zakzheng / react-native-local-barcode-recognizer

The barcode recognizer for local image.

###rn-local-qrdecode

*** Still under development.

##Install:

#install:
npm install rn-local-qrdecode

#and link:
react-native link rn-local-qrdecode

or you may install manually.

##Usage: Here is the demo (may check the examples folder of source code as well)

import ...

import LocalBarcodeRecognizer from 'rn-local-qrdecode';


const imageBase64 = "data:image/jpeg;base64,/9j/4AA.......";

type Props = {};
export default class App extends Component<Props> {
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>React Native Local Barcode Recoginzer Demo</Text>
        <Text>Follow images to test:</Text>
        <Image source={{uri:imageBase64}} style={{width:width,height:width}}></Image>
          <Button onPress={()=>{
              this.recoginze();
          }} title={"Recognize"} />
      </View>
    );
  }

  recoginze = async ()=>{
	// Here is the demoe
     let result = await LocalBarcodeRecognizer.decode(imageBase64.replace("data:image/jpeg;base64,",""),{codeTypes:['ean13','qr']});
     alert(result);
  }

}
...
});

API

 let result = await LocalBarcodeRecognizer.decode(base64EncodeStringWithSchema,options);

Options

Only codeTypes supports currently Options:

name	desc
codeTypes	the codeFormat array, no default values,at last one of follow values needed: aztec ean13 ean8 qr pdf417 upc_e datamatrix code39 code93 interleaved2of5 codabar code128 maxicode rss14 rssexpanded upc_a upc_ean