Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
425 views
in Technique[技术] by (71.8m points)

objective c - Get word from tap in UITextView

I'm trying to get a word from a tap. The following function's sender is from the UIGesture on the UITextView, sentence.

- (IBAction)printWordSelected:(id)sender {
    NSLog(@"Clicked");

    CGPoint pos = [sender locationInView:self.view];
    UITextView *_tv = sentence;

    NSLog(@"Tap Gesture Coordinates: %.2f %.2f", pos.x, pos.y);

    //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];

    NSLog(@"WORD: %@", [_tv textInRange:wr]);
}

This is what I already have, but it prints the word out as NULL

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

"Try changing pos to pos = [sender locationInView:_tv] and then remove the pos.y adjustment. – rmaddy"


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...