Using a String as Images Name - ios

Question

I am working on a while loop that spits out 30 images, each image having a different name. The way I approached this was by creating a NSString variable call img, which will be different with each iteration, i.e., "Badguy 1", "Badguy 2", ect... Then using that string as the name of the image being created.
TotalShips = 1
while(TotalShips < 31){
img = [NSString stringWithFormat:#"Badguy %i",TotalShips];
UIImageView *img = [[UIImageView alloc] initWithFrame: CGRectMake(10,20,20,20)];
img.image = [UIImage imageNamed:#"Badguy.png"];
[self.view addSubview: img];
TotalShips = TotalShips + 1;
}
This doesn't seem to work, and I haven't found very much help on changing an image's name.
Thanks,
Alex

Answer 1

The UIImageView has an property animatedImages (NSArray). Vou can easily play auround with animationDuration and animationReapCount. You can start the animation with [myImageView startAnimation] and stop with [myImageView stopAnimation].
Please read: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIImageView_Class/Reference/Reference.html#//apple_ref/doc/uid/TP40006889-CH3-SW3
The file names can you build in a loop with 'NSString *fileName = [NSString stringWithFormat:#"image%i.png",imageName, iterator]'.

Answer 2

Not sure what you're trying to do, but I'll try to explain what your code does, maybe it helps you understand the problem:
TotalShips = 1
while(TotalShips < 31){
// here your img variable is a string, which will be 'Badguy 1', 'Badguy 2', etc
// you're not using this img value set here anywhere else in your code
img = [NSString stringWithFormat:#"Badguy %i",TotalShips];
// here you redeclare your img as an UIImageView
UIImageView *img = [[UIImageView alloc] initWithFrame: CGRectMake(10,20,20,20)];
// here you assign the image in the imageView to the image 'Badguy.png'
img.image = [UIImage imageNamed:#"Badguy.png"];
[self.view addSubview: img];
TotalShips = TotalShips + 1;
}
So, your code creates 30 different UIImageViews , all of them with the same image: 'Badguy.png', and adds them one on top of the other to the current view. I suppose this is not what you wanted to do.