0
我有一個與PanResponder反應原生組件。我想拖動整個容器並指定所需的樣式。但我可以看到一個事實,那就是風格沒有得到更新;該視圖不會刷新。風格不更新內部組件
即使我使用componentDidMount()
方法並使用setTimeout更改背景顏色,樣式似乎不會重新呈現視圖。
在另一班上,我正在用PanResponder做同樣的事情並拖動以增加身高。它在那裏工作。什麼似乎是麻煩?
這是代碼。
'use strict';
var React = require('react-native');
var Dimensions = require('Dimensions');
var Story = require('./Story');
var {
View,
StyleSheet,
PanResponder
} = React;
// <Story data={data[0]} />
// {...this.panResponder.panHandlers}
var width = Dimensions.get('window').width;
var height = Dimensions.get('window').height;
var styles = {
wrapper: { flex: 1 },
container: { flex: 1, left: 0, width: width, height: height },
};
var StoryContainer = React.createClass({
componentWillMount: function(){
this.panResponder = PanResponder.create({
onStartShouldSetPanResponder: this.handleStartShouldSetPanResponder,
onMoveShouldSetPanResponder: this.handleMoveShouldSetPanResponder,
onPanResponderGrant: this.handlePanResponderGrant,
onPanResponderMove: this.handlePanResponderMove,
onPanResponderRelease: this.handlePanResponderEnd,
onPanResponderTerminate: this.handlePanResponderEnd,
});
},
componentDidMount: function(){
var that = this;
setTimeout(function(){
console.log('updating styles');
styles.container.backgroundColor = '#000000';
that.forceUpdate();
}, 4000);
},
render: function(){
var data = this.props.data;
return (
<View style={styles.container}>
<Story data={data[0]} />
</View>
)
},
handleStartShouldSetPanResponder: function(evt: Object, gestureState: Object){
return true;
},
handleMoveShouldSetPanResponder: function(evt: Object, gestureState: Object){
return true;
},
handlePanResponderGrant: function(evt: Object, gestureState: Object){
// return true;
},
handlePanResponderMove: function(evt: Object, gestureState: Object){
console.log(gestureState.dx);
styles.container.left = styles.container.left + gestureState.dx;
this.forceUpdate();
},
handlePanResponderEnd: function(evt: Object, gestureState: Object){
// end this sucker
}
});
module.exports = StoryContainer;
快速評論:樣式var未用StyleSheet.create({...})進行初始化。可能是解決方案嗎? – nicopasso