微信小程序判断手机有没有定位的方法详解手机开发

var that = this; 
wx.getSystemInfo({ 
success(res) { 
var isopendingwei = res.locationEnabled; 
if(isopendingwei==false){ 
that.tc('清先开启手机GPS定位,然后重新刷新'); 
} 
 
 
 
 
} 
})