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Webservice Using NSURLSession

ViewController.h
//
//  ViewController.h
//  WebSrvExample
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (strong, nonatomic) IBOutlet UILabel *locationInfo;

@end

ViewController.m

//
//  ViewController.m
//  WebSrvExample
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize locationInfo;

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    /*
     https://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&key=AIzaSyAAKb5lBsDLrS-JxQn9Z38G2bEpF69MuPE
     */
    
    NSURL *url = [NSURL URLWithString:@"https://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&key=AIzaSyAAKb5lBsDLrS-JxQn9Z38G2bEpF69MuPE"];
    /*
    NSString *payLoad = @"address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&key=AIzaSyAAKb5lBsDLrS-JxQn9Z38G2bEpF69MuPE";
    NSString *strLen = [NSString stringWithFormat:@"%ld",[payLoad length]];
    */
    
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:240];
    
    [request setHTTPMethod:@"GET"]; //POST
    
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    //Applicable if HTTP POST
    /*
     [request setValue:strLen forHTTPHeaderField:@"Content-Length"];
    
    [request setHTTPBody:payLoad];
     */
    
    NSURLSession * session = [NSURLSession sharedSession];
    NSURLSessionTask *sessionTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *urlResponse, NSError *error){
        NSLog(@"%@",@"block called");
        
        NSHTTPURLResponse * response = (NSHTTPURLResponse *)urlResponse;
        
        if ([response statusCode] == 200){
        //valid response
            NSError *error = nil;
            NSDictionary * responseDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
            //NSLog(@"%@",responseDic);
            
            NSArray *resultArray = [responseDic objectForKey:@"results"];
            
            for(int i = 0; i< [resultArray count]; i++){
               
                //NSLog(@"%@",[resultArray objectAtIndex:i]);
            
            }
            
            NSDictionary *resultObj = [resultArray objectAtIndex:0];
            
            NSLog(@"The location is %@",[resultObj objectForKey:@"formatted_address"]);
            [locationInfo setText:[resultObj objectForKey:@"formatted_address"]];
            
        }else{
        // No result or page can not be found
        }
        
    }];
    
    [sessionTask resume];
    NSLog(@"%@",@"Will be Called First");
    
    
    
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

iOS

2017-12-19 00:07:26
1) CoreData - UIDatePicker - Part2 - Final
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2) CoreData - UIDatePicker - Part1
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3) Shopping List App - Swift Part 2 - ActionSheet
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4) Shopping List App - Swift Part 1
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5) Swift - Introduction - WebService
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6) Shopping List IOS App - Part 2
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7) Shopping List IOS App - Part 1
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8) Shopping List IOS App - API Calls
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9) Delegate - Protocols - WebService
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10) NSMutableArray - NSMutableDictionary - TableViewController
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11) UITableViewController
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12) Segue Forward And Unwind
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13) GoogleMap Addon
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14) UILocalNotification With NSNotificationCenter
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15) CLLocationManager Example
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16) UIImagePickerController Using Camera And PhotoLibrary
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17) Multi Section UITableView - UIPickerView
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18) Hello World IOS App Using Swift
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19) Swift Programming Language - Playground
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20) TabBar Controller
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21) Understanding Auto Layout and Layout Constraints
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22) Shopping List App - Cloud - Part 3 - Final
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23) Shopping List App - Cloud - Part 2
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24) Shopping List App - Cloud - Part 1
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25) Protocol And Delegates With NSURLSession
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26) Webservice Using NSURLSession
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27) UIPickerView Addon - InputView And AccessoryView For UITextField
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28) Protocol And Delegates
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29) UIPickerView - Add Programmatically
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30) NSUserDefaults - UIAlertControler - Back Navigation Title Change
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31) CoreData - StudentsRecord App
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32) Manual Segue
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33) TableViewController Example
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34) NSArray And NSDictionary
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35) Reverse (Unwind) Segue
2016-01-22 00:56:28
36) ViewController - Segue - Messages
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37) WebService Example
2014-12-22 05:16:57
38) CoreData Example

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