Objective C - Convert DMS to LAT LONG (South and East) - ios

Question

Heads up, I'm an absolute newb when it comes to OBJ-C!
I'm currently putting together and IOS app and utilising pre-loaded data listings/locations from my client. The coordinates to each listing/location has are in DMS, eg
S:35 00.065
E:148 06.660
There are thousands of listings and I can't go and change this over for each one. I'm currently importing that data via a WordPress JSON API (WP REST API Plugin). The app I'm making pulls that JSON data in and populates accordingly.
The format is simply 'east' and south' from the JSON URL.
http://example.com/api/get_recent_posts/?custom_fields=name,east,south,image,address,type,Postend&page=%ld
I have no idea how to convert the east and south into lat and long for the code. Everything is ready to go except this predicament!
Everything I find on here leads to expired or dead links for their respective tutorials, in Javascript, PHP, or is reversing LAT LONG to DMS. :(
Thanks in advance!
--- EDIT WITH POSSIBLE ANSWER ---
Thanks to #ronak-chaniyara for the answer. Just having troubles implementing into current code. Existing code from template below:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSString *decodedText1 = [_restaurant.name stringByReplacingOccurrencesOfString:#"’" withString:#"'"];
NSString *decodedText = [decodedText1
stringByReplacingOccurrencesOfString:#"&" withString:#"&"];
self.title = _restaurant.type;
self.barname.text = decodedText;
self.address.text = _restaurant.location;
[[self navigationController] setNavigationBarHidden:NO animated:NO];
[self loadImageInNewThread];
NSString *htmlFile = [[NSBundle mainBundle] pathForResource:#"ht7" ofType:#"html"];
NSString* htmlString = [NSString stringWithContentsOfFile:htmlFile encoding:NSUTF8StringEncoding error:nil];
NSString *htmlString2 = [NSString stringWithFormat:htmlString,_restaurant.description];
self.webView.delegate=self;
[self.webView loadHTMLString:htmlString2 baseURL:nil];
_webView.opaque = NO;
_webView.backgroundColor = [UIColor clearColor];
self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:0.306 green:0.306 blue:0.306 alpha:1];
self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
[self.navigationController.navigationBar
setTitleTextAttributes:#{NSForegroundColorAttributeName : [UIColor whiteColor]}];
self.navigationController.navigationBar.translucent = NO;
self.EntityPlot.delegate = self;
CLLocationCoordinate2D coordinate1 = CLLocationCoordinate2DMake(_restaurant.lattitude, _restaurant.longditude);
EntityPlot *coordinate2 = [[EntityPlot alloc] initWithTitle:decodedText Location:coordinate1];
[self.EntityPlot addAnnotation: coordinate2];
CLLocationCoordinate2D annotationCoord;
annotationCoord.latitude = _restaurant.lattitude;
annotationCoord.longitude = _restaurant.longditude;
UIImage *image = [UIImage imageNamed:#"cream_pixels_#2X.png"];
self.uiView.backgroundColor = [UIColor colorWithPatternImage:image];
[_barplot setRegion:MKCoordinateRegionMake(annotationCoord, MKCoordinateSpanMake(.005, .005)) animated:YES];
[_barplot selectAnnotation:coordinate2 animated:YES];
_barplot.showsUserLocation = YES;
Me trying to implement:
//Pass string DMS for Lat and Long
- (double)DMSStringToDecimal:(NSString*)strDMS
{
// split the string
NSArray *arrSplit = [strDMS componentsSeparatedByString:#":"];
//direction
NSString *direction = [arrSplit objectAtIndex:0];
//degree
NSString *degreesString = [[[arrSplit objectAtIndex:1] componentsSeparatedByString:#" "] objectAtIndex:0];
NSArray *arrMinuteandSeconds=[[[[arrSplit objectAtIndex:1] componentsSeparatedByString:#" "] objectAtIndex:1] componentsSeparatedByString:#"."];
//minutes
NSString *minutesString = [arrMinuteandSeconds objectAtIndex:0];
//seconds
NSString *secondsString = [arrMinuteandSeconds objectAtIndex:1];
// convert degrees
double degrees = [degreesString doubleValue];
// convert minutes
double minutes = [minutesString doubleValue] / 60; // 60 degrees in a minute
// convert seconds
double seconds = [secondsString doubleValue] / 3600; // 60 seconds in a minute, or 3600 in a degree
// add them all together
double decimal = degrees + minutes + seconds;
// determine if this is negative. south and west would be negative values
if ([direction.uppercaseString isEqualToString:#"W"] || [direction.uppercaseString isEqualToString:#"S"])
{
decimal = -decimal;
}
return decimal;
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSString *decodedText1 = [_restaurant.name stringByReplacingOccurrencesOfString:#"’" withString:#"'"];
NSString *decodedText = [decodedText1
stringByReplacingOccurrencesOfString:#"&" withString:#"&"];
self.title = _restaurant.type;
self.barname.text = decodedText;
self.address.text = _restaurant.location;
[[self navigationController] setNavigationBarHidden:NO animated:NO];
[self loadImageInNewThread];
NSString *htmlFile = [[NSBundle mainBundle] pathForResource:#"ht7" ofType:#"html"];
NSString* htmlString = [NSString stringWithContentsOfFile:htmlFile encoding:NSUTF8StringEncoding error:nil];
NSString *htmlString2 = [NSString stringWithFormat:htmlString,_restaurant.description];
self.webView.delegate=self;
[self.webView loadHTMLString:htmlString2 baseURL:nil];
_webView.opaque = NO;
_webView.backgroundColor = [UIColor clearColor];
self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:0.306 green:0.306 blue:0.306 alpha:1];
self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
[self.navigationController.navigationBar
setTitleTextAttributes:#{NSForegroundColorAttributeName : [UIColor whiteColor]}];
self.navigationController.navigationBar.translucent = NO;
self.EntityPlot.delegate = self;
// location crap
NSString *latStr = [NSString stringWithFormat:htmlString,_restaurant.lattitude];
NSString *lonStr = [NSString stringWithFormat:htmlString,_restaurant.longditude];
double lat = [self DMSStringToDecimal:latStr]; //which gives lat=-35.018055555555556
double lon = [self DMSStringToDecimal:lonStr]; //which gives lon=148.28333333333333
// CLLocation *loc = [[CLLocation alloc] initWithLatitude:lat longitude:lon];
CLLocationCoordinate2D coordinate1 = CLLocationCoordinate2DMake(lat, lon);
EntityPlot *coordinate2 = [[EntityPlot alloc] initWithTitle:decodedText Location:coordinate1];
// CLLocationCoordinate2D coordinate1 = CLLocationCoordinate2DMake(_restaurant.lattitude, _restaurant.longditude);
// EntityPlot *coordinate2 = [[EntityPlot alloc] initWithTitle:decodedText Location:coordinate1];
[self.EntityPlot addAnnotation: coordinate2];
CLLocationCoordinate2D annotationCoord;
annotationCoord.latitude = lat;
annotationCoord.longitude = lon;
// annotationCoord.latitude = _restaurant.lattitude;
// annotationCoord.longitude = _restaurant.longditude;
UIImage *image = [UIImage imageNamed:#"cream_pixels_#2X.png"];
self.uiView.backgroundColor = [UIColor colorWithPatternImage:image];
[_barplot setRegion:MKCoordinateRegionMake(annotationCoord, MKCoordinateSpanMake(.005, .005)) animated:YES];
[_barplot selectAnnotation:coordinate2 animated:YES];
_barplot.showsUserLocation = YES;
}

Answer 1

May be you can do something like below, (from answer: https://stackoverflow.com/a/28545279/5575752):
NSString *latStr=#"S:35 00.065";
NSString *lonStr=#"E:148 06.660";
double lat = [self DMSStringToDecimal:latStr]; //which gives lat=-35.018055555555556
double lon = [self DMSStringToDecimal:lonStr]; //which gives lon=148.28333333333333
// Now create Location object
CLLocation *loc = [[CLLocation alloc] initWithLatitude:lat longitude:lon];
//Pass string DMS for Lat and Long
- (double)DMSStringToDecimal:(NSString*)strDMS
{
// split the string
NSArray *arrSplit = [strDMS componentsSeparatedByString:#":"];
//direction
NSString *direction = [arrSplit objectAtIndex:0];
//degree
NSString *degreesString = [[[arrSplit objectAtIndex:1] componentsSeparatedByString:#" "] objectAtIndex:0];
NSArray *arrMinuteandSeconds=[[[[arrSplit objectAtIndex:1] componentsSeparatedByString:#" "] objectAtIndex:1] componentsSeparatedByString:#"."];
//minutes
NSString *minutesString = [arrMinuteandSeconds objectAtIndex:0];
//seconds
NSString *secondsString = [arrMinuteandSeconds objectAtIndex:1];
// convert degrees
double degrees = [degreesString doubleValue];
// convert minutes
double minutes = [minutesString doubleValue] / 60; // 60 degrees in a minute
// convert seconds
double seconds = [secondsString doubleValue] / 3600; // 60 seconds in a minute, or 3600 in a degree
// add them all together
double decimal = degrees + minutes + seconds;
// determine if this is negative. south and west would be negative values
if ([direction.uppercaseString isEqualToString:#"W"] || [direction.uppercaseString isEqualToString:#"S"])
{
decimal = -decimal;
}
return decimal;
}
Do modifications as per your requirement.
Hope it will help:)