UITableview tapping on UIImageView

#import <objc/runtime.h> // for objc_setAssociatedObject / objc_getAssociatedObject

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

    UITableViewCell* cell = [tableView cellForItemAtIndexPath:indexPath];

    UIImageView* iv = cell.contentView.subviews.lastObject;

    UIImageView* ivExpand = [[UIImageView alloc] initWithImage: iv.image];

    ivExpand.contentMode = iv.contentMode;

    ivExpand.frame = [self.view convertRect: iv.frame fromView: iv.superview];

    ivExpand.userInteractionEnabled = YES;

    ivExpand.clipsToBounds = YES;

    objc_setAssociatedObject( ivExpand,

                              "original_frame",

                              [NSValue valueWithCGRect: ivExpand.frame],

                              OBJC_ASSOCIATION_RETAIN);

    [UIView transitionWithView: self.view

                      duration: 1.0

                       options: UIViewAnimationOptionAllowAnimatedContent

                    animations:^{

                        [self.view addSubview: ivExpand];

                        ivExpand.frame = self.view.bounds;

                    } completion:^(BOOL finished) {

                        UITapGestureRecognizer* tgr = [[UITapGestureRecognizer alloc] initWithTarget: self action: @selector( onTap: )];

                        [ivExpand addGestureRecognizer: tgr];

                    }];

}

- (void) onTap: (UITapGestureRecognizer*) tgr

{

    [UIView animateWithDuration: 1.0

                     animations:^{

                         tgr.view.frame = [objc_getAssociatedObject( tgr.view,

                                                                    "original_frame" ) CGRectValue];

                     } completion:^(BOOL finished) {

                         [tgr.view removeFromSuperview];

                     }];

}

UIImageView to display fullscreen by tapping using animation.

  @interface viewController : UIViewController <UIGestureRecognizerDelegate>{
    UITapGestureRecognizer *tap;
    BOOL isFullScreen;
    CGRect prevFrame;
}

- (void)viewDidLoad {

    [super viewDidLoad];

isFullScreen = false;
tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(imgToFullScreen)];
tap.delegate = self;
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch;
{
    BOOL shouldReceiveTouch = YES;

    if (gestureRecognizer == tap) {
        shouldReceiveTouch = (touch.view == yourImageView);
    }
    return shouldReceiveTouch;
}

-(void)imgToFullScreen{
    if (!isFullScreen) {
        [UIView animateWithDuration:0.5 delay:0 options:0 animations:^{
            //save previous frame
            prevFrame = yourImageView.frame;
            [yourImageView setFrame:[[UIScreen mainScreen] bounds]];
        }completion:^(BOOL finished){
            isFullScreen = true;
        }];
        return;
    } else {
        [UIView animateWithDuration:0.5 delay:0 options:0 animations:^{
            [yourImageView setFrame:prevFrame];
        }completion:^(BOOL finished){
            isFullScreen = false;
        }];
        return;
    }
}

How to remove specify UILabel subview from UIButton?

//[UIButton addSubview:UILabel];

for(int i = 0 ; i < button.subviews.count ; i++)
{
   UIView *v = [button.subviews objectAtIndex:i];
   if([v isMemberOfClass:[UILabel class]])
   {
      [v removeFromSuperview];
      i--;
   }
}

Foreground notification

  [[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(allFunctions)

                                                 name:UIApplicationWillEnterForegroundNotification

                                               object:nil];

-(void) allFunctions{ //call any functions that need to be run when application will enter foreground

    NSLog(@"calling all functions...application just came back from foreground");

}

UITableView - Reload table view with smooth animation

dispatch_async(dispatch_get_main_queue(), ^{
        [UIView transitionWithView:<"TableName">
                          duration:0.1f
                           options:UIViewAnimationOptionTransitionCrossDissolve
                        animations:^(void) {
                            [<"TableName"> reloadData];
                        } completion:NULL];       
    });

enum

.h file

enum schedualePage

{

    SCHEDULE,

    VIEW_SCHEDULE

};

.m file

Create enum object

enum schedualePage scheduleObj;

switch case:

switch (scheduleObj) {

            case SCHEDULE:

               NSLog(@"SCHEDULE case");

                break;

            case VIEW_SCHEDULE:

               NSLog(@"VIEW_SCHEDULE case");

                break;

            default:

                break;

        }

set 

scheduleObj = SCHEDULE;

Background thread

    dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

            // Add code here to do background processing

            dispatch_async( dispatch_get_main_queue(), ^{

                // Add code here to update the UI/send notifications based on the

                // results of the background processing

            });

        });

(OR)

    dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void){

            // Add code here to do background processing

            dispatch_async( dispatch_get_main_queue(), ^(void){

                // Add code here to update the UI/send notifications based on the

                // results of the background processing

            });

        });