iPhone : Get the file path which is within subfolder of Resourse folder

Question

hi all, i am new to iphone programming. i want to read the content of text file which is located in subfolder of Resourse folder

Resourse Folder Structure is following

Resourse

1. Folder1---->Data.txt
2. Folder2---->Data.txt
3. Folder3--->Folder1----->Data.txt

There are multiple file named "Data.txt". so how can i access each folder file. i know how can i read the text file. but if Resourse structure is related to above structure then how can i get the path? for example if i want to access the "Data.txt" from folder3, then how can i get the file path. Please suggest.

Answer 1

    NSBundle* bundle = [NSBundle mainBundle];
    NSString* path = [bundle bundlePath];

This gives you the path to your bundle. From there on, you can navigate your folder structure.

Answer 2

To continue psychotiks answer a full example would look like this:

NSBundle *thisBundle = [NSBundle bundleForClass:[self class]];
NSString *filePath = nil;

if (filePath = [thisBundle pathForResource:@"Data" ofType:@"txt" inDirectory:@"Folder1"])  {

    theContents = [[NSString alloc] initWithContentsOfFile:filePath];

    // when completed, it is the developer's responsibility to release theContents

}

Notice that you can use -pathForResource:ofType:inDirectory to access ressources in sub directories.

Answer 3

Your "resource folder" is actually the contents of your main bundle, also know as the application bundle. You use pathForResource:ofType: or pathForResource:ofType:inDirectory: to get the full path for a resource.

Loading the contents of a file as a string is done with the stringWithContentsOfFile:encoding:error: method for an autoreleased string of with initWithContentsOfFile:encoding:error: if you want a retained string.

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Data" 
                                                     ofType:@"txt"
                                                inDirectory:@"Folder1"];
if (filePath != nil) {
  theContents = [NSString stringWithContentsOfFile:filePath
                                          encoding:NSUTF8StringEncoding
                                             error:NULL];
  // Do stuff to theContents
}

This is almost the same answer as given by Shirkrin previously, but with the slight difference that it works on target. This is because initWithContentsOfFile: is deprecated on Mac OS X, and not available at all iPhone OS.