m_Scroll.frame = CGRectMake(0, 0, 320, 480);//重要,设置Srollview控件的位置以及大小属性,
[m_Scroll setBackgroundColor:[UIColor blackColor]];
[m_Scroll setCanCancelContentTouches:NO];
m_Scroll.indicatorStyle = UIScrollViewIndicatorStyleWhite;
m_Scroll.clipsToBounds = YES; // default is NO, we want to restrict drawing within our scrollview
m_Scroll.scrollEnabled = YES;
m_Scroll.pagingEnabled = YES;
//m_Scroll.contentSize = CGSizeMake(4*320, 480);
UIView *view_1 =[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
view_1.backgroundColor = [UIColor blueColor];
UIView *view_2 =[[UIView alloc] initWithFrame:CGRectMake(320, 0, 320, 480)];
view_2.backgroundColor = [UIColor yellowColor];
UIView *view_3 =[[UIView alloc] initWithFrame:CGRectMake(2*320, 0, 320, 480)];
view_3.backgroundColor = [UIColor grayColor];
UIView *view_4 =[[UIView alloc] initWithFrame:CGRectMake(3*320, 0, 320, 480)];
view_4.backgroundColor = [UIColor magentaColor];
[m_Scroll addSubview:view_1];
[m_Scroll addSubview:view_2];
[m_Scroll addSubview:view_3];
[m_Scroll addSubview:view_4];
[view_1 release];
[view_2 release];
[view_3 release];
[view_4 release];
/*
设置UIscrollview内容的大小,
这里需要注意的是第二个参数[m_Scroll bounds].size.height),这样设置就可以保证,不会在纵向因为子试图过大而滚动
我们在使用这个控件的时候,尽量设计好,UIScrollview控件的大小,以及起内容的大小,这样就不会出现不必要的滚动。
*/
[m_Scroll setContentSize:CGSizeMake((320 * 4), [m_Scroll bounds].size.height)];
2:根据内容的Frame属性,设置可视区域(visible area)
[scrollView scrollRectToVisible:CGRectMake(index*SceneWidth, 0, SceneWidth, SceneHeight) animated:YES];
后面的参数是可视区域的Frame属性,我们也可以这样理解,这个方法就是把UIScrollview的视图区域,移动到指定
Frame的可见区域。