UISegmentedControl搭配UIScrollView使用

最新推荐文章于 2022-08-21 00:16:13 发布

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最新推荐文章于 2022-08-21 00:16:13 发布

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分类专栏： iOS学习文章标签： uiscrollview UISegmente

本文链接：https://blog.youkuaiyun.com/tzl7860071/article/details/52072826

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本文介绍了一个基于iOS平台的自定义控制器实现方案，通过UISegmentedControl选择不同的视图进行展示，并支持左右滑动切换视图。文章详细展示了如何设置UIScrollView以实现平滑的页面切换效果，并通过代码片段说明了各个组件的初始化过程。

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实现左右滑动切换及点击切换
自用

@interface TZLSegmentController ()<UIScrollViewDelegate>
@property (nonatomic) UISegmentedControl *segmentControl;
@property (nonatomic) TZLLiveController *liveVC;
@property (nonatomic) TZLPicShowController *picShowVC;
@property (nonatomic) UIScrollView *scrollView;

@end

- (void)viewDidLoad {
    [super viewDidLoad];
    [self scrollView];
    self.segmentControl = [[UISegmentedControl alloc] initWithItems:@[@"图赏", @"直播"]];
    _segmentControl.selectedSegmentIndex = 0;
    _segmentControl.frame = CGRectMake(0, 0, 120, 28);
    _segmentControl.tintColor = [UIColor whiteColor];
    self.navigationItem.titleView = _segmentControl;

    [_segmentControl bk_addEventHandler:^(id sender) {


        self.scrollView.contentOffset = CGPointMake(self.segmentControl.selectedSegmentIndex * self.view.width, 0);

    } forControlEvents:UIControlEventValueChanged];


}

#pragma mark - UIScrollViewDelegate
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
    CGFloat offset = scrollView.contentOffset.x;
    self.segmentControl.selectedSegmentIndex = offset / self.view.width;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}



- (TZLLiveController *)liveVC {
    if(_liveVC == nil) {
        _liveVC = [[TZLLiveController alloc] init];
        _liveVC.view.frame = CGRectMake(self.view.width, 0, self.view.width, self.view.height);
    }
    return _liveVC;
}

- (TZLPicShowController *)picShowVC {
    if(_picShowVC == nil) {
        _picShowVC = [[TZLPicShowController alloc] init];
        _picShowVC.view.frame = CGRectMake(0, 0, self.view.width, self.view.height);
    }
    return _picShowVC;
}

- (UIScrollView *)scrollView {
    if(_scrollView == nil) {
        //注意: 千万不要用Monsery来布局,否则在scrollview中无法再刷新
        _scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.width, self.view.height)];
        [self.view addSubview:_scrollView];
        _scrollView.delegate = self;
        _scrollView.bounces = NO;
        _scrollView.pagingEnabled = YES;
        _scrollView.directionalLockEnabled = YES;

        _scrollView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
        _scrollView.contentSize = CGSizeMake(2 * self.view.width, self.view.height);
        _scrollView.showsHorizontalScrollIndicator = NO;

        [_scrollView addSubview:self.picShowVC.view];
        [_scrollView addSubview:self.liveVC.view];   
    }
    return _scrollView;

}