[英]Find UILabel bottom position so a second UILabel can be created below
我有一篇我正在創作的新文章。 正在為文章標題添加UILabel
。 標題文本有時可能是一行,兩行或三行文本。 然后我需要在標題下面創建一個UILabel
。
由於標題具有動態高度,因此無法定位日期UILabel
。
是否有計算來獲得我的UILabel
框架的底部位置?
注意:我使用siteToFit
來確保UILabel
的框架適合。
// Text
UILabel *title = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, self.view.bounds.size.width-20, 50)];
//title.backgroundColor = [UIColor clearColor];
title.backgroundColor = [UIColor redColor];
title.text = self.firstItem.title;
//title.text = @"This is a test of a short title that is a little longer";
title.textColor = [UIColor whiteColor];
title.layer.shadowColor = [UIColor blackColor].CGColor;
title.layer.shadowOffset = CGSizeMake(0, 0);
title.layer.shadowRadius = 0.6;
title.textAlignment = NSTextAlignmentLeft;
title.layer.shadowOpacity = 1.0;
title.layer.masksToBounds = NO;
title.font = [UIFont boldSystemFontOfSize:16.0];
title.numberOfLines = 0;
[title sizeToFit];
[self.firstNewsItemBackgroundView addSubview:title];
self.cachedParalax = self.firstNewsItemBackgroundView.frame;
// Fix positioning
title.center = CGPointMake(title.center.x, self.imageView.frame.size.height - title.frame.size.height);
// Date
UILabel *titleDate = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, self.view.bounds.size.width-20, 50)];
titleDate.backgroundColor = [UIColor clearColor];
titleDate.text = self.firstItem.publishedDateString;
titleDate.textColor = [UIColor whiteColor];
titleDate.layer.shadowColor = [UIColor blackColor].CGColor;
titleDate.layer.shadowOffset = CGSizeMake(0, 0);
titleDate.layer.shadowRadius = 0.7;
titleDate.textAlignment = NSTextAlignmentLeft;
titleDate.layer.shadowOpacity = 0.95;
titleDate.layer.masksToBounds = NO;
titleDate.font = [UIFont italicSystemFontOfSize:12.0];
titleDate.numberOfLines = 0;
[title sizeToFit];
[self.firstNewsItemBackgroundView addSubview:titleDate];
// Fix positioning
CGRect frame = titleDate.frame;
titleDate.frame = CGRectMake(10, title.center.y + (title.frame.size.height/2), frame.size.width, frame.size.height);
好吧,看起來你有一個錯字。 您再次調用[title sizeToFit]而不是[titleDate sizeToFit],這可能是問題的一部分。
假設10px空間,請定位日期標簽:
CGRect dateFrame = titleDate.frame;
dateFrame.origin.y = title.frame.origin.y + title.frame.size.height + 10;
[titleDate setFrame:dateFrame]
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