Add UISwipeGestureRecognition to a custom View ios

Question

I am trying to add UISwipeGestureRecognition to a custom View. I would like to do the same as IOS notifications but in the other way. I did it before with tapGesture, but when I add try with swipe, it does not work.

I am using this code. It is a hidden tableView that I display when I do a swipeUp with one finger.

My problem now is that the view goes up but behind the main view.

 -(UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    UILabel *headerLabel = [[UILabel alloc]init];
    headerLabel.tag = section;
    headerLabel.userInteractionEnabled = YES;
    headerLabel.backgroundColor = [UIColor salmonUser];
    headerLabel.text = [NSString stringWithFormat:@"Interesteds"];
    headerLabel.frame = CGRectMake(100, 0,  120,tableView.tableHeaderView.frame.size.height);
    [headerLabel setTextAlignment:NSTextAlignmentCenter];


    UISwipeGestureRecognizer *upRecognizer= [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [upRecognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];

    UISwipeGestureRecognizer *downRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [downRecognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];

    [headerLabel addGestureRecognizer:upRecognizer];
    [headerLabel addGestureRecognizer:downRecognizer];

    return headerLabel;

    //return nil;
}



- (void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer
{
    NSUserDefaults *d = [NSUserDefaults standardUserDefaults];
    BOOL switchUpDown = [d boolForKey:@"switchUpDown"];


    UISwipeGestureRecognizerDirection up = switchUpDown ? UISwipeGestureRecognizerDirectionUp : UISwipeGestureRecognizerDirectionDown;
    UISwipeGestureRecognizerDirection down = switchUpDown ? UISwipeGestureRecognizerDirectionDown : UISwipeGestureRecognizerDirectionUp;

    if (recognizer.direction == up){

        [UIView animateWithDuration:0.3
                              delay:0.3
                            options: UIViewAnimationCurveEaseOut
                         animations:^{
                             CGRect rect = self.view.frame;
                             rect.origin.y = self.view.frame.size.height-(self.view.frame.size.height/2);
                             self.usersView.frame = rect;
                             mostrada =true;
                         }
                         completion:^(BOOL finished){}];
    } else if(recognizer.direction == down){

        [UIView animateWithDuration:0.3
                              delay:0.3
                            options: UIViewAnimationCurveEaseOut
                         animations:^{
                             CGRect rect = self.view.frame;
                             rect.origin.y = self.view.frame.size.height-(self.view.frame.size.height/11);
                             self.usersView.frame = rect;
                             mostrada=false;
                         }
                         completion:^(BOOL finished){

                         }];
    }

}

Answer 1

Use This code :

 -(UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
    UILabel *headerLabel = [[UILabel alloc]init];
    headerLabel.tag = section;
    headerLabel.userInteractionEnabled = YES;
    headerLabel.backgroundColor = [UIColor salmonUser];
    headerLabel.text = [NSString stringWithFormat:@"Interesteds"];
    headerLabel.frame = CGRectMake(100, 0,  120,tableView.tableHeaderView.frame.size.height);
    [headerLabel setTextAlignment:NSTextAlignmentCenter];

UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(upSwipe:)];
            [swipeLeft setDirection: UISwipeGestureRecognizerDirectionUp ];
            [headerLabel addGestureRecognizer:swipeLeft];
            swipeLeft=nil;

            UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(downSwipe:)];
            [swipeRight setDirection:UISwipeGestureRecognizerDirectionDown];
            [headerLabel addGestureRecognizer:swipeRight];

    return headerLabel;

}

I have used two different method to take action individually for up and down swipe as upSwipe and downSwipe. This will simplefy the code.

-(void)upSwipe:(UISwipeGestureRecognizer *)gesture
{
[UIView animateWithDuration:0.3
                              delay:0.3
                            options: UIViewAnimationCurveEaseOut
                         animations:^{
                             CGRect rect = self.view.frame;
                             rect.origin.y = self.view.frame.size.height-(self.view.frame.size.height/2);
                             self.usersView.frame = rect;
                             mostrada =true;
                         }
                         completion:^(BOOL finished){}];
}

-(void)downSwipe:(UISwipeGestureRecognizer *)gesture
{
[UIView animateWithDuration:0.3
                              delay:0.3
                            options: UIViewAnimationCurveEaseOut
                         animations:^{
                             CGRect rect = self.view.frame;
                             rect.origin.y = self.view.frame.size.height-(self.view.frame.size.height/11);
                             self.usersView.frame = rect;
                             mostrada=false;
                         }
                         completion:^(BOOL finished){

                         }];
}

Answer 2

Change your method to this:

-(UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
    {
    UILabel *headerLabel = [[UILabel alloc]init];
    headerLabel.tag = section;
    headerLabel.userInteractionEnabled = YES;
    headerLabel.backgroundColor = [UIColor salmonUser];
    headerLabel.text = [NSString stringWithFormat:@"Interesteds"];
    headerLabel.frame = CGRectMake(100, 0,  120,tableView.tableHeaderView.frame.size.height);
    [headerLabel setTextAlignment:NSTextAlignmentCenter];


    UISwipeGestureRecognizer *upRecognizer= [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [upRecognizersetDirection:(UISwipeGestureRecognizerDirectionUp)];

    UISwipeGestureRecognizer *downRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
    [downRecognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];

    [headerLabel addGestureRecognizer:upRecognizer];
    [headerLabel addGestureRecognizer:downRecognizer];

    return headerLabel;

    //return nil;
}