iPhone - Class 13

[judaco]

complete the location changes

[judaco]

//
//  ViewController.m
//  Gestures - Swipe
//
//  Created by hackeru on 28/05/2017.
//  Copyright © 2017 juda. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
{
    UISwipeGestureRecognizer * swipeRecognizer;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    swipeRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:NSSelectorFromString(@"handleSwipes:")];
    swipeRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
    swipeRecognizer.numberOfTouchesRequired = 2;
    [self.view addGestureRecognizer:swipeRecognizer];
}
-(void)handleSwipes:(UISwipeGestureRecognizer *)sender{
    NSLog(@"swipe left");
}

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

@end

[judaco]

//
//  ViewController.m
//  Gestures - Rotation
//
//  Created by hackeru on 28/05/2017.
//  Copyright © 2017 juda. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
{
    UILabel * label;
    UIRotationGestureRecognizer * rotationRecognizer;
    CGFloat angle;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    label = [[UILabel alloc] init];
    label.text = @"Juda is here";
    [label sizeToFit];
    label.center = self.view.center;
    [self.view addSubview:label];

    rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:NSSelectorFromString(@"handleRotations:")];
    [self.view addGestureRecognizer:rotationRecognizer];
}
-(void)handleRotations:(UIRotationGestureRecognizer*)sender{
    label.transform = CGAffineTransformMakeRotation(angle + sender.rotation);
    if (sender.state == UIGestureRecognizerStateEnded) {
        angle += sender.rotation;
    }
}

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

@end

[judaco]

//
//  ViewController.m
//  Gestures - Pan (drag)
//
//  Created by hackeru on 28/05/2017.
//  Copyright © 2017 juda. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
{
    UILabel * label;
    UIPanGestureRecognizer * panRecognizer;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 250, 60)];
    label.text = @"Juda is here";
    label.backgroundColor = [UIColor greenColor];
    label.textColor = [UIColor whiteColor];
    label.center = self.view.center;
    label.userInteractionEnabled = YES;
    label.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:label];

    panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:NSSelectorFromString(@"handlePan:")];
    [label addGestureRecognizer:panRecognizer];
    panRecognizer.minimumNumberOfTouches = 1;
    panRecognizer.maximumNumberOfTouches = 1;
}
-(void)handlePan:(UIPanGestureRecognizer *)sender{
    if (sender.state != UIGestureRecognizerStateEnded && sender.state != UIGestureRecognizerStateFailed) {
        CGPoint location = [sender locationInView:self.view];
        label.center = location;//same as - sender.center.label = location
    }
}

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

@end

[judaco]

//
//  ViewController.m
//  Gestures - Long Press
//
//  Created by hackeru on 28/05/2017.
//  Copyright © 2017 juda. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
{
    UIView * blueBox;
    UILongPressGestureRecognizer * longPressRecognizer;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    blueBox = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
    blueBox.backgroundColor = [UIColor redColor];
    [self.view addSubview:blueBox];

    longPressRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:NSSelectorFromString(@"handleLongPress:")];
    longPressRecognizer.numberOfTouchesRequired = 2;
    longPressRecognizer.allowableMovement = 100;//move max 100 pixels
    longPressRecognizer.minimumPressDuration = 1;//touch min 1 second
    [self.view addGestureRecognizer:longPressRecognizer];

}
-(void)handleLongPress:(UILongPressGestureRecognizer*)sender{
    NSLog(@"long press");

    if (sender.numberOfTouches == 2) {
        CGPoint point1 = [sender locationOfTouch:0 inView:self.view];
        CGPoint point2 = [sender locationOfTouch:1 inView:self.view];
        CGPoint middle = CGPointMake((point1.x + point2.x)/2, (point1.y + point2.y/2));
        blueBox.center = middle;
    }
}

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

@end

[judaco]

//
//  ViewController.m
//  Gestures - Tap (click)
//
//  Created by hackeru on 28/05/2017.
//  Copyright © 2017 juda. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
{
    UITapGestureRecognizer * tapRecognizer;
    UIImageView * imageView;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    UIImage * image = [UIImage imageNamed:@"img1"];
    imageView = [[UIImageView alloc] initWithImage:image];
    imageView.center = self.view.center;
    [self.view addSubview:imageView];
    imageView.userInteractionEnabled = YES;

    tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:NSSelectorFromString(@"handleTap:")];
    [imageView addGestureRecognizer:tapRecognizer];
}
-(void)handleTap:(UITapGestureRecognizer*)sender{
    NSLog(@"tap");
}

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

@end

[judaco]

NSURLSession

for internet connection we need permission: info.plist - + - app transport security setting by arrow direction down --> under - Allow Arbitrary Loads, boolean = YES

---

//
//  ViewController.m
//  NSURLSession
//
//  Created by hackeru on 28/05/2017.
//  Copyright © 2017 juda. All rights reserved.
//

#import "ViewController.h"

@interface ViewController () <NSURLSessionDelegate>

@end

@implementation ViewController
{
    NSURLSession * session;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    //Define a configuration
    NSURLSessionConfiguration * configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    configuration.timeoutIntervalForRequest = 15.0; // after 15 seconds if the server is not responding disconnect the request
    session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];

    NSURL * url = [NSURL URLWithString:@"http://www.uefa.com"];
    //bring data
    NSURLSessionDataTask * task = [session dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        //NSData is an array of bytes, these are the bytes of the response
        if (error == nil) {
            NSLog(@"data length: %li", data.length);
            NSString * dataAsString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

            //NSLog(@"%i", [[NSThread currentThread] isMainThread]);
            //runs on global queue

        }else{
            NSLog(@"un grande casino %@", [error description]);
        }
        [session finishTasksAndInvalidate];//close the connection. like connection.close
    }];
    [task resume];//starting the task itself
}

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

@end

[judaco]

//this is POST
    NSURLSessionDownloadTask * task = [session downloadTaskWithURL:url completionHandler:^(NSURL * _Nullable location, NSURLResponse * _Nullable response, NSError * _Nullable error) {

    }];