iOS复习UIScoreView

- (void)viewDidLoad
{
    [superviewDidLoad];
    
    UIScrollView *scrollview =[[UIScrollView alloc]initWithFrame:CGRectMake(50,0,200,400)];
    scrollview.contentSize=CGSizeMake(200,3800);//滑动的范围
    scrollview.backgroundColor=[UIColorblueColor];
    scrollview.directionalLockEnabled = YES;//这句话需要查查什么意思，注释也可以用
    scrollview.pagingEnabled=YES;//是否自己动适应
    [self.view addSubview:scrollview];
    UITextField  *viewA=[[UITextFieldalloc]initWithFrame:CGRectMake(50,0,200,800)];
    viewA.textColor = [UIColor redColor];
    viewA.text = @"213";
    //viewA.backgroundColor=[UIColor blueColor];
    [scrollview addSubview:viewA];
    
//    UIScrollView *sv  = [[UIScrollView alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.frame.size.width, 400)];
//    sv.pagingEnabled = YES;//可以拖动
//    sv.maximumZoomScale=2.0;
//    sv.minimumZoomScale=0.5;
//    sv.backgroundColor = [UIColor blueColor];//设置背景颜色
//    sv.showsVerticalScrollIndicator = NO;//是否显示水平拖动条
//    sv.showsHorizontalScrollIndicator = NO;//是否显示竖直拖动条
//    sv.delegate = self;
//    CGSize newSize = CGSizeMake(self.view.frame.size.width * 2,  self.view.frame.size.height);
//    
//    //canCancelContentTouches:YES-移动手指足够长度触发滚动事件,NO-scrollView发送 tracking events 后，就算用户移动手指，scrollView也不会滚动。
//    sv.canCancelContentTouches=NO;
//    //当值是 YES的时候，用户触碰开始.要延迟一会，看看是否用户有意图滚动。假如滚动了，那么捕捉 touch-down事件，否则就不捕捉。假如值是NO，当用户触碰， scroll view会立即触发
//    sv.delaysContentTouches=YES;
//    //ContentSize的意思就是它所有内容的大小，这个和它的Frame是不一样的，只有ContentSize的大小大于Frame这样才可以支持拖动。
//    [sv setContentSize:newSize];
//    [self.view addSubview: sv];
//    
//    UITextView *textView=[[UITextView alloc]initWithFrame:CGRectMake(200, 200, 400, 400)];
//    textView.text=@"dsfjkhdhskjfhkj";
//    textView.font=[UIFont systemFontOfSize:100];
//    [self.view addSubview:textView];
//    //为什么不可以拖动，还有很多注意点
 
}
 
//#pragma mark UIScrollViewDelegate
////只要滚动了就会触发
//- (void)scrollViewDidScroll:(UIScrollView *)scrollView;
//{
//    //    NSLog(@" scrollViewDidScroll");
//    NSLog(@"ContentOffset  x is  %f,yis %f",scrollView.contentOffset.x,scrollView.contentOffset.y);
//}
////开始拖拽视图
//- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView;
//{
//    NSLog(@"scrollViewWillBeginDragging");
//}
////完成拖拽
//- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate;
//{
//    NSLog(@"scrollViewDidEndDragging");
//}
////将开始降速时
//- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView;
//{
//    NSLog(@"scrollViewWillBeginDecelerating");
//}
//
////减速停止了时执行，手触摸时执行执行
//- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView;
//{
//    NSLog(@"scrollViewDidEndDecelerating");
//}
////滚动动画停止时执行,代码改变时出发,也就是setContentOffset改变时
//- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView;
//{
//    NSLog(@"scrollViewDidEndScrollingAnimation");
//}
////设置放大缩小的视图，要是uiscrollview的subview
//- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView;
//{
//    NSLog(@"viewForZoomingInScrollView");
//    return viewA;
//}
////完成放大缩小时调用
//- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale;
//{
//    viewA.frame=CGRectMake(50,0,100,400);
//    NSLog(@"scale between minimum and maximum. called after any 'bounce' animations");
//}// scale between minimum and maximum. called after any 'bounce' animations
//
////如果你不是完全滚动到滚轴视图的顶部，你可以轻点状态栏，那个可视的滚轴视图会一直滚动到顶部，那是默认行为，你可以通过该方法返回NO来关闭它
//- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView;
//{
//    NSLog(@"scrollViewShouldScrollToTop");
//    return YES;
//}
//
//- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView;
//{
//    NSLog(@"scrollViewDidScrollToTop");
//}
//
//- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
//{
//    // Return YES for supported orientations
//    return (interfaceOrientation == UIInterfaceOrientationPortrait);
//}
 
 
这个也是简单的实现，还需要深入了解，这些都是前几天复习写的，后来整理的，原本没打算写博客
              2013年8月7日，12：36，东南大学无锡分校桃园3宿舍106室