react-native-cmd v1.0.3

react-native-cmd

Getting started

$ npm install react-native-cmd --save

Mostly automatic installation

$ react-native link react-native-cmd Notes: If you encounter this issue when you do react-native link: Error: Cannot find module 'asap/raw', manually change your node_modules/promise/package.json, search asap, Change ~2.0.3 to ~2.0.6, and do npm install again. Then you should be good to go.

Manual installation

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.decentralchat.reactnative.RNReactNativeCmdPackage; to the imports at the top of the file
• Add new RNReactNativeCmdPackage() to the list returned by the getPackages() method

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

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

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

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

Usage

import RNReactNativeCmd from 'react-native-cmd';
type Props = {};
export default class App extends Component<Props> {
  constructor() {
    super();
    this.state = {
      textValue: "init state"
    }
    this.onPressExecuteCmd = this.onPressExecuteCmd.bind(this); //bind this
  }
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>{this.state.textValue}</Text>
        <Button onPress={this.onPressExecuteCmd} title='EXECUTECMD'/>
      </View>
    );
  }
  async onPressExecuteCmd() {
    let resultStr = await RNReactNativeCmd.executeCmd('logcat -d');
    console.log("react-native-cmd resultStr length:", resultStr.length, ",type is:", typeof resultStr);
    let substr = resultStr.substring(resultStr.length - 50, resultStr.length);
    this.setState({textValue:substr}); //set the last 50 characters to textValue
  }
}

Notes

If the command result exceed 100Kbytes, only the last 100Kbytes size of string will be returned.