How to distinguish dynamically generated button on selection using iPhone SDK?

In my iPhone app, I have array of buttons that are dynamically generated based on user selection.

How do I distinguish selected button from others?

I want that when user select the other button the previo开发者_开发知识库usly selected button should go back to its normal state in terms of its looks. I am unable to revert the previously selected buttons to its normal state.

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Use tag to identify the button. At the time of creating buttons you can assign tag as number to the button and use the same to identify.

yourButton.tag = intNumber;

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You have an array of the buttons. You can loop through your array and check if it is the one that was clicked.

- (IBAction) buttonClicked:(id)sender {
  for(int i; i < [array count]; i++){
     if((UIButton *)sender == (UIButton *)[array objectAtIndex:i])
        //do something
     else
        //do something else
}

Something like that.

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Try setting tag for each button,using

yourButton.tag=intValue; //intValue>0

Your buttonAction should be as follows,

-(IBAction)buttonAction:(id)sender

Save the previously selected tag, and change the value accordingly.

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you can loop through your subviews and set for all the old style:

- (void)highlightImgWithID:(int)packID {
    [self.view.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        if ([obj isKindOfClass:[UIImageView class]]) {
            [(UIImageView*)obj setHighlighted:([obj tag] == IDtoSelectNext)];
        }
    }];
}

The sample is how I currently implement it in my App with UIImageView's you can change it to work with buttons.