Xcode iOS push down button and drag then up on a second button

Question

Lets say I wan\'t to add 1 to an integer. This will only be done when I push down on a UIButton and then release my finger on another UIButton.

Answer 1

// Create a button, add targets

UIButton *cloudButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [cloudButton setImage:[UIImage imageNamed:@"notification_add.png"] forState:UIControlStateNormal];
        [cloudButton setFrame:CGRectMake(0, 0, 30, 30)];
        [cloudButton addTarget:self action:@selector(dragBegan:withEvent: )
           forControlEvents: UIControlEventTouchDown];
        [cloudButton addTarget:self action:@selector(dragMoving:withEvent: )
           forControlEvents: UIControlEventTouchDragInside | UIControlEventTouchDragOutside];
        [cloudButton addTarget:self action:@selector(dragEnded:withEvent: )
           forControlEvents: UIControlEventTouchUpInside |
         UIControlEventTouchUpOutside];

        [self.view addSubview:cloudButton];

//event methods

- (void) dragBegan: (UIControl *) c withEvent:ev
{
    NSLog(@"dragBegan......");
}

- (void) dragMoving: (UIControl *) c withEvent:ev
{
    NSLog(@"dragMoving..............");
}
- (void) dragEnded: (UIControl *) c withEvent:ev
{
    NSLog(@"dragEnded..............");
}