![if ([self.traitCollection
respondsToSelector:@selector(forceTouchCapability)] &&
self.traitCollection.forceTouchCapability ==UIForceTouchCapabilityAvailable)
{
self.previewingContext =
[self registerForPreviewingWithDelegate:self sourceView:self.collectionView];
}](https://image.slidesharecdn.com/3dtouchtips-151217013716/85/Enhancements-with-3D-Touch-14-320.jpg)
![- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
viewControllerForLocation:(CGPoint)location {
UICollectionView *collectionView = self.collectionView;
NSIndexPath *indexPath = [collectionView indexPathForItemAtPoint:location];
if (!indexPath) {
return nil;
}
if (![self collectionView:collectionView shouldSelectItemAtIndexPath:indexPath]) {
return nil;
}
UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
previewingContext.sourceRect = cell.frame;
// [...]
}](https://image.slidesharecdn.com/3dtouchtips-151217013716/85/Enhancements-with-3D-Touch-16-320.jpg)
![- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
viewControllerForLocation:(CGPoint)location {
// [...]
UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
previewingContext.sourceRect = cell.frame;
[cell resetAllGestures]; // <-
// [...]
}
// [...]
- (void)resetAllGestures {
NSMutableArray *gestures =
[NSMutableArray arrayWithArray:self.tileItemView.gestureRecognizers];
[gestures addObjectsFromArray:self.listItemView.gestureRecognizers];
for (UIGestureRecognizer *recognizer in gestures) {
recognizer.enabled = NO;
recognizer.enabled = YES;
}
}](https://image.slidesharecdn.com/3dtouchtips-151217013716/85/Enhancements-with-3D-Touch-19-320.jpg)
Enhancements with 3D Touch
- 4. ? ? ? ? ?
- 8. ?
- 9. ? ?
- 12. ? ? ?
- 14. if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)] && self.traitCollection.forceTouchCapability ==UIForceTouchCapabilityAvailable) { self.previewingContext = [self registerForPreviewingWithDelegate:self sourceView:self.collectionView]; }
- 16. - (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location { UICollectionView *collectionView = self.collectionView; NSIndexPath *indexPath = [collectionView indexPathForItemAtPoint:location]; if (!indexPath) { return nil; } if (![self collectionView:collectionView shouldSelectItemAtIndexPath:indexPath]) { return nil; } UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath]; previewingContext.sourceRect = cell.frame; // [...] }
- 17. ? ?
- 19. - (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext viewControllerForLocation:(CGPoint)location { // [...] UICollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath]; previewingContext.sourceRect = cell.frame; [cell resetAllGestures]; // <- // [...] } // [...] - (void)resetAllGestures { NSMutableArray *gestures = [NSMutableArray arrayWithArray:self.tileItemView.gestureRecognizers]; [gestures addObjectsFromArray:self.listItemView.gestureRecognizers]; for (UIGestureRecognizer *recognizer in gestures) { recognizer.enabled = NO; recognizer.enabled = YES; } }
- 21. ? ? ? ?