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我試圖複製Safari瀏覽器頁面滾動視圖,它的框架是比iPhone屏幕稍窄。所以根據一些建議,我在「clipView」(450x320點)內放置了滾動視圖(450x280點)。ios-用UIView容器內置UIScrollView與Autolayout編程
//viewController methods
-(void)viewDidAppear:(BOOL)animated{
CGRect pagingScrollViewFrame = self.clipview.frame;
pagingScrollViewFrame.size.width = 280;
NSLog(@"clipview h:%f e w:%f",self.clipview.frame.size.height,self.clipview.frame.size.width);
NSLog(@"scrollview h:%f e w:%f",pagingScrollViewFrame.size.height,pagingScrollViewFrame.size.width);
NSLog(@"center clipview :%@",NSStringFromCGPoint(self.clipview.center));
pagingScrollView = [[UIScrollView alloc] initWithFrame:pagingScrollViewFrame];
NSLog(@"center scrollview:%@",NSStringFromCGPoint(pagingScrollView.center));
pagingScrollView.contentSize = CGSizeMake(pagingScrollViewFrame.size.width *3, pagingScrollViewFrame.size.height);
pagingScrollView.clipsToBounds = NO;
pagingScrollView.center = self.clipview.center;
[clipview addSubview:pagingScrollView];
}
正如你可以看到我有我的滾動視圖的中心,這是轉移20points下來({140} 232)。 我的視圖容器的中心位於{160,232}。
我錯在哪裏?有什麼像我應該玩的內容偏移屬性?這個問題與Autolayout有關嗎?
現在,當我NSlog中心看起來他們有相同的座標{160,232},但是當我運行應用程序時,滾動視圖仍然向下移動20px。 – luca 2013-03-26 22:11:18