react-native-qrscanner-kit

基于react-native-camera

 增加扫描覆盖界面 ，扫描出结果后，不再继续解析二维码。通过调用shouldQR来再次开启继续解析二维码。

Getting started

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Requirements

1. JDK >= 1.7 (if you run on 1.6 you will get an error on "_cameras = new HashMap<>();")
2. With iOS 10 and higher you need to add the "Privacy - Camera Usage Description" key to the info.plist of your project. This should be found in 'your_project/ios/your_project/Info.plist'. Add the following code:

<key>NSCameraUsageDescription</key>
<string>Your message to user when the camera is accesseded for the first time</string>

<!-- Include this only if you are planning to use the camera roll -->
<key>NSPhotoLibraryUsageDescription</key>
<string>Your message to user when the photo library is accessed for the first time</string>

<!-- Include this only if you are planning to use the microphone for video recording -->
<key>NSMicrophoneUsageDescription</key>
<string>Your message to user when the microsphone is accessed for the first time</string>

Mostly automatic install with react-native

1. npm install react-native-camera@https://github.com/chinaczy/react-native-camera.git --save
2. npm install react-native-qrscanner-kit
3. react-native link react-native-camera

Manual install

iOS

1. npm install react-native-camera@https://github.com/lwansbrough/react-native-camera.git --save
2. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
3. Go to node_modules ➜ react-native-camera and add RCTCamera.xcodeproj
4. In XCode, in the project navigator, select your project. Add libRCTCamera.a to your project's Build Phases ➜ Link Binary With Libraries
5. Click RCTCamera.xcodeproj in the project navigator and go the Build Settings tab. Make sure 'All' is toggled on (instead of 'Basic'). In the Search Paths section, look for Header Search Paths and make sure it contains both $(SRCROOT)/../../react-native/React and $(SRCROOT)/../../../React - mark both as recursive.
6. Run your project (Cmd+R)

Android

1. npm install react-native-camera@https://github.com/lwansbrough/react-native-camera.git --save
2. Open up `android/app/src/main/java/[...]/MainApplication.java

• Add import com.lwansbrough.RCTCamera.RCTCameraPackage; to the imports at the top of the file
• Add new RCTCameraPackage() to the list returned by the getPackages() method. Add a comma to the previous item if there's already something there.

3. Append the following lines to android/settings.gradle:

   include ':react-native-camera'
   project(':react-native-camera').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-camera/android')

4. Insert the following lines inside the dependencies block in android/app/build.gradle:

   compile project(':react-native-camera')

Usage

import Scan from 'react-native-qrscanner-kit' ;
...
scanResult(data , callback){
    Alert.alert( "qrcode result " ,  data.data , [{text:"ok" , onPress:()=>callback()}],{cancelable:false}) ; 
  }
  render() {
    
    return (
      <View style={{flex:1 }}>
        <Scan
          
          onBarCodeRead={this.scanResult.bind(this)}
          />
        
      </View>
    );
  }
}

more about Camera go to