我有一个传单,用L.map(‘mapelement’)调用.问题是,如果我单击“隐藏”传单地图的按钮,然后再次单击该按钮以显示,传单地图不会显示.但是,当我在创建地图之前在链接函数中放入setTimeout并将其设置为2秒时,每次都会显示地图(尽管我必须等待2秒).有没有更好的替代方法在我的自定义“leaflet-map”指令中使用$timeout来显示和隐藏？
解决方法
我创建了一个简单的传单映射指令示例,但没有看到任何代码,而是通过ng-show切换地图的显示.它没有任何$超时工作.如果没有看到任何代码或者知道如何切换地图的显示,很难诊断出问题出在哪里.
angular.module('demo',[])
.directive('leafletMap',function() {
return {
restrict: 'E',scope: {
mapOptions: '&'
},template: '<div><button ng-click="toggleShow()">Toggle Map</button><div class="demo-map" ng-show="isShown"></div></div>',link: function(scope,elem,attrs) {
// Find element to bind to map
var mapElem = elem.children().find('div')[0],// get map options from isolate scope
mapOptions = scope.mapOptions();
// State of hide/show
scope.isShown = true;
// Create Map.
var map = L.map(mapElem,mapOptions);
// Just taken from leaflet example
L.tileLayer('https://api.tiles.mapBox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpandmbXliNDBjZWd2M2x6bDk3c2ZtOTkifQ._QA7i5Mpkd_m30IGElHziw',{
maxZoom: 18,attribution: 'Map data © <a href="http://openstreetmap.org">OpenStreetMap</a> contributors,' +
'<a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>,' +
'Imagery © <a href="http://mapBox.com">MapBox</a>',id: 'mapBox.streets'
}).addTo(map);
// method to toggle the shown/hidden state of map
scope.toggleShow = function() {
scope.isShown = !scope.isShown;
};
// cleanup on element destroy
elem.on('$destroy',function() {
map.remove();
});
}
};
})
.controller('DemoController',function() {
this.mapOptions = {
center: [51.505,-0.09],zoom: 13
};
});
.demo-map {
height: 500px;
}
<script src="//cdn.leafletjs.com/leaflet/v0.7.7/leaflet.js"></script> <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <link rel="stylesheet" href="//cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css" /> <div ng-app="demo" ng-controller="DemoController as ctrl"> <leaflet-map map-options="ctrl.mapOptions"></leaflet-map> </div>
