iOS UISegmentControl如何实现自定义分栏效果

小编给大家分享一下iOS UISegmentControl如何实现自定义分栏效果，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！

具体内容如下

iOS 自带的UISegmentControl实现的就是类似上图的效果
但是很多用处 一般这两个分栏是两个tableView,需要左右滑动来响应分栏

下面来讲述这样的效果是怎么实现的呢？

主要那里有一根短红线，需要滑动 来切换tableView

先自定义一个SegmentView

.h

//定义block，用来传递点击的第几个按钮typedef void (^PassValueBlock)(NSInteger index);@interface BCLCommunitySegmentView : UIView//定义一下block@property (nonatomic, strong) PassValueBlock returnBlock;@property (nonatomic, strong) UIImageView *selectImage;//这个就是短红线//初始化数组，传入frame和名称- (id) initWithFrame:(CGRect)frame withTitleArray:(NSArray *)array;//block传递值方法- (void)setReturnBlock:(PassValueBlock)returnBlock;@end

在SegmentView.m中
循环创建按钮，几个分栏创建几个按钮

- (void)creatSegmentView {    //设置按钮的宽度    _itemWidth = self.frame.size.width / _itemCounts;    //循环创建按钮    for (int i = 0; i < _itemCounts; i++) {        UIButton *button  = [[UIButton alloc]initWithFrame:CGRectMake((i + 1) *_itemWidth/2, 0, _itemWidth/2, self.frame.size.height)];        [self addSubview:button];                //设置button的字        [button setTitle:_titleArray[i] forState:UIControlStateNormal];        //设置button的字颜色                [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];        //设置字体大小        button.titleLabel.font = [UIFont systemFontOfSize:20];        //设置居中显示        button.titleLabel.textAlignment = NSTextAlignmentCenter;        //设置tag值        button.tag = 1000 + i;        //添加点击事件        [button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];        //如果是第一个，默认被选中        if (i == 0) {            button.selected = YES;        }    }            //添加一个select    _selectImage = [[UIImageView alloc]initWithFrame:CGRectMake(_itemWidth / 2, self.frame.size.height - 2, _itemWidth / 2, 2)];    _selectImage.image = [UIImage imageNamed:@"bcl_bg_community_segment_color_line"];    [self addSubview:_selectImage];}

然后设置按钮的点击事件，将点击到哪个按钮 回调过去

-(void)buttonAction:(UIButton *)button{        //当button被点击，所有的button都设为未选中状态    for (UIView *view in self.subviews) {        if ([view isKindOfClass:[UIButton class]]) {            UIButton *subButton = (UIButton*)view;            subButton.selected = NO;            subButton.titleLabel.font = [UIFont systemFontOfSize:20];        }    }    //然后将选中的这个button变为选中状态    button.selected = YES;        //通过当前的tag值设置select的位置    NSInteger index = button.tag - 1000;    [UIView animateWithDuration:0.3 animations:^{        self->_selectImage.frame = CGRectMake((1 + index)*_itemWidth/2, _selectImage.frame.origin.y, self->_selectImage.frame.size.width, _selectImage.frame.size.height);    }];        _returnBlock(index);}

在需要展现的controller中

.h

@interface BCLCommunityView : UIView@property (nonatomic, strong) UIScrollView *scrollerView;@property(nonatomic ,strong) UITableView *circleTableView;@property(nonatomic ,strong) UITableView *squreTableView;@property (nonatomic, strong)BCLCommunitySegmentView *segmentView;@end

在.m中用scrollView实现分栏的两个tableView的滑动

- (instancetype) initWithFrame:(CGRect)frame {    if(self = [super initWithFrame:frame]) {        [self setSegmentView];                _circleTableView = [self loadTableView];        _squreTableView = [self loadTableView];                _circleTableView.tag = 1;        _squreTableView.tag = 2;                _scrollerView = [[UIScrollView alloc] init];        _scrollerView.frame = CGRectMake(0, 104, KScreenW, KScreenH);        _scrollerView.pagingEnabled = YES;        _scrollerView.scrollEnabled = YES;        _scrollerView.contentSize = CGSizeMake(KScreenW * 2, KScreenH);        _scrollerView.bounces = YES;        _scrollerView.delegate = self;                [_scrollerView addSubview:_circleTableView];        [_scrollerView addSubview:_squreTableView];                _circleTableView.frame = CGRectMake(0, 0, KScreenW, KScreenH);        _squreTableView.frame = CGRectMake(KScreenW, 0, KScreenW, KScreenH);        [self addSubview:_scrollerView];    }    return self;}- (UITableView *)loadTableView{    UITableView  *tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, KScreenW, KScreenH) style:UITableViewStyleGrouped];    tableView.showsVerticalScrollIndicator = NO;    [tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];        tableView.dataSource = self;        [self addSubview:tableView];    return tableView;}- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {    if(tableView.tag == 1) {        return 3;    } else {         return 2;    }   }- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    return 1;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    if(tableView.tag == 1) {        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];        if(!cell) {            cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];                    }        cell.backgroundColor = [UIColor redColor];                cell.textLabel.text = @"11111";        return cell;    } else {        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];        if(!cell) {            cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];        }        return cell;    }    }

scrollView代理 滑动scrollerView实现小红条的滑动

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {    CGRect frame = _segmentView.selectImage.frame;    if(scrollView.contentOffset.x / KScreenW == 0) {        [UIView animateWithDuration:0.1 animations:^{        _segmentView.selectImage.frame = CGRectMake(KScreenW / 4, frame.origin.y, frame.size.width, frame.size.height);        }];    } else if(scrollView.contentOffset.x / KScreenW == 1){        [UIView animateWithDuration:0.1 animations:^{            _segmentView.selectImage.frame = CGRectMake(KScreenW / 2, frame.origin.y, frame.size.width, frame.size.height);        }];    }}

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