gistfile1.txt

Assume Xcode project file structure like:

    Project/
    - project.xcworkspace
    - project.xcodeproj
    - Project/
      - assets/
        - data/
        - css/
        - html/
          - content.html
      - en.lproj/
      - main.m
      - etc
      - etc

To list the contents of the assets/ directory :

    NSString *filesPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"assets"];
    NSArray *filesList = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:filesPath error:nil];
    NSLog(@"filesList = %@", filesList);

To list contents of assets/data directory:

    NSString *filesPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"assets"];
    NSArray *filesList = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:filesPath error:nil];
    NSLog(@"filesList = %@", filesList);

To load content.html:

    NSString *pathToBundle = [[NSBundle mainBundle] resourcePath];
    NSURL *baseURL = [NSURL fileURLWithPath:pathToBundle];
    
    NSString *pathToFile = [[NSBundle mainBundle] pathForResource:@"content" ofType:@"html"];
    NSString *htmlFileToDisplay = [[NSString alloc] initWithContentsOfFile:pathToFile];