Is it possible that I can change the background image of some button when I click on another button?
I basically have 10 buttons, and I want the user to know which button is currently clicked. So what happens is each button has 2 images. One for selected and one for not selected.
I want to create a function which will reset the background images of all the buttons. And in the method for each button, I will add this reset function and then change the background image of that specific button.
Can someone suggest how is that possible?
I know how to change the background image of a button when that button is clicked.
This how my buttons look:
- (IBAction)posterButton:(id)sender {}
- (IBAction)colorInvertButton:(id)sender {}
etc..
Look up the documentation for UIButton: configure each button like this:
[button setControlImage:selectedImage forState:UIControlStateSelected];
[button setControlImage:unselectedImage forState:UIControlStateNormal];
^^this can also be done in interface builder btw.
There are also the states UIControlStateNormal | UIControlStateHighlighted
UIControlStateNormal | UIControlStateHighlighted
and UIControlStateSelected | UIControlStateHighlighted
UIControlStateSelected | UIControlStateHighlighted
, but this is optional.
A button also has a selected state, inherited from UIControl
.
If you want to have only one selected button at a time, try this (_selectedButton should be declared as an instance variable):
- (UIButton *)selectedButton {
return _selectedButton;
}
- (void)setSelectedButton:(UIButton *)b {
if(b != _selectedButton) {
_selectedButton.selected = NO;
b.selected = YES;
_selectedButton = b;
}
}
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