// ScrollViewViewController.m
// ScrollView
#import"ScrollViewViewController.h"
#import"CustomA.h"
#import"CustomB.h"
@implementationScrollViewViewController
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have
a superview.
[superdidReceiveMemoryWarning];
// Release any cached data, images, etc
that aren't in use.
}
#pragma mark - View lifecycle
// Implement viewDidLoad to do additional setup after
loading the view, typically from a nib.
- (void)viewDidLoad
{
scrollview=[[UIScrollViewalloc]initWithFrame:CGRectMake(50,0,200,400)];
scrollview.contentSize=CGSizeMake(400,400);
scrollview.backgroundColor=[UIColororangeColor];
scrollview.pagingEnabled=YES;//是否自己动适应
viewA=[[CustomAalloc]initWithFrame:CGRectMake(50,0,100,400)];
viewA.backgroundColor=[UIColorblueColor];
[scrollviewaddSubview:viewA];
[viewA release];
CustomB* viewB=[[CustomBalloc]initWithFrame:CGRectMake(250,0,100,400)];
viewB.backgroundColor=[UIColoryellowColor];
[scrollview addSubview:viewB];
[viewB release];
[self.viewaddSubview:scrollview];
scrollview.maximumZoomScale=2.0;
scrollview.minimumZoomScale=0.5;
// scrollview.decelerationRate=1;
scrollview.delegate=self;
//canCancelContentTouches:YES-移动手指足够长度触发滚动事件,NO-scrollView发生tracking
events后，就算用户移动手指，scrollView也不会滚动。
scrollview.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，scrollview会立即触发
scrollview.delaysContentTouches=YES;
[scrollviewrelease];
[superviewDidLoad];
}
#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
- (void)scrollViewDidEndDecelerating:(UIScrollView*)scrollView;
{
NSLog(@"scrollViewDidEndDecelerating");
}
//滚动动画停止时执行,代码改变时触发,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");
returnviewA;
}
//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");
returnYES;
}
- (void)scrollViewDidScrollToTop:(UIScrollView*)scrollView;
{
NSLog(@"scrollViewDidScrollToTop");
}
- (void)viewDidUnload
{
[superviewDidUnload];
// Release any retained subviews of the
main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return(interfaceOrientation ==
UIInterfaceOrientationPortrait);
}
@end
