navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 40)];

[self.view addSubview:navBar];

navBar.barStyle = UIBarStyleDefault;

[navBar release];

UIBarButtonItem* cancelBtnItem = [[UIBarButtonItem alloc] initWithTitle:@"取消" style:UIBarButtonItemStylePlain

target:self action:@selector(cancelBtnPress)];

UIBarButtonItem* sureBtnItem = [[UIBarButtonItem alloc] initWithTitle:@"确定" style:UIBarButtonItemStyleDone

target:self action:@selector(sureBtnPress)];

UINavigationItem* navItem = [[UINavigationItem alloc] initWithTitle:@"设置经度"];

navItem.leftBarButtonItem = cancelBtnItem;

navItem.rightBarButtonItem = sureBtnItem;

navItem.hidesBackButton = YES;

[cancelBtnItem release];

[sureBtnItem release];

navigationController.navigationBar.tintColor = [UIColor colorWithRed:(21.0/255.0) green:(153.0 / 255.0) blue:(224.0 / 255.0) alpha:1];

[navBar pushNavigationItem:navItem animated:NO];

[navItem release];