@luisfernando-rf apologies for taking time to respond. I had to remove quite a
bit of my other logic that I had in place and is not relevant. Let me know if
you need assistance with the below, hopefully it would be self explanatory.
//declare before constructor
locationLastUpdateTime = null
locationMinUpdateFrequency = 5 * 1000 //~5s between user location updates
private watchLocation;
myPositionMarker = null;
toggleLocationTrace() {
try {
this.watchLocation = this.geolocation.watchPosition(options)
.filter((p) => p.coords !== undefined) //Filter Out Errors
.subscribe(position => {
console.log('position::', position, 'L:', position.coords.longitude
+ ' ' + position.coords.latitude);
//only continue if its time to check
let now = new Date();
let duration: number
try {
duration = now.getTime() - this.locationLastUpdateTime.getTime()
} catch (error) {
duration = 999999999
}
if (this.locationLastUpdateTime == null || duration >=
this.locationMinUpdateFrequency) {
console.log('update is needed.::', duration)
let newPosition = { lat: position.coords.latitude, lng:
position.coords.longitude }
if (this.myPositionMarker !== null) {
this.myPositionMarker.setPosition(newPosition);
if (this.followUserPosition == true) {
this.map.moveCamera({
target: newPosition,
//'zoom': 18,
//'bearing': 140
});
}
} else {
//create the marker
this.map.addMarker(
{
icon: 'red',
title: 'me',
//animation: google.maps.Animation.DROP,
draggable: false,
position: newPosition
})
.then(marker => {
this.myPositionMarker = marker
console.log('my marker::', this.myPositionMarker)
});
}
this.locationLastUpdateTime = now;
} else {
//console.log('ignore position update::', duration);
}
});
} catch (error) {
console.log('unable to watch current location::', error)
}
}
[ Full content available at:
https://github.com/apache/cordova-plugin-geolocation/issues/115 ]
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