I have a working method that places Map Markers on a HERE map in Flutter
When an individual marker is pressed it pops up with a metadata box containing relevant data
Depending on which List type of marker is pressed I will trigger a different ShowDialog to show the correct data
I have a Flutter Gesture Handler that listens for taps and then reacts.
I need different _pickMapMarker*x* to be options (in 'Gesture Handler')depending on the list type of marker pressed
All markers are added to a list, List<MapMarker> _x when placed, there is list _mapMarkertype1, _mapMarkertype2
This is what I currently have. The issue is as follows... If there are 12 mapMarkers in the List the marker I click displays 12 pop-ups, all with the correct information, just duplicated 12 times (Or as many markers in List when button pressed)
I need to display just the info from the selected pop-up one time, in one pop-up
Here is the method (Which is by no means correct, just the nearest I have got. I think rather than contains, I need it the other way around, to check which list the tapped marker is in)
void _setTapGestureHandler() {
_hereMapController.gestures.tapListener = TapListener((Point2D touchPoint) {
for(MapMarker mapMarker in _mapMarkerList1) {
if (_mapMarkerList1.contains(mapMarker)) {
_pickMapMarker1(touchPoint);
}
}
for(MapMarker mapMarker in _mapMarkerList2) {
if (_mapMarkerList2.contains(mapMarker)) {
_pickMapMarker2(touchPoint);
}
});
}
Place marker
_hereMapController.mapScene.addMapMarker(mapMarker);
_mapMarkerList2.add(mapMarker);
}
Related
I have a couple of UIKit pop-up menu buttons with identical menu items on the same screen in a Swift app. The buttons are built by calling a function that uses an array of strings to create the list of menu items.
The problem is that depending on the button's vertical position on the screen, the menu items may appear in the order specified by the function, or reversed. If the button is in the upper half of the screen, the menu items are listed in the correct order. If the button is in the lower half of the screen the menu items are listed in reverse order.
I would prefer the menu items to appear in the same order regardless of the button's position on the screen. I could check the button location and have the menu creation function reverse the order, but that seems kind of clunky. I am hoping there's a cleaner way to override this behaviour.
The code and array used to create the button menus:
let buttonMenuItems = ["Spring","Summer","Autumn","Winter"]
func createAttributeMenu(menuNumber: Int)->UIMenu {
var menuActions: [UIAction] = []
for attribute in buttonMenuItems {
let item = UIAction(title: attribute) { action in
self.updateMenu(menuID: menuNumber, selected: attribute)
}
menuActions.append(item)
}
return UIMenu(title: "", children: menuActions)
}
The result is this:
Versions I'm using now in testing: Xcode 14.1, iOS 16.1, but I have seen this behaviour on earlier versions as well. (back to iOS 14.x)
Starting with iOS 16, there is a .preferredMenuElementOrder property that can be set on the button:
case automatic
A constant that allows the system to choose an ordering strategy according to the current context.
case priority
A constant that displays menu elements according to their priority.
case fixed
A constant that displays menu elements in a fixed order.
Best I can tell (as with many Apple definitions), there is no difference between .automatic and .priority.
From the .priority docs page:
Discussion
This ordering strategy displays the first menu element in the UIMenu closest to the location of the user interaction.
So, we get "reversed" order based on the position of the menu relative to the button.
To keep your defined order:
buttonNearTop.menu = createAttributeMenu(menuNumber: 1)
buttonNearBottom.menu = createAttributeMenu(menuNumber: 2)
if #available(iOS 16.0, *) {
buttonNearBottom.preferredMenuElementOrder = .fixed
buttonNearTop.preferredMenuElementOrder = .fixed
} else {
// out of luck... you get Apple's "priority" ordering
}
My App displays map and markers and it's working OK.
But, I would like that a specific marker (I choose programmatically) will be displayed above the others and it will be easy to find.
Is it the drawing order defined by the order in the markers Set -
markers: Set.from(markers),
I changed the order by remove and add the specific marker and it doesn't affect
In the following example I see marker #6 and I would like to see marker #1 that is behind
What can I do ?
I found a solution two options
Create a new markers list.
All except specific one with visible=false.
The specific one visible=true.
In this option App will display only the specific one
Future<void> setVisible(String _eMail, bool _visible) async {
final Marker marker = markers.where((element) => element.markerId == MarkerId(_eMail)).first;
if (_visible != marker.visible) {
markersVisible.add(marker.copyWith(visibleParam: !marker.visible,));
} else {
markersVisible.add(marker.copyWith(visibleParam: marker.visible,));
}
}
Using Alpha.
All except specific Alpha=0.1
The specific one Alpha=1
And add the specific one to markers list at the end.
Future<void> setAlpha(String _eMail, double _alpha) async {
final Marker marker = markers.where((element) => element.markerId == MarkerId(_eMail)).first;
markersVisible.add(marker.copyWith(alphaParam:_alpha ));
}
After creating the new markers list, update display
setState(() {
markers = markersVisible;
markersVisible = [];})
My solution after more than 2 hours.
I think it is difficult but it is easy. :)
Add a zIndex property to your model;
Set default zIndex is 0.5;
Set the zIndex of the marker you want to be above all the rest is 1.0.
It is easy enough to get the lat lng of a map click using something like:
map.on('click', function (e) {
coords= e.latlng.lat + ", " + e.latlng.lng;
});
But if there are shapes on the map the function doesn't get called if you click a place covered by a shape.
Ultimately I want to produce a popup window triggered when a shape is clicked and populated with information based on lat/long.
Welcome to SO!
You could bind your event listener on your shapes as well (possibly through an L.FeatureGroup to avoid having to bind to each individual shape), and you can even use that event listener to fire the "click" event on the map as well.
var shapes = L.featureGroup().addTo(map);
shapes.addLayer(/* some vector shape */); // As many times as individual shapes
shapes.on("click", function (event) {
shapecoords.innerHTML = event.latlng.toString();
map.fire("click", event); // Trigger a map click as well.
});
Demo: http://jsfiddle.net/ve2huzxw/40/
How can I add a mouse over pop up on leaflet.js marker . the pop up data will be dynamic.
I have a service which returns a lat & lon positions which will mark on a map.
I would require a popup on mouse over a marker . the event should send the lat and long position for ex to : http://api.openweathermap.org/data/2.5/weather?lat=40&lon=-100
the data from service should be in popup content.
I have tried but cant build the pop up content dynamically each marker
Please do the needful.
below is the code i have used for markers statesdata is array which stores the lat and longitude values
for ( var i=0; i < totalLength1; i++ ) {
var LamMarker = new L.marker([statesData1[i].KK, statesData1[i].LL]).on('contextmenu',function(e) {
onClick(this, i);
}).on('click',function(e) {
onClick1(this, i)
});
marker_a1.push(LamMarker);
map.addLayer(marker_a1[i]);
on click we call click1 function on context of marker we call click function
How can i add a pop on mouse over passing lat and long from the above code?
Attaching a popup to a marker is fairly easy. It is done by calling the bindPopup method of your L.Marker instance. Per default a popup opens on the click event of the L.Marker instance and closes on the click event of your L.Map instance. Now if you want to do something when a popup opens you can listen to the popupopen event of your L.Map instance.
When you want fetch external data in the background on the popupopen event that is usually done via XHR/AJAX. You can write your own logic or use something like jQuery's XHR/AJAX methods like $.getJSON. Once you receive response data you can then update your popup's content.
In code with comments to explain further:
// A new marker
var marker = new L.Marker([40.7127, -74.0059]).addTo(map);
// Bind popup with content
marker.bindPopup('No data yet, please wait...');
// Listen for the popupopen event on the map
map.on('popupopen', function(event){
// Grab the latitude and longitude from the popup
var ll = event.popup.getLatLng();
// Create url to use for getting the data
var url = 'http://api.openweathermap.org/data/2.5/weather?lat='+ll.lat+'&lon='+ll.lng;
// Fetch the data with the created url
$.getJSON(url, function(response){
// Use response data to update the popup's content
event.popup.setContent('Temperature: ' + response.main.temp);
});
});
// Listen for the popupclose event on the map
map.on('popupclose', function(event){
// Restore previous content
event.popup.setContent('No data yet, please wait...');
});
Here's a working example on Plunker: http://plnkr.co/edit/oq7RO5?p=preview
After comments:
If you want to open the popup on hover instead of click you can add this:
marker.on('mouseover', function(event){
marker.openPopup();
});
If you want to close the popup when you stop hovering instead of map click add this:
marker.on('mouseout', function(event){
marker.closePopup();
});
Here's an updated example: http://plnkr.co/edit/wlPV4F?p=preview
I got fed up with fighting with leaflet's built in functionality. The first thing I did was use the alt option to assign a key to the marker:
var myLocation = myMap.addLayer(L.marker(lat,lng],{icon: icon,alt: myKey}))
The next thing was assign an id using this alt and a title via jQuery (why you can't do that by default irritates me):
$('img[alt='+myKey+']').attr('id','marker_'+myKey).attr('title',sRolloverContent)
Then, I used jQuery tooltip (html will only render this way):
$('#marker_'+myKey).tooltip({
content: sRolloverContent
})
Also, by using the jQuery tooltip instead of the click-only bindPopup, I am able to fire the tooltip from my list, where the row has a matching key id:
$('.search-result-list').live('mouseover',function(){
$('#marker_'+$(this).attr('id')).tooltip('open')
})
$('.search-result-list').live('mouseout',function(){
$('#marker_'+$(this).attr('id')).tooltip('close')
})
By adding the id, I can easily use jQuery to do whatever I want, like highlight a list of locations when the marker is hovered:
$('#marker_'+iFireRescue_id).on('mouseover',function(){
('tr#'+getIndex($(this).attr('id'))).removeClass('alt').removeClass('alt-not').addClass('highlight')
})
$('#marker_'+myKey).on('mouseout',function(){
$('tr#'+getIndex($(this).attr('id'))).removeClass('highlight')
$('#search-results-table tbody tr:odd').addClass('alt')
$('#search-results-table tbody tr:even').addClass('alt-not')
})
I am passing a latlng from a link on another page to my map. My map has the markers based on this latlng. So what I am passing is exactly what the map markers are using to show on the map.
var hash = window.location.hash;
var hashless = hash.replace("#", "");
var ll = hashless.split(",", 2);
map.setView(new L.LatLng(ll[0], ll[1]), 14);
This is working great, but I am struggling at getting the marker to show it's infowindow. I would like only the link clicked on to be the marker that is showing it's popup. I am able to zoom right to the marker, but not able to get the popup to work in a reasonable way.
I have tried a few things, but map.getBounds() seems to be the one I should be working with, unless you can ID a marker based on Lat/Lng. Can you?
I am using bounds in the map.on function.... but none of the events seems to really work well. Originally thought LOAD would do it, but no results... viewreset, mousemove, etc... all show the popup in this simple function, but it is not really any good as it flickers etc... when moving things around:
map.on('viewreset', function () {
// Construct an empty list to fill with onscreen markers.
console.log("YA");
var inBounds = [], bounds = map.getBounds();
datalayer.eachLayer(function (marker) {
if (bounds.contains(marker.getLatLng())) {
inBounds.push(marker.options.title);
marker.openPopup();
}
});
});
How can I set the marker.openPopup() from my link to the current marker at that lat/lng passed to it?