ios - パン UIGesture をスワイプ ジェスチャに変換する

Question

ユーザーが特定のセル上で指をパンすると、ユーザーの x 軸に応じてセルの色が変わります。パン ジェスチャからスワイプに変更するにはどうすればよいでしょうか。パンする代わりに、セルをスワイプするとその背後の色が表示されるように構築したいと思います。ユーザーが指を離すと、セルは所定の位置に戻ります。任意のヒント？

  @synthesize _panRecognizer;

- (id)initWithReuseIdentifier:(NSString *)reuseIdentifier
 {
if (self = [super initWithStyle:UITableViewCellStyleDefault reuseIdentifier:reuseIdentifier])
{
    NSInteger emoteY = floor((self.frame.size.height - 32) / 2);

    _panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(respondToPanGesture:)];
    [_panRecognizer setDelegate:self];
    [_panRecognizer setMinimumNumberOfTouches:1];
    [_panRecognizer setMaximumNumberOfTouches:1];
    [self addGestureRecognizer:_panRecognizer];

 //        [[self textLabel] setFont:[UIFont boldSystemFontOfSize:18.0]];
    [[self textLabel] setFont:[UIFont systemFontOfSize:24.0]];
    [self setSelectionStyle:UITableViewCellSelectionStyleNone];

    _border = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 5, self.frame.size.height)];
    [self addSubview:_border];

    _rightEmote = [[UIImageView alloc] initWithFrame:CGRectMake(self.frame.size.width - 42, emoteY, 32, 32)];
    [self addSubview:_rightEmote];

    _leftEmote = [[UIImageView alloc] initWithFrame:CGRectMake(-32, emoteY, 32, 32)];
    [self addSubview:_leftEmote];
}

return self;
}

 - (void)setFrame:(CGRect)frame
 {
      [super setFrame:frame];

CGRect borderFrame = _border.frame,
rightEmoteFrame = _rightEmote.frame,
leftEmoteFrame = _leftEmote.frame;

NSInteger emoteY = floor((self.frame.size.height - 32) / 2);

borderFrame.size.height = self.frame.size.height;
rightEmoteFrame.origin.y = emoteY;
leftEmoteFrame.origin.y = emoteY;

[_border setFrame:borderFrame];
[_rightEmote setFrame:rightEmoteFrame];
[_leftEmote setFrame:leftEmoteFrame];
}

 - (DDFactor *)factor
{
    return _factor;
 }

 - (void)setFactor:(DDFactor *)factor
 {
_factor = factor;

}

- (void)respondToPanGesture:(UIGestureRecognizer *)recognizer
 {
 //    NSLog(@"%lu", [recognizer state]);

NSInteger rstate = [recognizer state];
CGFloat touchX = 0.0;

if ([recognizer numberOfTouches] == 1)
{
    touchX = [recognizer locationOfTouch:0 inView:self].x;

    if (rstate == UIGestureRecognizerStateBegan)
    {
        /*
         animate to color under touch
         */

        CGRect labelFrame = [self textLabel].frame;
        labelFrame.origin.x += 42;

        CGRect rightEmoteFrame = _rightEmote.frame;
        rightEmoteFrame.origin.x += 42;
        CGRect leftEmoteFrame = _leftEmote.frame;
        leftEmoteFrame.origin.x += 42;

        [UIView animateWithDuration:0.3 animations:^{
            [_border setAlpha:0.0];
            [[self textLabel] setTextColor:[UIColor whiteColor]];
            [[self textLabel] setFrame:labelFrame];
            [_rightEmote setFrame:rightEmoteFrame];
            [_leftEmote setFrame:leftEmoteFrame];
        }];
        [self animateEmoticonsWithColor:NO duration:0.3];
    }
    else if (rstate == UIGestureRecognizerStateChanged)
    {
        /*
         alter color
         trigger emote animation if necessary
         */

        if ([self responseForTouchPosition:touchX] != _responseValue)
        {
            [self setResponseValue:[self responseForTouchPosition:touchX]];
            [_border setBackgroundColor:[UIColor colorForResponse:_responseValue]];
            [self animateToBackgroundColor:[UIColor colorForResponse:_responseValue]];
            [self animateEmoticonsWithColor:NO duration:0.2];
        }
    }
}
else if (([recognizer numberOfTouches] == 0) && (rstate == 3))
{
    CGRect labelFrame = [self textLabel].frame;
    labelFrame.origin.x -= 42;

    CGRect rightEmoteFrame = _rightEmote.frame;
    rightEmoteFrame.origin.x -= 42;
    CGRect leftEmoteFrame = _leftEmote.frame;
    leftEmoteFrame.origin.x -= 42;

    [UIView animateWithDuration:0.3 animations:^{
        [_border setAlpha:1.0];
        [_rightEmote setFrame:rightEmoteFrame];
        [_leftEmote setFrame:leftEmoteFrame];
        [[self textLabel] setFrame:labelFrame];
        [[self textLabel] setTextColor:[UIColor colorForResponse:_responseValue]];
        [self setBackgroundColor:[[UIColor colorForResponse:_responseValue] colorWithAlphaComponent:0.1]];
    }];
    [self animateEmoticonsWithColor:YES duration:0.3];
}

}

 - (void)setSelected:(BOOL)selected animated:(BOOL)animated
 {
[super setSelected:selected animated:animated];

// Configure the view for the selected state
 }

- (DDResponseValue)responseForTouchPosition:(CGFloat)x
 {
DDResponseValue response;

if (x <= 70) response = DDResponseGrin;
else if (x <= 120) response = DDResponseSmile;
else if (x <= 170) response = DDResponseSad;
else if (x <= 220) response = DDResponseNervous;
else if (x <= 270) response = DDResponseRefusal;
else response = DDResponseNeutral;

return response;
 }