问题
Now I already detect long tap in UITextView
- (void)viewDidLoad
{
[super viewDidLoad];
UILongPressGestureRecognizer *LongPressgesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPressFrom:)];
[[self textview] addGestureRecognizer:LongPressgesture];
longPressGestureRecognizer.delegate = self;
}
- (void) handleLongPressFrom: (UISwipeGestureRecognizer *)recognizer
{
CGPoint location = [recognizer locationInView:self.view];
NSLog(@"Tap Gesture Coordinates: %.2f %.2f", location.x, location.y);
}
Now, How should I do to get content of word which got long press, and get a rect of that word to prepare to show the PopOver?
回答1:
This function will return the word at a given position in an UITextView.
+(NSString*)getWordAtPosition:(CGPoint)pos inTextView:(UITextView*)_tv
{
//eliminate scroll offset
pos.y += _tv.contentOffset.y;
//get location in text from textposition at point
UITextPosition *tapPos = [_tv closestPositionToPoint:pos];
//fetch the word at this position (or nil, if not available)
UITextRange * wr = [_tv.tokenizer rangeEnclosingPosition:tapPos withGranularity:UITextGranularityWord inDirection:UITextLayoutDirectionRight];
return [_tv textInRange:wr];
}
回答2:
SWIFT 4
A copy of @cayeric's answer written in swift for your convenience.
func getWord(at position: CGPoint, in textView: UITextView) -> String?{
var point = position
//eliminate scroll offset
point.y += textView.contentOffset.y
//get location in text from textposition at point
guard let tapPos = textView.closestPosition(to: point) else {
return nil
}
//fetch the word at this position (or nil, if not available)
guard let wordRange = textView.tokenizer.rangeEnclosingPosition(tapPos, with: .word, inDirection: UITextWritingDirection.rightToLeft.rawValue) else {
return nil
}
return textView.text(in: wordRange)
}
来源:https://stackoverflow.com/questions/11349459/get-word-from-long-tap-in-a-word-of-uitextview