uniapp全局可拖动悬浮球

yuanqiu(){
var that=this;
var kuan=375
var gao=667
uni.getSystemInfo({
success: function (res) {
kuan=res.windowWidth
gao=res.windowHeight
}
});
var view = new plus.nativeObj.View('yspc',
{top:'66%',left:(kuan-70)+'px',height:'54px',width:'54px',dock:'right',opacity:0.5},
[
{tag:'rect',id:'rect',color:'#3D92FB',rectStyles:{radius:"54px"},position:{top:'0px',left:'0px',width:'100%',height:'54px'}},
{tag:'img',id:'img',src:'_www/static/xyyth.png',position:{top:'6px',left:'14px',width:'26px',height:'26px'}},
{id:'wula',tag:'font',text:'00:01',RectStyles:{radius:"30px"},textStyles:{size:'12px',color:"#FFFFFF"},position:{top:'28px',left:'0px',width:'100%',height:'20px'}}
]);
view.drawRect({color:'rgba(0,0,0,0)',borderWidth:'0px',radius:'30px'},
{top:'0px',left:'0px',width:'100%',height:'100%'});
view.show();
var xxx=0
var yyy=0
var xxx0=0
var yyy0=0
view.addEventListener("touchstart", function(event){
//console.log(event)
xxx= event.clientX
yyy=event.clientY
xxx0=event.pageX
yyy0=event.pageY
//view.setStyle({opacity:1});
if(that.chuinter){

clearInterval(that.chuinter)
}

that.chunum=0
// console.log(that.chunum)
that.chuinter= setInterval(function(){
that.chunum++
//console.log(that.chunum)
},100)
}, false);
view.addEventListener("touchend", function(event){
//console.log(event)
//console.log(that.chunum)
//console.log(Math.abs(event.pageX-xxx0))
//console.log(Math.abs(event.pageY-yyy0))
if(Math.abs(event.pageX-xxx0)<5&&Math.abs(event.pageY-yyy0)<5&&that.chunum<4){
console.log('跳页')
}
if(that.chuinter){
clearInterval(that.chuinter)
}
that.chunum=0

}, false);
// view.setStyle({opacity:1});
view.addEventListener("touchmove", function(event){
//console.log(event)

if(event.screenX-xxx>kuan-74){
var xkuan=kuan-74
}else if(event.screenX-xxx<=0){
var xkuan=0
}else{
var xkuan=event.screenX-xxx
}
if(event.screenY-yyy>gao-60){
var xgao=gao-60
}else if(event.screenY-yyy<=0){
var xgao=0
}else{
var xgao=event.screenY-yyy
}

view.setStyle({
top: xgao + 'px',
left: xkuan+ 'px'
});


}, false);
/*var ss=0
var vinter= setInterval(function(){
ss++
view.draw([
{id:'wula',tag:'font',text:ss,RectStyles:{radius:"30px"},textStyles:{size:'12px',color:"#FFFFFF"}}
]);
},1000)
setTimeout(function(){
view.close();
clearInterval(vinter)
},5000)*/
},