Reading data from .plist file

    NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
    NSString *filePath = [bundlePath stringByAppendingPathComponent:@"Info.plist"];
    NSDictionary *plistData = [[NSDictionary dictionaryWithContentsOfFile:filePath] retain];
   
    versionLabel = [[UILabel alloc] initWithFrame:CGRectMake(100,100,60,25)];
    versionLabel.backgroundColor = [UIColor clearColor];
    versionLabel.textColor = [UIColor whiteColor];
    versionLabel.font = [UIFont systemFontOfSize:10];
    NSString *versionString = [NSString stringWithFormat:@"v%@", [plistData objectForKey:@"CFBundleVersion"]];
    versionLabel.text = versionString;
    [self.view addSubview:versionLabel];

or simply :

NSString *s = [NSString stringWithFormat:@"App Version %@",[[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleVersion"]];
    versionLabel.text = s;