ios 导航栏设置

[self.navigationController.navigationBar setTintColor:[UIColor whiteColor]];

UILabel *titleText = [[UILabel alloc] initWithFrame: CGRectMake(160, 0, 160, 60)];
titleText.backgroundColor = [UIColor clearColor];
titleText.textColor=[UIColor whiteColor];
titleText.font = [UIFont fontWithName:@"Helvetica" size:19];
titleText.textAlignment=NSTextAlignmentCenter;
[titleText setText:@"通知"];
self.navigationItem.titleView=titleText;

[self.navigationController.navigationBar setBackgroundImage: [UIImage imageNamed:@"Head.png"] forBarMetrics:UIBarMetricsDefault];