react-native/Examples/UIExplorer
Spencer Ahrens 5c856150ff Kill shouldItemUpdate
Summary:
It was just adding unnecessary complexity. Users should just use standard React perf best practices, like `PureComponent` and `shouldComponentUpdate`.

This should be backwards compatible - existing `shouldItemUpdate` usage will just be ignored and should consider migrating to this pattern:

```
class MyItem extends React.PureComponent {
  _onPress = () => {
  	this.props.onPressItem(this.props.id);
  };
  render() {
    return (
      <SomeOtherWidget title={this.props.title} onPress={this._onPress} />
    )
  }
}
...
_renderItem = ({item}) => (
  <MyItem onPressItem={this._onPressItem} title={item.title} id={item.id} />
);
```

Which will automatically prevent re-renders unless the relavent data changes.

Reviewed By: yungsters

Differential Revision: D4730599

fbshipit-source-id: 0f61efe96eb4d95bb3b7c4ec889e3e0e34436e56
2017-03-21 22:30:30 -07:00
..
UIExplorer Tease apart React and RCTBatchedBridge targets 2017-03-21 18:31:23 -07:00
UIExplorer-tvOS Apple TV support 2: Xcode projects and CI (scripts/objc-test.sh) 2016-10-05 07:28:44 -07:00
UIExplorer.xcodeproj rename UIExplorerUnitTests/TestBundle to UIExplorerUnitTests/UIExplorerUnitTestsBundle 2017-02-27 14:04:56 -08:00
UIExplorerCxx.xcodeproj Tease apart React and RCTBatchedBridge targets 2017-03-21 18:31:23 -07:00
UIExplorerIntegrationTests Add missing reference image for tvOS ImageSnapshotTest 2017-02-17 05:20:15 -08:00
UIExplorerUnitTests rename UIExplorerUnitTests/TestBundle to UIExplorerUnitTests/UIExplorerUnitTestsBundle 2017-02-27 14:04:56 -08:00
android/app Apply auto-formatter for BUCK files in fbandroid. 2017-02-27 14:04:56 -08:00
js Kill shouldItemUpdate 2017-03-21 22:30:30 -07:00
README.md Consolidate Running on Device (Android|iOS) Guides into one 2016-11-06 21:13:32 -08:00

README.md

UIExplorer

The UIExplorer is a sample app that showcases React Native views and modules.

Running this app

Before running the app, make sure you ran:

git clone https://github.com/facebook/react-native.git
cd react-native
npm install

Running on iOS

Mac OS and Xcode are required.

  • Open Examples/UIExplorer/UIExplorer.xcodeproj in Xcode
  • Hit the Run button

See Running on device if you want to use a physical device.

Running on Android

You'll need to have all the prerequisites (SDK, NDK) for Building React Native installed.

Start an Android emulator (Genymotion is recommended).

cd react-native
./gradlew :Examples:UIExplorer:android:app:installDebug
./packager/packager.sh

Note: Building for the first time can take a while.

Open the UIExplorer app in your emulator.

See Running on Device in case you want to use a physical device.

Running with Buck

Follow the same setup as running with gradle.

Install Buck from here.

Run the following commands from the react-native folder:

./gradlew :ReactAndroid:packageReactNdkLibsForBuck
buck fetch uiexplorer
buck install -r uiexplorer
./packager/packager.sh

Note: The native libs are still built using gradle. Full build with buck is coming soon(tm).

Built from source

Building the app on both iOS and Android means building the React Native framework from source. This way you're running the latest native and JS code the way you see it in your clone of the github repo.

This is different from apps created using react-native init which have a dependency on a specific version of React Native JS and native code, declared in a package.json file (and build.gradle for Android apps).