我使用drawInRect:動態構建視圖並在其上打印屬性文本。一些文字可能包含網頁鏈接。如何檢測網頁鏈接上的點擊,以便我可以在UIWebView中加載鏈接?我沒有使用UILabel,UITextView或UITextField來顯示文本,因爲文本包含文本和圖像的混合。在NSAttributedString中檢測鏈接上的水龍頭
這是繪製文本的我的UIView子類的drawRect中的一些代碼。
//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];
感謝您的幫助......
這可能給你一些想法。 http://stackoverflow.com/questions/13888941/nsattributedstring-tappable-ios – sangony
你可以發佈你的代碼?我可以提出一些想法,但這取決於您的自定義視圖的工作方式。 – WolfLink
@WolfLink我編輯了我的帖子以包含我如何繪製文本的代碼。謝謝。 – SeanT