iphone – 我想将UIButton移动到特定位置,就像在网格上一样

- (void)callMarkerFourteen
{

    UIImage *image = [UIImage imag@R_607_8371@d:@"VerticalLine.png"];

    markerViewFourteen = [[UIView alloc] initWithFrame:CGRectMake(160,210,40,image.size.height)];
    [markerViewFourteen setBACkgroundColor:[UIColor colorWithRed:255 green:0 blue:0 alpha:.5]];
    markerImageViewFourteen = [[UIImageView alloc] initWithFrame:[markerViewFourteen frame]];
    [markerImageViewFourteen setFrame:CGRectMake(18,4,100)];
    [markerImageViewFourteen setImage:image];
    [markerViewFourteen addSubview:markerImageViewFourteen];

    UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@SELEctor(move:)];
    [panRecognizer setMinimumnumberOfTouches:1];
    [panRecognizer setMaximumnumberOfTouches:1];
    [panRecognizer setDelegate:self];
    [markerViewFourteen addGestureRecognizer:panRecognizer];

    [self.view addSubview:markerViewFourteen];
}


-(void)move:(id)sender {

    [[[(UITapGestureRecognizer*)sender view] layer] removeAllAnimations];

    [self.view bringSubviewToFront:[(UIPanGestureRecognizer*)sender view]];
    CGPoint translatedPoint = [(UIPanGestureRecognizer*)sender translationInView:self.view];

    if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateBegan) {

        firstX = [[sender view] center].x;
        firstY = [[sender view] center].y;
    }

    translatedPoint = CGPointMake(firstX+translatedPoint.x,firstY+translatedPoint.y);

    [[sender view] setCenter:translatedPoint];

    if([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {

        CGFloat finalX = translatedPoint.x + (0.0*[(UIPanGestureRecognizer*)sender veLocityInView:self.view].X);
        CGFloat finalY = translatedPoint.y + (0.0*[(UIPanGestureRecognizer*)sender veLocityInView:self.view].y);

        if(UIDeviceOrientationIsPorTrait([[UIDevice currentDevice] orientation])) {

            if(finalX < 0) {                                
                finalX = 0;             
            }                           
            else if(finalX > 640) {

                finalX = 640;
            }

            if(finalY < 0) {                                
                finalY = 0;             
            }                       
            else if(finalY > 960) {

                finalY = 960;
            }
        }

        else {

            if(finalX < 0) {                                
                finalX = 0;             
            }                       
            else if(finalX > 960) {

                finalX = 640;
            }

            if(finalY < 0) {                                
                finalY = 0;             
            }                       
            else if(finalY > 640) {

                finalY = 960;
            }
        }

        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:.35];
        [UIView setAnimationCurve:UIViewAnimationCurveEaSEOut];
        [[sender view] setCenter:CGPointMake(finalX,finalY)];
        [UIView commitAnimations];
    }
}