导航自定义滑动

data: {
latitude2: 22.817002,
longitude2: 113.366543,
map2: [{
  latitude: 22.817002,
  longitude: 113.366543,
  title: '地址：XXXX' 
}]
},

getMap2(){
   var height = '200px';
   if(height.indexOf("%")>0){
   		var str=height.replace("%","");
	    str= str/100;
	    App.WxService.getSystemInfo().then(data => {
	        this.setData({
	            mapHeight2: data.windowHeight*str+"px", 
	        })
	   })
   }else{
   		this.setData({
	        mapHeight2: height, 
	    })
   }
}