Objective C - Fill a UIlabel with a random string after clicking a button

Question

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Generate a random alphanumeric string in cocoa

I'm new to objective c and I would like to add the following functionality to my app:

I have a label which has default text after the app launches. I want for that label to change to a random string each time the user clicks a button. It does not matter if the string repeats itself eventually, as long as it is random.

I appreciate the help in advance.

[What have you tried](http://mattgemmell.com/2008/12/08/what-have-you-tried/)? — Extra Savoir-Faire, Jan 17 '13 at 03:34

score 1 · Accepted Answer · edited Jan 17 '13 at 03:47

1

You can use following code :

[[NSProcessInfo processInfo] globallyUniqueString];

for generating the random string.

or

You can create array that contains number of strings. Assuming you created 10 strings and put them in an array then:

int rand= arc4random()%10 
NSString *str=[array objectAtIndex:rand];

edited Jan 17 '13 at 03:47

codingNinja

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answered Jan 17 '13 at 03:40

V-Xtreme

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Don't use arc4random in combination with the modulo operator. What you want is: uint_32_t rand = arc4random_uniform(10); – Christian Kienle Dec 02 '13 at 12:55

Objective C - Fill a UIlabel with a random string after clicking a button

1 Answers1