Question

I have created a custom UIButton for an iOS 4.3+ application. I wanted to make the background image stretch, so I and used the following methods to set its background image:

[myButton setBackgroundImage:[[UIImage imageNamed:myImagePath]  stretchableImageWithLeftCapWidth:leftStretchValue topCapHeight:topStretchValue] forState:UIControlStateNormal]
[myButton setBackgroundImage:[[UIImage imageNamed:myHighlightedImagePath]  stretchableImageWithLeftCapWidth:eftStretchValue topCapHeight:topStretchValue] forState:UIControlStateHighlighted]
[myButton setBackgroundImage:[[UIImage imageNamed:mySelectedImagePath]
stretchableImageWithLeftCapWidth:eftStretchValue topCapHeight:topStretchValue] forState:UIControlStateSelected]

I have added an event handler to the custom button

[myButton addTarget:self action:@selector(buttonHighlighted:) forControlEvents:UIControlEventTouchDown];

[myButton addTarget:self action:@selector(buttonSelected:) forControlEvents:UIControlEventTouchUpInside];

In the above mentioned methods, I have set the selected and the highlighted state of the button accordingly. I have changed the frame of the UIButton to adjust the dimensions of an irregular image (mySelectedImage and myHighlightedImage, neither of which is a rectangle), so that it gets aligned properly along with myImage.

- (void) buttonSelected {
myButton.selected = !myButton.selected; //setting the selected property to NO in the     viewDidLoad

//code to change the frame of the UIButton to accomodate the irregular image
}


- (void) buttonHighlighted {
myButton.highlighted = YES;
}

The problem I am facing is that when I select myButton, a gray color overlay is displayed on myImage for a very short time before the images myHighlightedImage and mySelectedImage are displayed as its background. I have set the background color of myButton as clearColor, thinking that might be the reason, but it is not getting solved.

What could be the possible issue… ?

Answer 1

button.adjustsImageWhenHighlighted = NO;

I think that is what you are looking for..