我使用drawInRect:动态构建视图并在其上打印属性文本。一些文字可能包含网页链接。如何检测网页链接上的点击,以便我可以在UIWebView中加载链接?我没有使用UILabel,UITextView或UITextField来显示文本,因为文本包含文本和图像的混合。在NSAttributedString中检测链接上的水龙头
这是绘制文本的我的UIView子类的drawRect中的一些代码。
//draw the text
NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:self.message.text];
[attString beginEditing];
NSArray *arrString = [attString.string componentsSeparatedByString:@" "];
for (NSString *str in arrString)
{
if ([str rangeOfString:@"http://" options:NSCaseInsensitiveSearch].location != NSNotFound ||
[str rangeOfString:@".com" options:NSCaseInsensitiveSearch].location != NSNotFound ||
[str rangeOfString:@".gov" options:NSCaseInsensitiveSearch].location != NSNotFound ||
[str rangeOfString:@".org" options:NSCaseInsensitiveSearch].location != NSNotFound ||
[str rangeOfString:@".edu" options:NSCaseInsensitiveSearch].location != NSNotFound ||
[str rangeOfString:@".net" options:NSCaseInsensitiveSearch].location != NSNotFound ||
[str rangeOfString:@".xxx" options:NSCaseInsensitiveSearch].location != NSNotFound)
{
NSRange rng = [attString.string rangeOfString:str];
NSString *url;
if ([str rangeOfString:@"http://" options:NSCaseInsensitiveSearch].location == NSNotFound &&
[str rangeOfString:@"https://" options:NSCaseInsensitiveSearch].location == NSNotFound)
{
url = [NSString stringWithFormat:@"http://%@", str];
}
else
{
url = str;
}
[attString addAttribute:NSLinkAttributeName value:[NSURL URLWithString:url] range:rng];
}
}
[attString endEditing];
CGSize theSize;
theSize = [attString.string sizeWithFont:[UIFont systemFontOfSize:14.0f] constrainedToSize:CGSizeMake(CHAT_TEXT_WIDTH, FLT_MAX) lineBreakMode:NSLineBreakByWordWrapping];
[[UIColor blackColor] set];
CGRect textRect = CGRectMake(0, 0, theSize.width, theSize.height);
textRect.origin.x += 10;
textRect.origin.y += 10;
if (self.type == MESSAGE_BOX_RECEIVE) {
textRect.origin.x += ARROW_WIDTH;
}
[attString drawInRect:textRect];
感谢您的帮助......
这可能给你一些想法。 http://stackoverflow.com/questions/13888941/nsattributedstring-tappable-ios – sangony
你可以发布你的代码?我可以提出一些想法,但这取决于您的自定义视图的工作方式。 – WolfLink
@WolfLink我编辑了我的帖子以包含我如何绘制文本的代码。谢谢。 – SeanT