How to manage more than one UIImageView in iPhone

Question

I wanna to create dynamically UIImageView on every tap on main view and also wanna to move all the created UIImageView by finger movement.I've got success to dynamic creation on every touch my code is below :

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; CGPoint pt = [touch locationInView:self.view]; imgView = [[[UIImageView alloc] initWithFrame:CGRectMake(pt.x,pt.y, 100, 100)] autorelease]; imgFilepath = [[NSBundle mainBundle] pathForResource:@"img" ofType:@"png"]; img = [[UIImage alloc] initWithContentsOfFile:imgFilepath]; imgView.tag=i; [imgView setImage:img]; [img release]; [self.view addSubview:imgView]; }

Now I wanna to move any of the dynamically created UIImageView by finger movement on it. Thanks.

user529758 · Accepted Answer · 2012-07-20 13:42:40Z

Set the userInteractionEnabled property of the UIImageView to yes in the method you create it (i. e. the method you posted):

imgView.userInteractionEnabled = YES;

then you will most probably need to subclass UIImageView and implement the following methods to move your image view around:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event; - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;

Hint: in the touchesMoved: etc. method, you'll want to track where the user's finger moved -- after reading some more docs you'll most probably end up using -[UITouch locationInView:] -- you'll need to convert the coordinates to the superview of your image view and then move the image view itself in this case.

John Smith · Accepted Answer · 2012-07-20 13:42:06Z

In touchesBegan detect the imageView you have touched. In touchesMoved move the selected imageView by setting it's center to the touch point moved.

Collectives™ on Stack Overflow

How to manage more than one UIImageView in iPhone

2 Answers 2

Comments

Comments

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Related