根据滑动显隐状态栏的iOS实现

@interface D1ScrollingNaviBarViewController : UIViewController
//滑动隐藏,显示导航栏
-(void)followRollingScrollView:(UIView *)scrollView;
//用来处理导航栏下还有其他内容也需要跟随导航栏一起隐藏,显示的情况,类似于淘宝客户端的搜索
-(void)followRollingScrollView:(UIView *)scrollView secondAreaHeight:(CGFloat)secondAreaHeight;
@end

#define NAVI_BAR_HEIGHT 44.0
@interface D1ScrollingNaviBarViewController ()<UIGestureRecognizerDelegate>
@property (weak, nonatomic) UIView *scrollView;
@property (retain, nonatomic)UIPanGestureRecognizer *panGesture;
@property (retain, nonatomic)UIView *overLay;
@property (assign, nonatomic)BOOL isHidden;
@property(nonatomic,assign)CGFloat  secondAreaHeight;
@end


@implementation D1ScrollingNaviBarViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
　　　　self.secondAreaHeight = 0.0;
    }
    return self;
}

//设置跟随滚动的滑动试图
-(void)followRollingScrollView:(UIView *)scrollView
{
    self.scrollView = scrollView;
    
    self.panGesture = [[UIPanGestureRecognizer alloc] init];
    self.panGesture.delegate=self;
    self.panGesture.minimumNumberOfTouches = 1;
    [self.panGesture addTarget:self action:@selector(handlePanGesture:)];
    [self.scrollView addGestureRecognizer:self.panGesture];
    
    CGRect rect = self.navigationController.navigationBar.bounds;
    self.overLay = [[UIView alloc] initWithFrame:rect];
    self.overLay.alpha=0;
    self.overLay.backgroundColor=self.navigationController.navigationBar.barTintColor;
    [self.navigationController.navigationBar addSubview:self.overLay];
    [self.navigationController.navigationBar bringSubviewToFront:self.overLay];
    
}
-(void)followRollingScrollView:(UIView *)scrollView secondAreaHeight:(CGFloat)secondAreaHeight
{
    self.secondAreaHeight = secondAreaHeight;
    [self followRollingScrollView:scrollView];
}
#pragma mark - 兼容其他手势
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

#pragma mark - 手势调用函数
-(void)handlePanGesture:(UIPanGestureRecognizer *)panGesture
{
    CGPoint translation = [panGesture translationInView:[self.scrollView superview]];
    //显示
    if (translation.y >= 5) {
        if (self.isHidden) {
            
            self.overLay.alpha=0;
            CGRect navBarFrame = self.navigationController.navigationBar.frame;
            CGRect scrollViewFrame=self.scrollView.frame;
            
            navBarFrame.origin.y = 20;
            scrollViewFrame.origin.y += self.secondAreaHeight+NAVI_BAR_HEIGHT;
            scrollViewFrame.size.height -= self.secondAreaHeight+NAVI_BAR_HEIGHT;
            
            [UIView animateWithDuration:0.5 animations:^{
                self.navigationController.navigationBar.frame = navBarFrame;
                self.scrollView.frame=scrollViewFrame;
            }];
            self.isHidden= NO;
        }
    }
    //隐藏
    if (translation.y <= -20) {
        if (!self.isHidden) {
            CGRect frame =self.navigationController.navigationBar.frame;
            CGRect scrollViewFrame=self.scrollView.frame;
            frame.origin.y = -24;
            scrollViewFrame.origin.y -= self.secondAreaHeight+NAVI_BAR_HEIGHT;
            scrollViewFrame.size.height += self.secondAreaHeight+NAVI_BAR_HEIGHT;
            
            [UIView animateWithDuration:0.5 animations:^{
                self.navigationController.navigationBar.frame = frame;
                self.scrollView.frame=scrollViewFrame;
            } completion:^(BOOL finished) {
                self.overLay.alpha=1;
            }];
            self.isHidden=YES;
        }
    }
    
    
    
}

-(void)viewDidAppear:(BOOL)animated{
    [self.navigationController.navigationBar bringSubviewToFront:self.overLay];
}
@end


要使用的类继承这个基类

	//设置导航栏的背景色的两种方式
	self.navigationController.navigationBar.barTintColor=[UIColor greenColor];//使用颜色
	
	self.navigationController.navigationBar.barTintColor =
		[UIColor colorWithPatternImage:[UIImage imageNamed:@"nav_bg_h64"]];//使用图片
	
	//44高度会被自动拉伸,所以需要注意图片的实际效果
	self.navigationController.navigationBar.barTintColor =
		[UIColor colorWithPatternImage:[UIImage imageNamed:@"navi_bg_h44"]];//使用图片
		
	
	//使用自动滑动显隐代码,这个50,是指紧挨着导航栏的要跟随显隐的区域的高度,如果没有这个区域,可以调用没有这个参数的接口,一样的
	[self followRollingScrollView:self.view secondAreaHeight:50];