- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    [self.view addSubview:[self getTileLabel:@"你好！"]];
    
}
//导航条的标题
-(UILabel *)getTileLabel:(NSString *)title{
    
    UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 100 , 200, 44)];
    titleLabel.backgroundColor = [UIColor redColor];
    titleLabel.font=[UIFont boldSystemFontOfSize:18];
    titleLabel.textColor=[UIColor greenColor];
    titleLabel.textAlignment = NSTextAlignmentCenter;
    titleLabel.text=title;
    return titleLabel;
}