Fetch Location Name from Coordinates?

Question

I have already Fetched the name of location through coordinates.

with this code

    reverseGeocoder = [[MKReverseGeocoder alloc] initWithCoordinate:newLocation.coordinate];
    reverseGeocoder.delegate = self;
    [reverseGeocoder start];

here newLocation having my current location

and reverseGeocoder is the type of MKReverseGeocoder.

I also add the framework MapKit and add delegate MKReverseGeocoderDelegate.

and define this delegate in .m file

-(void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark
{...}

when we start this delegate and get the location with (MKPlacemark*)placemark after that i show this with in an AlertView in above delegate method or any other user defined method like:

[[[[UIAlertView alloc] initWithTitle:@"Place" 
message:[[[NSString alloc] initWithFormat:@"%@",placemark] autorelease] 
delegate:self 
cancelButtonTitle:@"Okay" 
otherButtonTitles:nil] autorelease] show];

Problem is that my alert view is appeared again and again in every second.

so please let me know how to stop the reverseGeocoder or how i can see this alert view just once.

thanx in advance.

yes this code is showing my current location, but its shows alert view in every second. — Chander Shakher Ghorela - Guru, Feb 09 '12 at 07:50
because you current location update that's why this problem was raised. please stop to update your current location. or use a bool variable. [locationManager stopUpdatingLocation]; // locationManager is your CLLocationManager — Dipen Chudasama, Feb 09 '12 at 08:17
@user994813 assume that we stop locationManager and in future if we agin want to update location but don't want to get the location name we want to get only coordinates. than what to do??? — Chander Shakher Ghorela - Guru, Feb 09 '12 at 08:51
just simple you add one bool variable like isalert = FALSE; then whenever you call alertview just check if(!isalert) {// display alert view and dont forget isalert =TRUE} else {//nothing} so next time it get true so alertview not call. — Dipen Chudasama, Feb 09 '12 at 09:15
what to do if we again want to see this alertview. with your condition it is shown only once. — Chander Shakher Ghorela - Guru, Feb 09 '12 at 09:20

Deepesh · Accepted Answer · 2012-02-09T09:21:06.303

1

This problem is create , Because you have every time new location , this problem is remove from two way... 1) use distance condition between two location ...and when your distance is greater then a particular distance then you see alert view.....

2)if use want to see alert once time then use this code...

int count = 0;
-(void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark
{

.......
if(count == 0)
{
[[[[UIAlertView alloc] initWithTitle:@"Place" 
message:[[[NSString alloc] initWithFormat:@"%@",placemark] autorelease] 
delegate:self 
cancelButtonTitle:@"Okay" 
otherButtonTitles:nil] autorelease] show];

count ++;

}
}

3)concept

NSString *previousloaction;/// use like global variable... NSString *currentloaction;/// use like global variable...

  -(void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark
    {
    currentloaction=placemark;
    .......
   if(![previousloaction isEqucaltoString: currentloaction])
    {
    [[[[UIAlertView alloc] initWithTitle:@"Place" 
    message:[[[NSString alloc] initWithFormat:@"%@",placemark] autorelease] 
    delegate:self 
    cancelButtonTitle:@"Okay" 
    otherButtonTitles:nil] autorelease] show];

   previousloaction =currentloaction;

    }
    }

edited Feb 09 '12 at 09:21

answered Feb 09 '12 at 07:53

Deepesh

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if You are any problem then see this url (i have use this conecpt )http://stackoverflow.com/questions/1382900/how-to-retrive-users-current-city-name – Deepesh Feb 09 '12 at 08:06
i have seen this link, they have value in NSSTring *city; but they are not displaying that anywhere. – Chander Shakher Ghorela - Guru Feb 09 '12 at 08:48
if count is incremented and in future if i again want to get the name of location how is it possible??? – Chander Shakher Ghorela - Guru Feb 09 '12 at 08:49
if You want to again location in alert view then use my first concept – Deepesh Feb 09 '12 at 09:12
next concept that you save location ..when again location name get then check the previous location to current location when both location is not name then count==0 use – Deepesh Feb 09 '12 at 09:15
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/7489/discussion-between-user1186899-and-chander-shakher-ghorela-guru) – Deepesh Feb 09 '12 at 09:22

Fetch Location Name from Coordinates?

1 Answers1