Question

I’m new to Objetive-C and need some help,

I have an Array with 22 UIImage’s and 4 UIButtons on the view.
I want to take an image from the array with ObjectAtIndex:somecounter and place this image randomly in one of the 4 UIButton’s, than I want to take another 3 UIImages from the Array (random images) and locate them randomly in the other 3 UIButtons that I have left.

so in each time that the counter is in a number, take the UIImage that stored in this index, locate it randomly in one of the UIButtons, than take other 3 random UIImages from the Array and locate them randomly on the 3 UIButton that I have left.

how can I do that?

after using basvk answer came up with this:

-(void)PlaceWordAndPictueOnScreen
{
    NSArray *buttons = [NSArray arrayWithObjects:btnLetter1, btnLetter2, btnLetter3, btnLetter4, nil];
    for (UIButton *btn in buttons) {
        int randomIndex= random() % [LettersArray count];
        UIImage *img = [LettersArray objectAtIndex:randomIndex];
        [btn setImage:img forState:UIControlStateNormal];
        [LettersArray removeObjectAtIndex:randomIndex];                        
    }
}

so I did exactly as he said and it worked like charm, but, I do have a problem.
I have this counter called ‘imgcounter’, lets say he’s value is ‘4’, I want to take the image that located at index 4 and put it in one of the ‘btnLetter’ UIButton, but in a random button, than in the other 3 ‘btnLetter’ buttons that left, to put another 3 random UIImage’s, how can I do that?

Thanks..

Answer 1

Out the top of my head, something like this:

  -(void)placeImages {
        NSMutableArray *images = [NSMutableArray arrayWithObjects:@"image1.png", @"image2.png", @"image3.png", @"image4.png", @"image5.png", @"image6.png", @"image7.png", @"image8.png", nil]; // etc...
        NSArray *buttons = [NSArray arrayWithObjects:btn1, btn2, btn3, btn4, nil];
        for (UIButton *btn in buttons) {
              int randomIndex= random() % images.length;
              UIImage *img = [images objectAtIndex:randomIndex];
              [btn setImage:img forState:UIControlStateNormal];
              [images removeObjectAtIndex:randomIndex];                        
        }