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I have 'n' button. I want to shuffle those button in my application. Or you can say that i want to shuffle the title over buttons. Is it possible.Its an Iphone app.

Peter Hosey
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Tauquir
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    Of course it's possible. – Pablo Santa Cruz Aug 05 '10 at 13:45
  • possible duplicate of [i am using 5 buttons in the cocoa interface builder and i want to shuffle it.](http://stackoverflow.com/questions/3404218/i-am-using-5-buttons-in-the-cocoa-interface-builder-and-i-want-to-shuffle-it) Please don't litter StackOverflow with repeats of your own questions. – Joshua Nozzi Aug 05 '10 at 13:58
  • Duplicate yes, but the first question was closed as 'not a question', so it's not like he had a choice. – Kalle Aug 05 '10 at 14:05
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    You'll notice my name isn't in the list of closers and that I actually attempted to answer his question based on the information he provided (and a little bit of guessing). Not to mention "I opened a new question because my other was voted closed by the community" isn't really a justification. – Joshua Nozzi Aug 05 '10 at 14:14

2 Answers2

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What you might need to know:

  • How to change the position of a button. You can do this with frame property. If you change just the origin member of CGRect, you can move the button without resizing it.
  • How to change the title of a button (if you don't want to change its position). This can be achieved with the setTitle:forState: method of UIButton.
  • Determining a random number. For general-purpose random number generation, you can use the rand() method. For more serious random number generation there are other methods available but rand() should suffice for your needs. Just ensure to call srand() with some seed before your first call to rand().
  • If you have 100 buttons, you probably should not use Interface Builder but you should create the buttons separately, otherwise you will end up with a class with 100 IBOutlet variables. Creating them yourself and maintaining them in an array will give you greater control over their shuffling. Creating them manually has been discussed on StackOverflow previously.
Community
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dreamlax
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Of course it's possible. You can swap titles on two buttons like this:

UIButton *b1, *b2;
NSString *tmp;
tmp = [b1 text];
[b1 setText:[b2 text]];
[b2 setText:tmp];

You can extend this procedure to n buttons.

Pablo Santa Cruz
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  • yah it is possible to swap the text.But suppose i have 100 buttons then it won't help. So, What you can do if this is the scenario in front of you? So, find that there is any shuffle methods are available, which can be used to shuffle whole button!! – Tauquir Aug 05 '10 at 13:56
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    Just loop through all of the buttons then and swap at random – iwasrobbed Aug 05 '10 at 14:12
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    Who would want to use an application with 100 shuffling buttons?! – dreamlax Aug 05 '10 at 21:25
  • this piece of code is not working correctly. I am using third button, on click this button the text over two button swap. Can you have more elaborate on this topic. thnks – Tauquir Aug 06 '10 at 13:39
  • It's because UIButton no longer has a `setText` method. You have to do `setTitle:forState`. – zekel Nov 16 '10 at 17:36