根据文字 字数动态确定Label宽高
//设置Label的字体 HelveticaNeue Courier UIFont *fnt = [UIFont fontWithName:@"HelveticaNeue" size:24.0f]; _nameLabel.font = fnt; //根据字体得到NSString的尺寸 CGSize size = [_nameLabel.text sizeWithAttributes:[NSDictionary dictionaryWithObjectsAndKeys:fnt,NSFontAttributeName, nil]]; //名字的高度 CGFloat nameH = size.height; //名字的宽度 CGFloat nameW = size.width;
//重新给Label的frame赋值 _nameLabel.frame = CGRectMake(0, 0, nameW,nameH);
根据正文内容多少,动态确定正文content的frame
// 宽度W
CGFloat contentW = self.bounds.size.width - _content.frame.origin.x - kMargin; // label的字体 HelveticaNeue Courier UIFont *fnt = [UIFont fontWithName:@"HelveticaNeue" size:18.0f]; _content.font = fnt; _content.numberOfLines = 0; _content.lineBreakMode = NSLineBreakByWordWrapping; // iOS7中用以下方法替代过时的iOS6中的sizeWithFont:constrainedToSize:lineBreakMode:方法 CGRect tmpRect = [_content.text boundingRectWithSize:CGSizeMake(contentW, 1000) options:NSStringDrawingUsesLineFragmentOrigin attributes:[NSDictionary dictionaryWithObjectsAndKeys:fnt,NSFontAttributeName, nil] context:nil]; // 高度H CGFloat contentH = tmpRect.size.height; NSLog(@"调整后的显示宽度:%f,显示高度:%f"contentW,contentH); _content.frame = CGRectMake(0, 0, contentW,contentH);