react-native-device-clock-format

Determine whether the device is set to 12 or 24 hour time.

Add it to your project

1. Run npm install react-native-device-clock-format --save
2. Open your project in XCode, right click on Libraries and click Add Files to "Your Project Name"
3. Add libDeviceClockFormat.a to Build Phases -> Link Binary With Libraries.
4. Whenever you want to use it within React code now you can: var DeviceClockFormat = require('react-native-device-clock-format');

Example

'use strict';

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

var DeviceClockFormat = require('react-native-device-clock-format');

var SampleApp = React.createClass({
  getInitialState() {
    return { format: 'Unknown..' }
  },

  componentWillMount() {
    this.fetchTimeFormat();
  },

  fetchTimeFormat() {
    DeviceClockFormat.fetch((twelveHour, twentyFourHour) => {
      if (twelveHour) {
        this.setState({format: '12 hour'});
      } else {
        this.setState({format: '24 hour'});
      }
    });
  },

  render: function() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>
          {this.state.format}
        </Text>
        <TouchableOpacity onPress={this.fetchTimeFormat}>
          <Text style={styles.instructions}>
            Update time format
          </Text>
        </TouchableOpacity>
      </View>
    );
  }
});

var styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  },
});

AppRegistry.registerComponent('SampleApp', () => SampleApp);