从UITextView的单词中获取单词 [英] Get word from long tap in a word of UITextView
本文介绍了从UITextView的单词中获取单词的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
现在我已经在UITextView中检测到长按
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);
}
现在,我该如何获取长按的单词内容,并获得该单词的矩形以准备显示PopOver?
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?
推荐答案
此函数将返回UITextView中给定位置的单词。
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];
}
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