drag image or button in iPhone SDK using UITouch Events

This code is show UITouch delegate methods. In this example we use touchMoved delegate method for dragging the image.



1. Code for .h file.

#import


@interface UIDrawController : UIViewController {

    IBOutlet UIImageView *imgApple;
}

@end

2. Code for .m file.

#import "UIDrawController.h"


@implementation UIDrawController

- (void)viewDidLoad {
    [super viewDidLoad];
 
    self.navigationController.navigationBar.hidden = TRUE;
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint pointMoved = [touch locationInView:self.view];  
    imgApple.frame = CGRectMake(pointMoved.x, pointMoved.y, 64, 64);
}

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
 
    // Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}


- (void)dealloc {
    [super dealloc];
}


@end