xcode 使 UIScrollview 滚动
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make UIScrollview scroll
提问by Csabi
I have porblem that my UIScrollViewdoes not scroll I don't think that is a problem with iphone emulator. Here is my way to construct UIScrollView:
我有UIScrollView不滚动的问题，我认为这不是 iphone 模拟器的问题。这是我的构建方式UIScrollView：
[scrollView setBackgroundColor:[UIColor blackColor]];
[scrollView setCanCancelContentTouches:NO];
scrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;
scrollView.clipsToBounds = YES; // default is NO, we want to restrict drawing within our scrollview
scrollView.scrollEnabled = YES;
and I add UILabelto it, to which later I add some info from xml.
然后我添加UILabel到它，稍后我从 xml 添加一些信息。
labeL = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 1000)];
labeL.numberOfLines = 0;
labeL.text =@"";
[scrollView addSubview:labeL];
this is how I add value to UILabel:
这就是我增加价值的方式UILabel：
vypisObratString = [[NSMutableString alloc] initWithString:labeL.text];
if (turnOver) {
turnOver = NO;
[vypisObratString appendString:@"----------------"];
[vypisObratString appendString:@"\n"];
labeL.text = vypisObratString;
}
But when I compile the program it writes the corect values but the last line is like this:
但是当我编译程序时，它会写入正确的值，但最后一行是这样的：
12.1.2010...
and it does not scroll. Why? What I missing?
它不会滚动。为什么？我错过了什么？
回答by James Lelyveld
I think your issue is with setting the size of the scroll view which needs to be larger than the size of the iphone (i.e. it needs to know that there is some area outside the phone display to scroll to). Something along these lines:
我认为您的问题是设置滚动视图的大小，该大小需要大于 iphone 的大小（即它需要知道手机显示屏之外有一些区域可以滚动到）。沿着这些路线的东西：
UIScrollView *tempScrollView=(UIScrollView *)self.view;
tempScrollView.contentSize=CGSizeMake(800,800);
That should be all you need to make it scroll.
这应该是您让它滚动所需的全部内容。
Cheers
干杯
James
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