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    <p>If you prefer animation that behaves more like a scroll view (i.e., with continuous feedback on the gesture), it might look something like the following:</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panHandler:)]; [self.view addGestureRecognizer:pan]; self.label1.text = @"Mo"; } - (void)panHandler:(UIPanGestureRecognizer *)sender { if (sender.state == UIGestureRecognizerStateBegan) { _panLabel = [[UILabel alloc] init]; // in my example, I'm just going to toggle the value between Mo and Curly // you'll presumably set the label contents based upon the direction of the // pan (if positive, swiping to the right, grab the "previous" label, if negative // pan, grab the "next" label) if ([self.label1.text isEqualToString:@"Curly"]) _newText = @"Mo"; else _newText = @"Curly"; // set the text _panLabel.text = _newText; // set the frame to just be off screen _panLabel.frame = CGRectMake(self.label1.frame.origin.x + self.containerView.frame.size.width, self.label1.frame.origin.y, self.label1.frame.size.width, self.label1.frame.size.height); [self.containerView addSubview:_panLabel]; _originalCenter = self.label1.center; // save where the original label originally was } else if (sender.state == UIGestureRecognizerStateChanged) { CGPoint translate = [sender translationInView:self.containerView]; if (translate.x &gt; 0) { _panLabel.center = CGPointMake(_originalCenter.x - self.containerView.frame.size.width + translate.x, _originalCenter.y); self.label1.center = CGPointMake(_originalCenter.x + translate.x, _originalCenter.y); } else { _panLabel.center = CGPointMake(_originalCenter.x + self.containerView.frame.size.width + translate.x, _originalCenter.y); self.label1.center = CGPointMake(_originalCenter.x + translate.x, _originalCenter.y); } } else if (sender.state == UIGestureRecognizerStateEnded || sender.state == UIGestureRecognizerStateFailed || sender.state == UIGestureRecognizerStateCancelled) { CGPoint translate = [sender translationInView:self.containerView]; CGPoint finalNewFieldLocation; CGPoint finalOriginalFieldLocation; BOOL panSucceeded; if (sender.state == UIGestureRecognizerStateFailed || sender.state == UIGestureRecognizerStateCancelled) { panSucceeded = NO; } else { // by factoring in the velocity, we can capture a flick more accurately // // (by the way, I don't like iOS's velocity, because if you stop moving, it records the velocity // prior to stopping the move rather than noting that you actually stopped, so I usually calculate my own, // but I'll leave this as is for purposes of this example) CGPoint velocity = [sender velocityInView:self.containerView]; if (translate.x &lt; 0) panSucceeded = ((translate.x + velocity.x * 0.5) &lt; -(self.containerView.frame.size.width / 2)); else panSucceeded = ((translate.x + velocity.x * 0.5) &gt; (self.containerView.frame.size.width / 2)); } if (panSucceeded) { // if we succeeded, finish moving the stuff finalNewFieldLocation = _originalCenter; if (translate.x &lt; 0) finalOriginalFieldLocation = CGPointMake(_originalCenter.x - self.containerView.frame.size.width, _originalCenter.y); else finalOriginalFieldLocation = CGPointMake(_originalCenter.x + self.containerView.frame.size.width, _originalCenter.y); } else { // if we didn't, then just return everything to where it was finalOriginalFieldLocation = _originalCenter; if (translate.x &lt; 0) finalNewFieldLocation = CGPointMake(_originalCenter.x + self.containerView.frame.size.width, _originalCenter.y); else finalNewFieldLocation = CGPointMake(_originalCenter.x - self.containerView.frame.size.width, _originalCenter.y); } // animate the moving of stuff to their final locations, and on completion, clean everything up [UIView animateWithDuration:0.3 delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{ _panLabel.center = finalNewFieldLocation; self.label1.center = finalOriginalFieldLocation; } completion:^(BOOL finished) { if (panSucceeded) self.label1.text = _newText; self.label1.center = _originalCenter; [_panLabel removeFromSuperview]; _panLabel = nil; // in non-ARC, release instead } ]; } } </code></pre> <p>Note, I have put both the original label, as well as the new label being panned on, in a container UIView (called containerView, surprisingly enough), so that I can clip the animation to that container.</p>
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