Highlight the UIButtons created Dynamically? - ios

Question

In my application I have created 20 buttons with in a scroll view, now problem is that I was not able to highlight the selected button.
My intention is to show the pressed button with a different look than normal. When another button is pressed the previous one should become normal:
UIButton *Abutton = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
[Abutton setTag:i-1];
Abutton.frame = CGRectMake(30.0, 0+j, 40.0, 40.0);
[Abutton setTitle:#"" forState:UIControlStateNormal];
Abutton.backgroundColor = [UIColor clearColor];
[Abutton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal ];
UIImage *buttonImageNormal = [UIImage imageNamed:#"image1.png"];
UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[Abutton setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal];
UIImage *buttonImagePressed = [UIImage imageNamed:#"image2.png"];
UIImage *strechableButtonImagePressed = [buttonImagePressed stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[Abutton setBackgroundImage:strechableButtonImagePressed forState:UIControlStateHighlighted];
[Abutton addTarget:self action:#selector(buttonpressed:) forControlEvents:UIControlEventTouchUpInside];
[scrollview addSubview:Abutton];
Finally I created the method for Abutton pressed as below:
-(IBAction)buttonpressed:(id)sender{
Abutton.highlighted=YES;
//.....
//.....
}
If do it like this then only the last button created dynamically gets highlighted. That's not exactly what I wanted.

Answer 1

I think you should replace your current code for the button pressed:
-(IBAction)buttonpressed:(id)sender{
UIButton *b = (UIButton *)sender;
b.highlighted = YES;
//.....
//.....
}
In your example you are specifically highlighting "AButton". This code highlights the button being pressed.

Answer 2

Solution 1:
Create an NSSet with references to all the buttons. In your buttonPressed method, call makeObjectsPerformSelector on the NSSet's buttons, setting them to the unhighlighted state.
Solution 2:
Use a UISegmentedControl. That seems like what you should be doing in this case anyway.