and change ```localhost``` to the IP address of your computer. Shake the device to open the development menu with the option to start debugging.
> To disable the developer menu for production builds, open your project in Xcode and select `Product` → `Scheme` → `Edit Scheme...` (or press `⌘ + <`). Next, select `Run` from the menu on the left and change the Build Configuration to `Release`.
### Optional
Install the [React Developer Tools](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi?hl=en) extension for Google Chrome. This will allow you to navigate the view hierarchy if you select the ```React``` tab when the developer tools are open.
### Reload
Selecting `Reload` or pressing `⌘ + r` in the simulator will reload the JavaScript that powers your application. If you have added new resources (such as an image to `Images.xcassets`) or modified any Objective-C/Swift code, you will need to re-build from Xcode for the changes to take effect (you can do this with `⌘ + r` in Xcode).
## Live Reload
To activate Live Reload do the following:
### Chrome Developer Tools
To debug the JavaScript code in Chrome, select `Debug in Chrome` from the developer menu. This will open a new tab at [http://localhost:8081/debugger-ui](http://localhost:8081/debugger-ui).
1. Run your application in the iOS simulator.
2. Press ```Control + Command + Z```.
3. You will now see the `Enable/Disable Live Reload`, `Reload` and `Enable/Disable Debugging` options.
Press `⌘ + option + i` or select `View` → `Developer` → `Developer Tools` to toggle the developer tools console. Enable [Pause On Caught Exceptions](http://stackoverflow.com/questions/2233339/javascript-is-there-a-way-to-get-chrome-to-break-on-all-errors/17324511#17324511) for a better debugging experience.
To debug on a real device: Open the file `RCTWebSocketExecutor.m` and change `localhost` to the IP address of your computer. Shake the device to open the development menu with the option to start debugging.
#### React Developer Tools (optional)
Install the [React Developer Tools](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi?hl=en) extension for Google Chrome. This will allow you to navigate the component hierarchy via the `React` in the developer tools (see [facebook/react-devtools](https://github.com/facebook/react-devtools) for more information).
### Live Reload
Select `Enable Live Reload` via the developer menu to have the application automatically reload when changes are made to the JavaScript.
### FPS (Frames per Second) Monitor
On `0.5.0-rc` and higher versions, you can enable a FPS graph overlay in the developers menu in order to help you debug performance problems.

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docs/RunningOnDevice.md
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@ -35,6 +35,10 @@ The bundle script supports a couple of flags:
* `--dev` - sets the value of `__DEV__` variable to true. When `true` it turns on a bunch of useful development warnings. For production it is recommended to set `__DEV__=false`.
* `--minify` - pipe the JS code through UglifyJS.
## Disabling in-app developer menu
When building your app for production, your app's scheme should be set to `Release` as detailed in [the debugging documentation](/react-native/docs/debugging.html#debugging-react-native-apps) in order to disable the in-app developer menu.
## Troubleshooting
If `curl` command fails make sure the packager is running. Also try adding `--ipv4` flag to the end of it.