iOS-UISegmentedControl和UIScrollV

一.声明属性和代理

    <UIScrollViewDelegate>
@property(nonatomic,strong)UISegmentedControl * segmentedControl;
@property(nonatomic,strong)UIScrollView *bgScroll;
@property(nonatomic,strong) UIView *bgView ;
@property(nonatomic,strong) UIView *bgView1 ;
@property(nonatomic,strong) UIView *bgView2;

二.实现

    #pragma mark - content内容
- (void)creatContent{
    NSArray *segmentedArray = [[NSArray alloc]initWithObjects:@"实时数据",@"数据总览",@"评估报告",nil];
    //初始化UISegmentedControl
    self.segmentedControl = [[UISegmentedControl alloc]initWithItems:segmentedArray];
    self.segmentedControl.frame = CGRectMake(30, HEIGHT*0.12, WIDTH-60, 30);
    self.segmentedControl.selectedSegmentIndex = 0;
    self.segmentedControl.tintColor = [UIColor whiteColor];
   
    NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor],NSForegroundColorAttributeName,[UIFont fontWithName:@"Helvetica" size:16] ,NSFontAttributeName,nil];
    [self.segmentedControl setTitleTextAttributes:dic forState:UIControlStateNormal];
    NSDictionary *dic1 = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor blueColor],NSForegroundColorAttributeName,[UIFont fontWithName:@"Helvetica" size:16] ,NSFontAttributeName,nil];
    [self.segmentedControl setTitleTextAttributes:dic1 forState:UIControlStateSelected];

    [self.segmentedControl addTarget:self action:@selector(segmentedClick:) forControlEvents:UIControlEventValueChanged];
    
    [self.view addSubview:self.segmentedControl];
    
}

- (void)segmentedClick:(UISegmentedControl *)sender{
    NSInteger index = sender.selectedSegmentIndex;
    switch (index) {
        case 0:
        {
            self.bgScroll.contentOffset = CGPointMake(0, 0);

        }
            break;
        case 1:
        {
            self.bgScroll.contentOffset = CGPointMake(WIDTH, 0);
        }
            break;
        case 2:
        {
            self.bgScroll.contentOffset = CGPointMake(WIDTH * 2, 0);

        }
            break;
    }
  
}


- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    [UIView animateWithDuration:1 animations:^{
        self.segmentedControl.selectedSegmentIndex = (scrollView.contentOffset.x + (WIDTH-20)*0.5)/(WIDTH-20);
    }];
}


- (void)createBottomLayer{
    self.bgScroll = [[UIScrollView alloc]initWithFrame:CGRectMake(0, HEIGHT*0.12 + 30 + 15, WIDTH, HEIGHT*0.88 -45)];
    self.bgScroll.pagingEnabled= YES;
    self.bgScroll.delegate = self;
    self.bgScroll.bounces = NO;
    self.bgScroll.contentSize = CGSizeMake(WIDTH*3, 0);
    [self.view addSubview:self.bgScroll];
    
    self.bgView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, WIDTH, HEIGHT*0.88 - 45)];
    self.bgView.backgroundColor = [UIColor clearColor];
    [self.bgScroll addSubview:self.bgView];
    
    self.bgView1 = [[UIView alloc]initWithFrame:CGRectMake(WIDTH, 0, WIDTH, HEIGHT*0.88 - 45)];
    self.bgView1.backgroundColor = [UIColor yellowColor];
    self.bgView1.alpha = 0.7;
    [self.bgScroll addSubview:self.bgView1];
    
    self.bgView2 = [[UIView alloc]initWithFrame:CGRectMake(WIDTH*2, 0, WIDTH, HEIGHT*0.88 - 45)];
    self.bgView2.backgroundColor = [UIColor purpleColor];
    self.bgView2.alpha = 0.5;
    [self.bgScroll addSubview:self.bgView2];
}