在Google Maps API v3中,他们声明我们需要在点击标记时打开infowindow:
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
});
现在我正在尝试使用js库在dart中复制它。到目前为止,我有这样的事情:
final google_maps = context['google']['maps'];
var myLatlng = [43.5, -6.5];
var center = new JsObject(google_maps['LatLng'], myLatlng);
var mapTypeId = google_maps['MapTypeId']['ROADMAP'];
var mapOptions = new JsObject.jsify({
"center": center,
"zoom": 8,
"mapTypeId": mapTypeId
});
var map = new JsObject(google_maps['Map'], [querySelector('#map-canvas'), mapOptions]);
var marker = new JsObject(google_maps['Marker'], [new JsObject.jsify({
'position': center,
'map': map,
'title': 'Hello World!'
})]);
var tooltip = '<div id="content">Info window coontent</div>';
var infowindow = new JsObject(google_maps['InfoWindow'], [new JsObject.jsify({
"content": tooltip
})]);
google_maps['event'].callMethod('addListener', [marker, 'click', () {
infowindow.callMethod('open',[map,marker]);
}]);
问题是我通过google_maps ['event']设置'addListener'方法,但是当我点击标记时,我得到NoSuchMethodError:
Closure call with mismatched arguments: function 'call'
NoSuchMethodError: incorrect number of arguments passed to method named 'call'
Receiver: Closure: () => dynamic
Tried calling: call(Instance of 'JsObject')
Found: call()
我知道有google_maps dart package,但我希望使用dart的js库与javascript api进行交互。
提前致谢。
答案 0 :(得分:6)
你的闭包没有参数。
() {
infowindow.callMethod('open',[map,marker]);
}
你只需要给出一个参数,如错误信息中所述:
(event) {
infowindow.callMethod('open',[map,marker]);
}