How to run React-Native Examples?

Question

I can't find any instructions on how to install and run one of the other Examples provided in 'https://github.com/facebook/react-native/tree/master/Examples' such as 'https://github.com/facebook/react-native/tree/master/Examples/Movies'.

The tutorial only tells you to do

react-native init AwesomeProject

which grabs 'https://github.com/facebook/react-native/tree/master/Examples/SampleApp'.

---

If I clone the entire 'react-native' repository, and then run

npm install
npm start

From the root folder (i.e. '/react-native'), and then open '/react-native/Examples/Movies/Movies.xcodeproj' in Xcode, and Run the project, it seems to build fine. The Simulator comes up, shows a "Movies" intro screen for the app, but then the red screen of death appears with a print out of:

:0

and Terminal, where 'npm start' is running at the root folder, prints out:

Error: EISDIR, read
    at Error (native)
[02:35:02] <START> request:/Examples/Movies/MoviesApp.includeRequire.runModule.bundle

Answer 1

It should work just by following the Getting Started Tutorial, except that you have to run npm install inside your react-native directory.

Then just run for example the Movie Project with Xcode.

If you want to "isolate" the MovieProject or another react-native example project, the easy way is to init a new react native app (react-native init MyAppName) and just copy the JS files from the example project (in the example below the Movie Project) into the new app folder.

And then don't forget to edit your iOS/AppDelegate.m file.

You have to edit 2 lines:

jsCodeLocation = [NSURL URLWithString:@"http:/localhost:8081/index.ios.bundle"];

By:

jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/MoviesApp.bundle"];

AND

RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
                                                  moduleName:@"MyAppName"
                                               launchOptions:launchOptions];

By:

RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
                                                  moduleName:@"MoviesApp"
                                               launchOptions:launchOptions];

---

Answer 2

First, meet the requirements on the getting started guide

Then, check out the React Native repository and run the following inside it:

1. npm install
2. open Examples/Movies/Movies.xcodeproj

If you have errors compiling due to linking errors, removing the derived data may help. Quit Xcode, delete /Users/{you}/Library/Developer/Xcode/DerivedData, and re-open Xcode.

Answer 3

Also, you can run the android version of the UIExplorer app by running the command:

./gradlew :Examples:UIExplorer:android:app:installDebug
./packager/packager.sh

or this:

./gradlew :Examples:Movies:android:app:installDebug
./packager/packager.sh

for the movies example (should be run on the react-native folder).

Also, you could run the gradle daemon to speed up the build time for Android.

Answer 4

You have to install node.js in your Terminal with

brew install node

ReactNative use Node.js to build the Javascript code inside the project.

Then you need Watchman, a file watcher from Facebook with

brew install watchman

React Native use Watchman to rebuild your code when there's a change in it.

The final thing is to install and run node with a Terminal window in the react-native folder.

npm install
npm start

Now you can open a project from the react-native/Examples folder in Xcode, then build and run it.