propChanger.js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 */
'use strict';

var React = require('react-native');
var {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  TouchableHighlight
} = React;

var Message = React.createClass({
  render: function() {
    return (
      <Text style={this.props.style}>{this.props.message}</Text>
    );
  }
})

var app = React.createClass({
  getInitialState: function() {
    return {changed: false};
  },

  _onClick: function() {
    console.log("called!");
    this.setState({changed: true});
  },

  render: function() {
    var msg = "initial props";
    if (this.state.changed) {
      msg = "Props change forced rerender";
    }

    return (
      <View style={styles.container}>
        <Message message={msg} />
        <TouchableHighlight style={styles.button} onPress={this._onClick}>
          <Text>Change Props</Text>
        </TouchableHighlight>
      </View>
    );
  }
});

var styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  button: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
    backgroundColor: "#1100aa",
    padding: 20
  },
});

AppRegistry.registerComponent('propChanger', () => app);