huiliao-app/rn-wechat/app/views/EmojiView.js

import React, {Component} from 'react';
import Global from '../utils/Global';
import Smiley from '../utils/Smiley';

import {Dimensions, Image, StyleSheet, View, ViewPagerAndroid,} from 'react-native';

const {width} = Dimensions.get('window');

export default class EmojiView extends Component {
  render() {
    return (
      <ViewPagerAndroid
        style={styles.viewPager}
        initialPage={0}>
        <View style={styles.pageStyle}><Page index={0}/></View>
        <View style={styles.pageStyle}><Page index={1}/></View>
        <View style={styles.pageStyle}><Page index={2}/></View>
      </ViewPagerAndroid>
    );
  }
}

class Page extends Component {
  render() {
    var page = [];
    for (var j = 0; j < 3; j++) {
      var row = [];
      for (var i = 0; i < 7; i++) {
        if (i == 6 && j == 2) {
          row.push(
            <View key={i}
                  style={{flex: 1, justifyContent: 'center', alignItems: 'center', paddingTop: 10, paddingBottom: 10,}}>
              <Image source={Smiley.data[105]} style={styles.emojiDelIcon}/>
            </View>
          );
        } else {
          row.push(
            <View key={i}
                  style={{flex: 1, justifyContent: 'center', alignItems: 'center', paddingTop: 10, paddingBottom: 10,}}>
              <Image source={Smiley.data[i * 7 + j + this.props.index * 20]} style={styles.emojiIcon}/>
            </View>
          );
        }
      }
      page.push(
        <View key={"row" + j} style={{flexDirection: 'row', height: Global.emojiViewHeight / 3}}>
          {row}
        </View>
      );
    }
    return (
      <View>{page}</View>
    );
  }
}

const styles = StyleSheet.create({
  viewPager: {
    width: width,
    height: Global.emojiViewHeight,
    backgroundColor: '#F4F4F4',
  },
  pageStyle: {
    width: width,
    paddingLeft: 5,
    paddingRight: 5,
  },
  emojiIcon: {
    width: 30,
    height: 30,
  },
  emojiDelIcon: {
    width: 30,
    height: 24,
  }
});