使用的是XHScrollMenu和UIPageViewController来构建5个页面:
ViewController1, ViewController2, ViewController3, ViewController4, ViewController5。
XHScrollMenu和UIPageViewController左右滑动均可以控制页面的切换。
一般情况下是正确的。
但如果点击了menu，切换ViewController1，然后再点击menu直接切换至ViewController5。
从ViewController5向右滑动往回切换的时候发现始终会直接切换至ViewController1，而不是ViewController4。
我用一个int变量来标识当前的页面，以此作为跳转的依据，但不起作用，原因是UIPageViewController调用Delegate的时候自动使用了ViewController1。
这可能是UIPageViewController的Bug，或者是一种缓存机制。
它的特点如下:
.
self . pageViewController = [[ UIPageViewController alloc ] initWithTransitionStyle : UIPageViewControllerTransitionStyleScroll navigationOrientation :UIPageViewControllerNavigationOrientationHorizontal options : nil ];
.使用menu来控制切换的代码如下
- ( void)scrollMenuDidSelected:( XHScrollMenu *)scrollMenu menuIndex:( NSUInteger)selectIndex {
[_ pageViewController setViewControllers :[ NSArray arrayWithObject :[self viewControllerAtIndex :selectIndex]] direction :UIPageViewControllerNavigationDirectionForward animated : YES completion : NULL ]
}
最后修改:
- ( void)scrollMenuDidSelected:( XHScrollMenu *)scrollMenu menuIndex:( NSUInteger)selectIndex {
if (selectIndex > _pageIndex) { //前翻或者后翻的条件判断
__block XX ViewController *blocksafeSelf = self;
[ self . pageViewController setViewControllers :[ NSArray arrayWithObject :[ self viewControllerAtIndex :selectIndex]] direction :UIPageViewControllerNavigationDirectionForward animated : YES completion :^( BOOL finished) {
if (finished) {
dispatch_async( dispatch_get_main_queue(), ^{
[blocksafeSelf. pageViewController setViewControllers :[ NSArray arrayWithObject :[blocksafeSelf viewControllerAtIndex :selectIndex]] direction :UIPageViewControllerNavigationDirectionForward animated : NO completion : NULL ]; // bug fix for uipageview controller
});
}
}];
} else {
__block RCOnlineViewController *blocksafeSelf = self;
[ self . pageViewController setViewControllers :[ NSArray arrayWithObject :[ self viewControllerAtIndex :selectIndex]] direction :UIPageViewControllerNavigationDirectionReverse animated : YES completion :^( BOOL finished){
if (finished) {
dispatch_async( dispatch_get_main_queue(), ^{
[blocksafeSelf. pageViewController setViewControllers :[ NSArray arrayWithObject :[blocksafeSelf viewControllerAtIndex :selectIndex]] direction :UIPageViewControllerNavigationDirectionReverse animated : NO completion : NULL ]; // bug fix for uipageview controller
});
}
}];
}
}