ios objective c help with array please!

Question

im new to programming and im trying to make my first iphone app. basically what my app needs to do is draw a random image from an array and output it to a UIImageView in a view. it should be really simple but i cant find anywhere on the internet how to output the array to the uiimage

theArray = [[NSArray alloc] initWithObjects:@"one.png",@"two.png",@"three.png",nil];

heres a basic code of the images. any help would be greatly appreciated!!

also if you could explain any other details i might need.

Saurabh · Accepted Answer · 2011-04-21 14:06:54Z

3

find a random array index using -

int randomArrIndex = arc4random() % [arr count];

then you can fetch image name from array with this index

UIImageView *imgView = [[UIImageView alloc] initWithImage:[arr objectAtIndex:randomArrIndex]];

answered Apr 21, 2011 at 14:06

Saurabh

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10 Comments

nickt Over a year ago

wow that was fast, thanks so much i will try that as soon as i get home.

nickt Over a year ago

actually the code you told me isnt working, its saying randomArrIndex isnt defined and [arr objectAtIndex:randomArrIndex] isnt defined

nickt Over a year ago

UIImageView *cardOutput = [[UIImageView alloc] initWithImage:  [Array objectAtIndex:randomArrIndex]]; - (void)viewDidLoad {          Array = [[NSArray alloc] initWithObjects:@"one.png",@"two.png",@"three.png",nil];     int randomArrayIndex = arc4random() % [Array count];          [super viewDidLoad]; }

is randomArrIndex a method i need to define? im still confused sorry

nickt Over a year ago

@Saurabh is randomArrIndex a method i need to define? im still confused sorry. the book im reading to learn to program is called "sams teach yourself iphone aplication developtment in 24 hours" and it barely touches on arrays at all and google is no help.

Saurabh Over a year ago

randomArrIndex is an integer I defined in answer as - int randomArrIndex = arc4random() % [arr count]; write this line in your code before using it

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