UIscrollView 与 UIpageControl使用

1.初始化

@property(nonatomic,strong)UIView *subContentView;//父视图
@property(nonatomic,strong)UIScrollView *funcScrollerView;//功能scrollerview
@property(nonatomic,strong)UIView  *funcContent;//功能Content
@property(nonatomic,strong)UIPageControl *pageControl;//page控制

-(UIView *)subContentView{

    if(_subContentView == nil){
        _subContentView = [[UIView alloc]initWithFrame:CGRectMake(0, kcycleViewH, kScreenWidth, ksubContentH)];
        _subContentView.backgroundColor = [UIColor whiteColor];
    }
    return _subContentView;
}

-(UIScrollView *)funcScrollerView{
    if(_funcScrollerView == nil){
        _funcScrollerView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kfuncScrollerH)];
        _funcScrollerView.showsVerticalScrollIndicator = NO;
        _funcScrollerView.showsHorizontalScrollIndicator = NO;
        _funcScrollerView.bounces = NO;
        _funcScrollerView.contentSize = CGSizeMake(kScreenWidth * 2, kfuncScrollerH);
        _funcScrollerView.indicatorStyle = UIScrollViewIndicatorStyleDefault;
        _funcScrollerView.pagingEnabled = YES;
        _funcScrollerView.delegate = self;
    }
    return _funcScrollerView;
}

-(UIView *)funcContent{
    if(_funcContent == nil){
        _funcContent = [UIView new];
        _funcContent.backgroundColor = [UIColor whiteColor];
        _funcContent.frame = CGRectMake(0, 0, kScreenWidth*2, kfuncScrollerH);
        //添加按钮
       [_ItemsArray enumerateObjectsUsingBlock:^(MMHomeBtnItemModel*  _Nonnull model, NSUInteger idx, BOOL * _Nonnull stop) {
           CGFloat BtnItemW = kScreenWidth / 4;
           CGFloat BtnItemH = kfuncScrollerH;
           MMHomeFuncBtnItem *btnItem = [[MMHomeFuncBtnItem alloc]initWithFrame:CGRectMake(idx+idx*BtnItemW, 0, BtnItemW, BtnItemH)];
           [btnItem setImage:[UIImage imageNamed:model.icon] forState:UIControlStateNormal];
           [btnItem setTitle:model.title forState:UIControlStateNormal];
           [btnItem setTitleColor:HEXCOLOR(0x333333) forState:UIControlStateNormal];
           [btnItem.titleLabel setFont:[UIFont systemFontOfSize:14.0f]];
           [btnItem.titleLabel setTextAlignment:NSTextAlignmentCenter];
           btnItem.tag = kTagOffset + idx;
           [btnItem addTarget:self action:@selector(HHFuncBtnClick:) forControlEvents:UIControlEventTouchUpInside];
           [_funcContent addSubview:btnItem];
       }];
    }
    return _funcContent;
}

-(UIPageControl *)pageControl{
    if(_pageControl  == nil){
        _pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, ksubContentH - kpageControlH, kScreenWidth, kpageControlH)];
        _pageControl.currentPage = 0;
        _pageControl.numberOfPages = 2.0f;
        _pageControl.pageIndicatorTintColor = HEXCOLOR(0xcccccc);
        _pageControl.currentPageIndicatorTintColor = HEXCOLOR(kBlueColor);
        [_pageControl addTarget:self action:@selector(pageChange:)
         
              forControlEvents:UIControlEventValueChanged];
    }
    return _pageControl;
    
}

2.视图层级

[self addSubview:self.subContentView];
    [self.subContentView addSubview:self.funcScrollerView];
    [self.funcScrollerView addSubview:self.funcContent];
    [self.subContentView addSubview:self.pageControl];

3.关联事件

#pragma mark - 功能按钮点击
-(void)HHFuncBtnClick:(UIButton *)sender{
    NSUInteger tag = sender.tag - kTagOffset;
    NSLog(@"%lu",tag);
    _FuncBtnClickBlock?_FuncBtnClickBlock(tag):nil;
}

#pragma mark - scrollViewDidScroll
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    if(scrollView == _funcScrollerView){
    int current = scrollView.contentOffset.x/kScreenWidth;
    _pageControl.currentPage = current;
    }
}

#pragma mark - 分页符点击
-(void)pageChange:(UIPageControl *)control{
    CGFloat x = control.currentPage * kScreenWidth;
    [_funcScrollerView setContentOffset:CGPointMake(x,0) animated:YES];
}

最终效果：