react-native/RNTester
Mehdi Mulani 892212bad2 Fix controlled <TextInput> on iOS when inputting in Chinese/Japanese
Summary:
@public
This should fix #18403.
When the user is inputting in Chinese/Japanese with <TextInput> in a controlled manner, the RCTBaseTextInputView will compare the JS-generated attributed string against the TextInputView attributed string and repeatedly overwrite the TextInputView one. This is because the native TextInputView will provide extra styling to show that some text is provisional.
My solution is to do a plain text string comparison at this point, like how we do for dictation.

Expected behavior when typing in a language that has "multistage" text input: For instance, in Chinese/Japanese it's common to type out the pronunciation for a word and then choose the appropriate word from above the keyboard. In this model, the "pronunciation" shows up in the text box first and then is replaced with the chosen word.
Using the word Japan which is written 日本 but first typed as にほん. It takes 4 key-presses to get to 日本, since に, ほ, ん, are all typed and then 日本 is selected. So here is what should happen:

1. enter に, onChange fires with 'に', markedTextRange covers 'に'
2. enter ほ, onChange fires with 'にほ', markedTextRange covers 'にほ'
3. enter ん, onChange fires with 'にほん', markedTextRange covers 'にほん'
4. user selects 日本 from the menu above the keyboard (provided by the keyboard/OS), onChange fires with '日本', markedTextRange is removed

previously we were overwriting the attributed text which would remove the markedTextRange, preventing the user from selecting 日本 from above the keyboard.

Cheekily, I've also fixed an issue with secure text entry as it's the same type of problem.

Reviewed By: PeteTheHeat

Differential Revision: D9002295

fbshipit-source-id: 7304ede055f301dab9ce1ea70f65308f2a4b4a8f
2018-07-30 08:01:10 -07:00
..
RNTester Update license headers for MIT license 2018-02-16 18:31:53 -08:00
RNTester-tvOS Re-license and rename UIExplorer integration test app as RNTester 2017-05-08 11:31:19 -07:00
RNTester.xcodeproj Update Xcode projects (#19574) 2018-06-19 23:48:12 -07:00
RNTesterIntegrationTests RN: Disable testImageCachePolicyTest 2018-05-04 10:58:46 -07:00
RNTesterPods.xcodeproj Update Xcode projects (#19574) 2018-06-19 23:48:12 -07:00
RNTesterUnitTests iOS OSS: deployment target 8.0 => 9.0 2018-05-22 01:16:45 -07:00
android/app android targetSdkVersion is 26 (#19944) 2018-06-28 11:49:32 -07:00
js Fix controlled <TextInput> on iOS when inputting in Chinese/Japanese 2018-07-30 08:01:10 -07:00
.gitignore iOS OSS: check in the Podfile.lock 2018-04-13 17:33:23 -07:00
Podfile iOS OSS cocoapods: removed deps on RCTFabric for now 2018-05-24 14:57:55 -07:00
Podfile.lock iOS OSS cocoapods: removed deps on RCTFabric for now 2018-05-24 14:57:55 -07:00
README.md iOS OSS: added CocoaPods setup to RNTester and fix up the podspecs 2018-04-12 16:11:33 -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 iOS with CocoaPods

Similar to above, you can build the app via Xcode with help of CocoaPods.

  • Install CocoaPods
  • Run cd RNTester; pod install
  • Open the generated RNTesterPods.xcworkspace (this is not checked in). Do not open RNTesterPods.xcodeproj directly.

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).