中的UITextView

Question

的搭話從長按字

現在我已經發現長按中的UITextView現在

- (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); 
    } 

，我應該怎麼做才能讓字其中有長按的內容，並獲得一個矩形準備展示PopOver的單詞？

Answer 1

該函數將返回UITextView中給定位置的單詞。

+(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]; 
}