Question

i programmatically insert a custom botton (image) in xCode. After a click on the UIbutton i want to move the button to a custom place on the iPhone screen.

The programmatically button:

self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];

    UIButton *MyButton = [UIButton buttonWithType:nil];

    MyButton.frame = CGRectMake(100, 170, 100, 30);

    [MyButton setImage:[UIImage imageNamed:@"tap.png"] forState:nil];

    [self.view addSubview:MyButton];

    [MyButton addTarget:self action:@selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];

i’m trying to move the button after a click.

-(void)buttonPressed {
    NSLog(@"Button Pressed!");


    CGRect frame = MyButton.frame;
    frame.origin.x = 100; // new x coordinate
    frame.origin.y = 4; // new y coordinate

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration: 0.1];
    MyButton.frame = frame;
    [UIView commitAnimations];

    }

but nothing nothings happens.

I the .h file

IBOutlet UIButton *MyButton;
@property (nonatomic, retain) UIButton *MyButton;

Answer 1

It would be easier to use an UIButton, because they already listen for tap events. Otherwise you will need to add an UIGestureRecognizer to your UIImageView. Once you have your UIButton set up in Interface Builder and connected to an IBOutlet, you can use this same code to move it.

EDIT

Your problem may be that you are creating a new button instead of assigning to your MyButton property. Instead of:

UIButton *MyButton = [UIButton buttonWithType:nil];

try:

MyButton = [UIButton buttonWithType:UIButtonTypeCustom]; // UIButtonTypeCustom is what you would need to properly display your image. If you aren't setting an image for the button yet, then instead try UIButtonTypeRoundedRect.