UIScrollView 例子
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CGRect wholeWindow = CGRectMake(0.0, 0.0, self.view.frame.size.width, self.view.frame.size.height);UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:wholeWindow];[self.view addSubview:scrollView];[scrollView release];CGRect reallyBigRect;reallyBigRect.origin = CGPointZero;reallyBigRect.size.width = wholeWindow.size.width * 1.2;reallyBigRect.size.height = wholeWindow.size.height * 2.0;[scrollView setContentSize:reallyBigRect.size];CGPoint offset;offset.x = 0.0;offset.y = 0.0;[scrollView setContentOffset:offset];[scrollView setMinimumZoomScale:0.5];[scrollView setMaximumZoomScale:5];[scrollView setDelegate:self];summaryView = [[ProjectSummaryView alloc] initWithFrame:reallyBigRect];[summaryView setBackgroundColor:[UIColor clearColor]];[scrollView addSubview:summaryView];
