[英]Tap gesture to part of a UITextView
I have this code: 我有这个代码:
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapResponse)];
singleTap.numberOfTapsRequired = 1;
[_textView addGestureRecognizer:singleTap];
This will react to the entire UITextView, but is it possible to change it so that it only responds to when a certain part of the string in the UITextView is tapped? 这将对整个UITextView做出反应,但是是否可以更改它,使其仅在敲击UITextView中的字符串的特定部分时才响应? Like a URL for example?
例如网址?
You cannot assign tap gesture to particular string in normal UITextView. 您无法在普通的UITextView中将敲击手势指定给特定字符串。 You can probably set the dataDetectorTypes for UITextView.
您可以为UITextView设置dataDetectorTypes。
textview.dataDetectorTypes = UIDataDetectorTypeAll;
If you want to detect only urls, you can assign to, 如果您只想检测网址,则可以分配给
textview.dataDetectorTypes = UIDataDetectorTypeLink;
Check the documentation for more details on this: UIKit DataTypes Reference . 有关更多详细信息,请查阅文档: UIKit DataTypes Reference 。 Also check this Documentation on UITextView
还要在UITextView上查看此文档
Update: 更新:
Based on your comment, check like this: 根据您的评论,检查如下:
- (void)tapResponse:(UITapGestureRecognizer *)recognizer
{
CGPoint location = [recognizer locationInView:_textView];
NSLog(@"Tap Gesture Coordinates: %.2f %.2f", location.x, location.y);
NSString *tappedSentence = [self lineAtPosition:CGPointMake(location.x, location.y)];
//use your logic to find out whether tapped Sentence is url and then open in webview
}
- (NSString *)lineAtPosition:(CGPoint)position
{
//eliminate scroll offset
position.y += _textView.contentOffset.y;
//get location in text from textposition at point
UITextPosition *tapPosition = [_textView closestPositionToPoint:position];
//fetch the word at this position (or nil, if not available)
UITextRange *textRange = [_textView.tokenizer rangeEnclosingPosition:tapPosition withGranularity:UITextGranularitySentence inDirection:UITextLayoutDirectionRight];
return [_textView textInRange:textRange];
}
You can try with granularities such as, UITextGranularitySentence, UITextGranularityLine etc.. Check the documentation here. 您可以尝试使用粒度,例如UITextGranularitySentence,UITextGranularityLine等。请在此处查看文档 。
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