Push and Pop VC based on Sting Selection

Push to View Controller  based on String 

A ===>VC

.M File

-(void) push

{

VCName *vcobj=[[VCName alloc]initWithNibName:@"VCName" bundle:nil];

 [vcobj setPageString:@"SelectVC"];

    [self.navigationController vcobj animated:YES];

// Example

ArriveTicketViewController *arrivelView=[[ArriveTicketViewController alloc]initWithNibName:@"ArriveTicketViewController" bundle:nil];

 [arrivelView setPageString:@"SelectVC"];

    [self.navigationController pushViewController:arrivelView animated:YES];

}

B ====> VC

.h File

{

NSString *pageString;

}

@property(nonatomic,strong) NSString *pageString;

.M File

@synthesize pageString;

if([self.pageString isEqualToString:@“SelectVC”])

   {

     // perform action

     

   }

Poping the ViewController

-(void)PopToVC

{

    for (UIViewController *viewcontroller in [self.navigationController viewControllers])

    {

        if ([viewcontroller isKindOfClass:[VCName class]])

        {

            VCNameobj =(VCName *)viewcontroller;

            VCNameobj.pageString=@"SelectVC";

            [self.navigationController popToViewController:viewcontroller animated:YES];

        }

    }

}

Getting Current Location

.h file

    BOOL didFindLocation;

.m file

- (void)viewDidLoad

  [self startFindLocation];

-(void)startFindLocation

{

    self.didFindLocation=NO;

    locationManager = [[CLLocationManager alloc] init];

    locationManager.delegate = self;

    locationManager.desiredAccuracy = kCLLocationAccuracyBest;

    [locationManager startUpdatingLocation];

}

#pragma mark Map Current Location=========================

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error

{

//    UIAlertView *errorAlert = [[UIAlertView alloc]

//                               initWithTitle:@"Error" message:@"Failed to Get Your Location" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];

//    [errorAlert show];

}

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation

{

    

    CLLocation *currentLocation = newLocation;

    

    if (!self.didFindLocation)

    {

        self.didFindLocation = YES;

        [locationManager stopUpdatingLocation];

       self.longitude = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.longitude];

        self.latitude = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.latitude];

       NSLog(@"strLongitude===%@",self.longitude);

        

        NSLog(@"strLatitude===%@",self.latitude);

    }

    

   

}

NULL Checking For Webservices

#pragma mark ======== Null Checking for web services ===============

+(id)checkForNull:(id)value

{

    NSString *valueString = [NSString stringWithFormat:@"%@",value];

    

    id objectString = @"";

    

    if (![valueString isEqualToString:@"(null)"] && ![valueString isEqualToString:@"<null>"] && valueString.length != 0)

        return value;

    

    return objectString;

}

EX

 [localTrendsData setPhone_number:[self checkForNull:[currentLocalTrends valueForKey:@"phone_number"]]];

            

            [localTrendsData setUser_id:[self checkForNull:[currentLocalTrends valueForKey:@"user_id"]]];

            

            [localTrendsData setCategoryNameArray:[self checkForNull:[currentLocalTrends valueForKey:@"categories"]]];