react-native/RNTester
Joshua Alvarado 915a020fca Proper support of the accessibilityLabel for <Text> components on iOS
Summary:
**PR changes**
The RCTText class originally overrode the accessibilityLabel and returned the raw text of the class ignoring if the accessibilityLabel was set explicitly in code.
Example:
  <Text accessibilityLabel="Example"> Hello World </Text> // returns "Hello World" instead of "Example" for the accessibility label

My update checks if the super's accessibilityLabel is not nil and returns the value else it returns the raw text itself as a default to mirror what a UIKit's UILabel does. The super's accessibilityLabel is nil if the accessibilityLabel is not ever set in code. I don't check the length of the label because if the value was set to an empty purposely then it will respect that and return whatever was set in code.
With the new changes:
  <Text accessibilityLabel="Example"> Hello World </Text> // returns "Example" for the accessibilityLabel

This change doesn't support nested <Text> components with both accessibilityLabel's value set respectively. The parent's value will return.
Example:

  // returns "Example" instead of "Example Test" for the accessibility label
  <Text accessibilityLabel="Example">
    Hello
    <Text accessibilityLabel="Test">
      World
    </Text>
  </Text>

The workaround is just to set the only the parent view's accessibilityLabel with the label desired for it and all its nested views or just not nest the views if possible.
I believe a bigger change would be needed to support accessibility for nested views, for now the changes I have made should satisfy the requirements.

Reviewed By: shergin

Differential Revision: D5806097

fbshipit-source-id: aef2d7cec4657317fcd7dd557448905e4b767f1a
2017-09-12 12:53:59 -07:00
..
RNTester Fix Travis CI runs 2017-06-02 09:03:18 -07:00
RNTester-tvOS
RNTester.xcodeproj Merge fishhook.xcodeproj in RCTWebSocket 2017-08-09 07:48:09 -07:00
RNTesterIntegrationTests fixed image in RNTester snapshot example 2017-08-31 15:16:05 -07:00
RNTesterLegacy.xcodeproj Merge fishhook.xcodeproj in RCTWebSocket 2017-08-09 07:48:09 -07:00
RNTesterUnitTests Allow Cxx references to be used in native module's method signature 2017-09-07 09:17:04 -07:00
android/app Update OSS Fresco dependency 2017-07-12 07:54:09 -07:00
js Proper support of the accessibilityLabel for <Text> components on iOS 2017-09-12 12:53:59 -07:00
.eslintrc Disallow trailing commas in react-native-github 2017-08-17 16:20:04 -07:00
README.md Move packager launcher scripts outside of `packager/` 2017-05-23 16:17:09 -07:00

README.md

RNTester

The RNTester 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 RNTester/RNTester.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 :RNTester:android:app:installDebug
./scripts/packager.sh

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

Open the RNTester 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 rntester
buck install -r rntester
./scripts/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).