Pick random element of NSArray in Objective-C [duplicate]

Use this code:

uint32_t rnd = arc4random_uniform([tips count]);NSString *randomObject = [tips objectAtIndex:rnd];

EDIT:While working on my project i decided to create a category for NSArray. It's very simple but i found it useful.

Here are the files:

NSArray+Random.h

#import <Foundation/Foundation.h>@interface NSArray (Random)- (id)randomObject;@end

NSArray+Random.m

#import "NSArray+Random.h"@implementation NSArray (Random)-(id)randomObject {    NSUInteger myCount = [self count];    if (myCount)        return [self objectAtIndex:arc4random_uniform(myCount)];    else        return nil;}@end

Then in the current example you use it like this:

NSString *randomObject = [tips randomObject];

Using category has another advantage: when you decide to change your way of selecting random objects in your app you just modify the randomObject method.

NSUInteger i = arc4random();NSString *string = [tips objectAtIndex: i];-(NSString *) returnArrayItem: (NSArray *) array {    //Sets randNum equal to a random number between 0 and the number of elements in the array parameter    NSUInteger randNum = arc4random() % [array count];    //Sets the string returnValue to a random string in the array    NSString *returnValue =  [array objectAtIndex:randNum];    //Returns array    return returnValue;}  

Hope this helps