iOS - How to Detect if Button is Pressed Twice - ios

Question

I have a button that you can press and the text of that button will change. I want to be able to detect when the user clicks the button again, so that the button text will change back to its original text. How would I be able to do that? Here is the code I have so far.
//Set Text and alignment for the buttons
[nocavities setTitle:#"No cavities\n5 points" forState:UIControlStateNormal];
nocavities.titleLabel.textAlignment = NSTextAlignmentCenter;
-(IBAction)nocavitiesaction:(id)sender {
[sender setTitle:#"Whenever you visit our office cavity-free, you will receive 5 points!" forState:UIControlStateNormal];
}
I feel like in the IBAction I should change the state to
UIControlStateNormalPressed
but I'm not sure.

Answer 1

You can set a counter inside the IBAction
Something like this:
-(IBAction)nocavitiesaction:(id)sender {
static int count = 0;
count ++;
if(count % 2 != 0){
//Set title 1
}else{
//Set title 2
}
}

Answer 2

Open xib file and select the button.
Under the attributes inspector you will find "State Config", select "Default" from dropdown.
Change the title of button to "No cavities\n5 points"
Change State Config to "Selected"
Change title to "Whenever you visit our office cavity-free, you will receive 5 points!"
Now toggle these titles by.
- (IBAction)nocavitiesaction:(id)sender
{
UIButton * button = sender;
button.selected = !button.selected;
}

Answer 3

like this.
declare global int flag=1;
-(IBAction)methodName:(id)sender
{
if(flag==1)
{
//set title 1
flag=2;
}
else
{
//set title 2
flag=1
}
}

Answer 4

There's no UIControlStateNormalPressed state, but there is a UIControlStateSelected. You can set a title for both the selected and normal states, then manually set the UIButton to its selected state like so:
- (void)viewDidLoad {
[self.button setTitle:#"Whenever you visit our office cavity-free, you will receive 5 points!" forState:UIControlStateNormal];
[self.button setTitle:#"No cavities\n5 points" forState:UIControlStateSelected];
}
- (IBAction)nocavitiesaction:(UIButton*)sender {
sender.selected = !sender.selected;
}
Note: I've changed the parameter from id to UIButton to avoid having to convert id to UIButton to check its selected state. And the UIButton should be of type "Custom" if you'd like to prevent the background tint while selected.