set UIButton's Image by array of Images randomly

Question

I need your help as I dont know how can I set the background image of my UIButtons from array of images. I have 10 UIButtons and an array of 10 images. I want to set the images from array randomly. Please tel me how this can be possible.

Answer 1

This may need tweaking a bit, I haven't tested it, but the concept should be ok.

NSArray *arr = [NSArray arrayWithObjects:@"1.png", @"2.png", ...., nil];

int index = arc4random() % 10;
UIImage *img = [UIImage imageNamed:[arr objectAtIndex:index]];

Answer 2

1)First declare a NSMutableArray in which you will store the images :

NSMutableArray *yourImgArray;

2)Allocate the array in .m file :

yourImgArray=[[NSMutableArray alloc]initWithObjects:@"1.jpg",@"2.jpg",@"3.jpg",nil];

3)Set the images while setting the tags(in your loop):

[yourButtonInstance setBackgroundImage:yourImageInstance forState:UIControlStateNormal];

Hope it helps !!