好的，谢谢，现在可以了

onShow: function() { var self = this; if (key1) { if (timer) { clearInterval(timer); }; console.log('show'); self.shishiyundong('show'); /// shishiyundong: function(kr) { if (kr.type == 'tap') { kr = 'yundong'; } var that = this; var objj; timer = setInterval(function() { wx.getLocation({ type: "gcj02", success: function(res) { // console.log(res); dangqian = res; objj = { latitude: dangqian.latitude, longitude: dangqian.longitude }; plll.push(objj); console.log(objj, plll, kr); //设置polyline属性，将路线显示出来 that.setData({ polyline: [{ points: plll, color: '#000000', width: 2, }], marker: [{ markerId: 0, iconPath: '../image/wz.png', longitude: objj.longitude, latitude: objj.latitude, width: 30, height: 30, }], }); }, fail: function(res) {} }); }, 1000); },