Question

Here is my method which reads content of file. Unfortunately doesn’t work for me. The path to file is correct. What I miss ?

- (IBAction)readFile:(id)sender
{
    NSString *str = [NSString stringWithContentsOfFile:@"/Users/joe/text.txt" 
                      encoding:NSUTF32StringEncoding 
                      error:nil
                    ];
    NSLog(@"%@", str); //Result is null

}

Answer 1

Try using the built-in functionality of stringWithContentsOfFile:encoding:error: and give it a NSError and you can see exactly whats wrong:

- (IBAction)readFile:(id)sender {
    NSError *readFileError = nil;
    NSString *str = [NSString stringWithContentsOfFile:@"/Users/joe/text.txt" 
                      encoding:NSUTF32StringEncoding 
                      error:&readFileError
                    ];
    if (readFileError) {
        NSLog(@"%@ - %@", [readFileError localizedDescription], [readFileError localizedFailureReason]);
    } else {
        NSLog(@"%@", str);
    }
}