How to add click listener on polyline of google map

Ionic Framework ionic-v3
1

Hi All,

I add polyline to map and then add listener on it to monitor click event, but I tried ‘POLYLINE_CLICK’, ‘MAP_CLICK’, ‘OVERLAY_CLICK’, none of them works, how should I do this, thanks.

        this.mainMap.addPolyline({
            points: points,
            fillColor: '#19A2E9',
            strokeColor: '#2C9ED8',
            'width': 10,
            clickable: true

        }).then(tripPolygon => {

            **tripPolygon.on(GoogleMapsEvent.MAP_CLICK).subscribe(()=>{**
                console.log('clicked me !!!!');    
            });
     });
2

Use GoogleMapsEvent.POLYLINE_CLICK instead ofGoogleMapsEvent.MAP_CLICK

3

I tried but nothing captured

4

one thing is I should put evevt on map object or polyline object ? I mean I should do map.on（event,function）or polylineInstance.on(event,function)? thanks

5

tried so many things, but does not work.

Tried POLYLINE_CLICK, MAP_CLICK, OVERLAY_CLICK, but looks like nothing captured. where is wrong, any help, thanks.

        this.mainMap.addPolyline({
            points: points,
            fillColor: '#19A2E9',
            strokeColor: '#2C9ED8',
            'width': 10,
            clickable: true

        }).then(tripPolygon => {

            console.log('trip poly gon clickable is '+tripPolygon.getClickable());
            tripPolygon.on(GoogleMapsEvent.POLYLINE_CLICK).subscribe(()=>{
                console.log('clicked me !!!!');    
            });

});

6

Please share your project files on GitHub.

7

===========update , the following reply inforamtion is not right, need to test it further. =============

Hi mate, thanks for your kindly help.
I simplified my project and finally I found the real reason.

The reason is because on the polyLine there are too many points and most of time you click on the points but not polyline, so the POLYLINE_CLICK event can not be fired.

So which event I should capture when the POLYLINE CLICKED?thanks

try the code :

------------- only 3 points to make polyline , which is working------------------
let points = [{“lat”:-33.76869,“lng”:151.0368},{“lat”:-33.81477,“lng”:151.00173},{“lat”:-33.81467,“lng”:151.00127}];

                console.log(JSON.stringify(points));
                
                this.mainMap.addPolyline({
                    points: points,
                    fillColor: '#19A2E9',
                    strokeColor: '#2C9ED8',
                    'width': 10,
                    clickable: true
    
                }).then(tripPolygon => {
                        tripPolygon.on(GoogleMapsEvent.POLYLINE_CLICK).subscribe(()=>{
                            console.log('you clicked me ');    
                        });
                });

------------------- lots of points to make route smooth , but unable to capture the POLYLINE_CLICK-----------------

  let points = 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              
                console.log(JSON.stringify(points));
                
                this.mainMap.addPolyline({
                    points: points,
                    fillColor: '#19A2E9',
                    strokeColor: '#2C9ED8',
                    'width': 10,
                    clickable: true
    
                }).then(tripPolygon => {
                        tripPolygon.on(GoogleMapsEvent.POLYLINE_CLICK).subscribe(()=>{
                            console.log('you clicked me ');    
                        });
                });
8

I said Please share your project files on GitHub.

9

Hi mate,

Thanks for your help. As it is too complicate to make the project working if I share project to you . don’t want to waste your much time.

I debugged many times and finally I found the reason, I think the ‘geodesic’ does the trick if there are a lots of points. I have to set PolyLine options as true .