ios自定义点聚合缩放地图点会消失

onReady() {
this._mapContext = uni.createMapContext("around-food-map", this);

// 仅调用初始化，才会触发 on.("markerClusterCreate", (e) => {})  
this._mapContext.initMarkerCluster({  
  enableDefaultStyle: false, // 是否使用默认聚合样式  
  zoomOnClick: true,  
  gridSize: 50,  
});  

this._mapContext.on("markerClusterCreate", ({ clusters }) => {  
  this.updateClusters(clusters);  
});  

},

methods: {
updateClusters(clu) {
let clusterMarkers = [];
clu.forEach((cluster, index) => {
const {
center, // 聚合点的经纬度数组
clusterId, // 聚合簇id
markerIds, // 已经聚合了的标记点id数组
} = cluster;
let clusterObj = {
clusterId, //必须
...center,
width: 33,
height: 40,
iconPath: "../../static/index/cluster.png", // 如果label不能满足需求，可用图片
joinCluster: true, // 注意：不加此项 自定义样式不显示，
label: {
// 定制聚合簇样式
content: markerIds.length + "",
fontSize: 14,
color: "#ff9030",
width: 25,
height: 20,
bgColor: "transparent",
textAlign: "center",
anchorX: this.iosFlag ? 0 : -13,
anchorY: -34,
},
};
clusterMarkers.push(clusterObj);
});
// 添加聚合簇
this._mapContext.addMarkers({
markers: clusterMarkers,
clear: false, //是否先清空地图上所有的marker
});
},
}