extracting a selection of Textures from a Texture Atlas - objective-c

Question

I'm trying to write a method to do the above. My Texture Atlas contains more than 500 Textures. When i store my extracted Textures in a new Array and log its description the Array contains my correct named 3 Textures PLUS all of the Textures the original Atlas contained. Everyone of these is referred to " 'MissingResource.png' (128 x 128)".
My Question is: How can i ONLY store the 3 textures i want in the new Array? Here is the code:
-(void)createSelectedTexturesWith:(NSString*)ImageName;
{
int bgCount = 1;
NSMutableString *tempstring = [NSMutableString stringWithString:ImageName];
SKTextureAtlas *atlas = [SKTextureAtlas atlasNamed:#"textures"];
NSMutableArray *Leveltextures = [[NSMutableArray alloc]init];
NSUInteger numImages = atlas.textureNames.count;
for (int i=1;i <= numImages; i++) {
[tempstring appendFormat:#"_%02d.png",bgCount];
NSString *textureName = [NSString stringWithString:tempstring];
SKTexture *temp = [atlas textureNamed:textureName];
[Leveltextures addObject:temp];
[tempstring setString:ImageName];
bgCount++;
}
NSLog(#"Leveltextures Content: %#",[Leveltextures description]);
}

Answer 1

Not sure I understand what you want. But if I do understand it correctly, why can't you just check if the textureName's prefix matches your imageName and only create the texture and add to the array in that case only ?

Answer 2

Thank you prototypical, that did it for me. Though the code is maybe not too elegant, here it is. Maybe it helps somebody else.
-(void)createSelectedTexturesWith:(NSString*)ImageName;
{
bgCount=1;
NSMutableString *tempstring = [NSMutableString stringWithString:ImageName];
SKTextureAtlas *atlas = [SKTextureAtlas atlasNamed:#"textures"];
NSMutableArray *Leveltextures = [[NSMutableArray alloc]init];
NSArray *atlasArray = [atlas textureNames];
for (NSString *string in atlasArray) {
if ([string hasPrefix:ImageName]){
[tempstring appendFormat:#"%02d.png",bgCount];
NSString *textureName = [NSString stringWithString:tempstring];
SKTexture *temp = [atlas textureNamed:textureName];
[Leveltextures addObject:temp];
[tempstring setString:ImageName];
bgCount++;
}
}
NSLog(#"Leveltextures Content: %#",[Leveltextures description]);
}