How to remove any MKPointAnnotation on button click

Question

I have a search bar with allows me to fetch Location, Latitude and Longitude. When i get the values, the map shows the annotation perfectly.

Problem : When i select another location, lat, long previous data remains there.

What i need : I want to remove that previous particular location when ever i click the search button.

Code :

double searchLAT = [_searchedLat doubleValue];
double searchLONG = [_searchedLong doubleValue];

MKUserLocation *userlocation = [[MKUserLocation alloc] init];
userlocation.coordinate = CLLocationCoordinate2DMake(searchLAT, searchLONG);

MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(userlocation.coordinate, 700000, 700000);
[self.mapView setRegion:[self.mapView regionThatFits:region] animated:YES];

MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
point.coordinate = CLLocationCoordinate2DMake(searchLAT,searchLONG);
[self.mapView addAnnotation:point];

is not clear `I want to remove that previous location` -- you want to clear previous all markers or particular location markers — Anbu.Karthik, Aug 01 '18 at 10:45
Check this: https://stackoverflow.com/questions/3027392/how-to-delete-all-annotations-on-a-mkmapview — Andreas Oetjen, Aug 01 '18 at 10:50
@HappilyHemu `[mapView removeAnnotation:YOUR_ANNOTATION_TO_REMOVE];` — Nirav Kotecha, Aug 01 '18 at 10:53
@HappilyHemu if you want to remove all then --> `[mapView removeAnnotations:mapView.annotations];` — Nirav Kotecha, Aug 01 '18 at 10:54
Possible duplicate of [How to delete all Annotations on a MKMapView](https://stackoverflow.com/questions/3027392/how-to-delete-all-annotations-on-a-mkmapview) — Stonz2, Aug 01 '18 at 14:16

score 0 · Answer 1 · answered Aug 06 '18 at 09:26

0

Do not initialize userlocation in the function. Make it global for your controller so only lat-long change but for MKUserLocation not allocate memory every time.

answered Aug 06 '18 at 09:26

Mirant

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How to remove any MKPointAnnotation on button click

1 Answers1