UIScrollView
// 2:属性
scrollview1.contentSize = CGSizeMake(414*5, 200);
scrollview1.backgroundColor = [UIColor grayColor];
scrollview1.indicatorStyle = UIScrollViewIndicatorStyleWhite;
scrollview1.bounces = true; // 表明当前滑动是否有反弹效果
scrollview1.pagingEnabled = true; // 分页效果
scrollview1.scrollEnabled = true; // 使当前能够滑动和不能滑动
scrollview1.contentOffset = CGPointMake(414, 0); // 初始位置
...
UILabel *lab = [[UILabel alloc]initWithFrame:CGRectMake(414, 0, 414, 50)];
lab.text = @"Hello";
lab.textColor = [UIColor redColor];
lab.backgroundColor = [UIColor grayColor];
lab.font = [UIFont systemFontOfSize:12.0];
[scrollview1 addSubview:lab];
...
- UIScrollViewDelegate的常用响应方法
- (void)scrollViewDidScroll:(UIScrollView *)scrollView;
-
// 首先声明
...
@interface ViewController ()<UIScrollViewDelegate>
...
...
scrollview1.delegate = self;
...
...
/**
滚动的时候就不停回调
1、精度很高
2、滚动坐标：使用场景
3、并不是线性增长
@param scrollView 监听的scrollview
*/
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
float x = scrollView.contentOffset.x;
NSLog(@"x%f",x);
}
/**
大图展示
1、UIScrollView 对象
2、UIImageView
3、UIImageView->UIScrollView
4、UIScrollView->self.view
*/
-(void)scrollview2 {
// 如果frame和contentsize 相等，就不能滚动;
UIScrollView *scrollview1 = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 100, 414, 200)];
scrollview1.contentSize = CGSizeMake(1440, 900);
UIImageView *imageview = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 1440, 900)];
imageview.image = [UIImage imageNamed:@"5.jpg"];
scrollview1.backgroundColor = [UIColor grayColor];
[scrollview1 addSubview:imageview];
[self.view addSubview:scrollview1];
}
