iOS Swift&OC 模仿主流App 实现滑动视图隐藏导航栏

来源：互联网发布：淘宝详情页怎么加链接编辑：程序博客网时间：2024/06/05 14:20

简单直接上图上代码 -.- 一个GIF图5M?

我是一个测试.gif

@property (nonatomic, strong) UITableView *tableViewScroll;@property (nonatomic, assign) double recordDistance; //记录滑动的距离@property (nonatomic, strong) UIView *customView;@property (nonatomic, strong) UIButton *btn;

创建所需要的视图

- (UITableView *)tableViewScroll{    if (_tableViewScroll == nil) {        _tableViewScroll = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, screenWidth, screenHeight) style:UITableViewStylePlain];        _tableViewScroll.delegate = self;        _tableViewScroll.dataSource = self;        [_tableViewScroll registerClass:[UITableViewCell class] forCellReuseIdentifier:cellIdentifier];    }    return _tableViewScroll;}

- (UIView *)customView{    if (_customView == nil) {        _customView = [[UIView alloc] initWithFrame:CGRectMake(0, 44, screenWidth, 30)];        _customView.backgroundColor = [UIColor lightGrayColor];    }    return _customView;}

- (UIButton *)btn{    if (_btn == nil) {        _btn = [UIButton buttonWithType:UIButtonTypeCustom];        _btn.frame = CGRectMake(screenWidth - 70, 5, 40, 20);        [_btn setTitle:@"关注" forState:UIControlStateNormal];        _btn.titleLabel.font = [UIFont systemFontOfSize:13];        _btn.backgroundColor = [UIColor greenColor];    }    return _btn;}

关键在于scrollView协议方法中的处理

// Objective-C- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{    // 记录滑动距离    self.recordDistance = scrollView.contentOffset.y;    NSLog(@"histroy_y ======== %lf", self.recordDistance);}// Swiftfunc scrollViewDidEndDecelerating(scrollView: UIScrollView) {        self.recordDistance = scrollView.contentOffset.y    }

// Objective-C- (void)scrollViewDidScroll:(UIScrollView *)scrollView{    NSLog(@"y ======= %lf", scrollView.contentOffset.y);    scrollView.contentOffset.y > self.recordDistance ? scrollView.contentOffset.y < self.recordDistance ? [self.navigationController setNavigationBarHidden:NO animated:YES]:[self.navigationController setNavigationBarHidden:YES animated:YES] : [self.navigationController setNavigationBarHidden:NO animated:YES];}// Swiftfunc scrollViewDidScroll(scrollView: UIScrollView) {        scrollView.contentOffset.y > self.recordDistance ? scrollView.contentOffset.y < self.recordDistance ? self.navigationController?.setNavigationBarHidden(false, animated: true):self.navigationController?.setNavigationBarHidden(true, animated: true) : self.navigationController?.setNavigationBarHidden(false, animated: true);    }

省略了tableview相关的代码
在viewDidload中

    [self.view addSubview:self.tableViewScroll];    [self.navigationController.navigationBar addSubview:self.customView];    [self.customView addSubview:self.btn];    self.title = @"这是一个测试页";    self.navigationController.navigationBar.barTintColor = [UIColor lightGrayColor];

觉得还可以请点个赞, 我要申请微博加V. 点个赞吧客官 -.- 哈哈哈

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