LoadingMore.js
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/**
* Created by YQ on 2017/6/26.
*/
import React, {Component, PropTypes} from 'react';
/**
* @author YASIN
* @version [Android YASIN V01, ]
* @blog http://blog.csdn.net/vv_bug
* @description
* 屏幕工具类
* ui设计基准,iphone 6
* width:750
* height:1334
*/
import {ActivityIndicator, PixelRatio, Text, View} from 'react-native';
import Dimensions from 'Dimensions';
export var screenW = Dimensions.get('window').width;
export var screenH = Dimensions.get('window').height;
var fontScale = PixelRatio.getFontScale();
export var pixelRatio = PixelRatio.get();
export const DEFAULT_DENSITY = 2;
const w2 = 750 / DEFAULT_DENSITY;
const h2 = 1334 / DEFAULT_DENSITY;
/**
* 屏幕适配,缩放size
* @param size
* @returns {Number}
* @constructor
*/
function scaleSize(size) {
var scaleWidth = screenW / w2;
var scaleHeight = screenH / h2;
var scale = Math.min(scaleWidth, scaleHeight);
size = Math.round((size * scale + 0.5));
return size / DEFAULT_DENSITY;
}
export default class LoadingMore extends Component {
static propTypes = {
isLoading: PropTypes.bool
}
static defaultProps = {
isLoading: false
}
// 构造
constructor(props) {
super(props);
// 初始状态
this.state = {
isLoading: props.isLoading
};
}
render() {
if (this.state.isLoading) {
return (
<View
style={{flexDirection: 'row', alignSelf: 'center', alignItems: 'center', padding: scaleSize(10)}}>
<ActivityIndicator size={'small'} animating={true}
style={{width: scaleSize(15), height: scaleSize(30)}}
/>
<Text style={{marginLeft: scaleSize(15)}}>
正在加载...
</Text>
</View>
);
} else if (this.props.onLoading) {
return (
null
);
}
}
componentWillReceiveProps(nextProps) {
this.setState({
isLoading: nextProps.isLoading
});
}
}