我正在尝试启用panResponder以拖放模式在屏幕上移动组件。但是，必须通过此类元素上的longPress启动此拖放操作。
longPress会捕获该事件，因此当panResponder启用onStartShouldSetPanResponder => this.state.panEnabled时，我们需要再次按下。
我想触发原生事件，或者，无需再次按下即可激活拖动。是否可以重新发出原生事件？我们可以以任何方式将它传递给panResponder吗？
谢谢！
答案 0 :(得分：0)
我在没有使用panResponder的情况下工作，而只是使用longTouch（虽然效果与import React, { Component } from 'react';
import {
View,
PanResponder
} from 'react-native';
const LONGPRESS_TIMER = 300;
class DraggableComponent extends Component {
constructor() {
super();
this.timer = null;
this.state = {
canMove: false
}
this._panResponder = this.setUpPanResponder();
}
setUpPanResponder() {
const self = this;
return PanResponder.create({
onStartShouldSetPanResponder: (evt, gestureState) => true,
onStartShouldSetPanResponderCapture: (evt, gestureState) => true,
onMoveShouldSetPanResponder: (evt, gestureState) => true,
onMoveShouldSetPanResponderCapture: (evt, gestureState) => true,
onPanResponderGrant: (evt, gestureState) => {
self.timer = setTimeout(() => {
self.setState({canMove: true});
}, LONGPRESS_TIMER);
},
onPanResponderMove: (evt, gestureState) => {
if(this.state.canMove) {
console.log('moving', gestureState);
// code to move view here
}
},
onPanResponderTerminationRequest: (evt, gestureState) => true,
onPanResponderRelease: (evt, gestureState) => {
clearTimeout(self.timer);
self.setState({canMove: false});
}
});
}
render() {
return <View
style={{
width: 100,
height: 100,
backgroundColor: this.state.canMove ? 'green' : 'blue'}}
{...this._panResponder.panHandlers} />
}
}
相同），请看一下：
LONGPRESS_TIMER您可以通过更改var currentScript = document.currentScript;
setInterval(function(){
var fullUrl = currentScript.src;
console.log(fullUrl)
},2000);
const来调整触发“canMove”状态所需的时间，希望它有所帮助！