How to get path for images objective-C - objective-c

Question

I want to call images from different folder, would you please help me to implement this;
I have this structure for my folders :
Folder1
file1
image1.jpg
file2
image2.jpg
file3
image3.jpg
Folder2 ....
inside of each file%d I have one image%.jpg
I want to call my images in loop,
for (i = 1; i > image; i++)
{
NSString *image = [NSString stringWithFormat:#"image%d.jpg", i];
But my question is how to enter to the folders and get images
can I have something like this :
stringWithFormat:#"Folder%d/File%d/image%d" ofType:#"jpg"
what is the best way?
Thanks in advance!

Answer 1

Here are a few useful code snippets that work for me.
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *mapDirPath = [documentsDirectory stringByAppendingPathComponent:#"/MapCache"];
// Creating a directory in the documents directory
NSError* error;
if (![[NSFileManager defaultManager] fileExistsAtPath:mapDirPath])
[[NSFileManager defaultManager] createDirectoryAtPath:mapDirPath withIntermediateDirectories:NO attributes:nil error:&error];
// loading an image
NSString *filePath = [self.localImagePath stringByAppendingPathComponent: key];
if ( [[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
UIImage* image = [UIImage imageWithContentsOfFile:filePath];
return image;
}
// Writing an image
[[NSFileManager defaultManager] createFileAtPath:filePath contents:remoteData attributes:nil];
Hope that helps
Of course, if you're reading images from your bundle, you want this instead
[[NSBundle mainBundle] pathForResource: #"filename" ofType:#"png" directory: #"directory1"]

Answer 2

Right, this is how I would do it.
for (f = 1; f <= numberOfFolders; i++) {
for (i = 1; i <= numberOfImages; i++) {
NSString* file = [NSString stringWithFormat: #".../Folder%d/File%d/image%d.jpg", f, i, i];
NSImage* image = [NSImage imageNamed: file];
// Do something with the image
}
}
A note: I don't know where Folder1/Folder2... etc are, so I used '.../' on the code. Be sure to fill that part appropriately.

Answer 3

Iterate folders and images appending the image path to the library path:
NSString * libraryPath = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) objectAtIndex:0];
for (NSUInteger f = 1; f <= numFolders; i++) {
for (NSUInteger i = 1; i <= numImages; i++) {
// Create the image path
NSString * imagePath = [NSString stringWithFormat:#"%#/Folder%d/File%d/image%d.jpg", libraryPath, f, i, i];
// Check if file exists
if ( [[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
UIImage * image = [UIImage imageWithContentsOfFile:imagePath];
// Use image...
}
else {
NSLog(#"Image not found.");
}
}
}