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Toque 3D con Swift
El toque 3D ha sido introducido con iPhone 6s Plus. Hay dos comportamientos agregados con esta nueva capa de interfaz: Peek y Pop.
Peek y Pop en pocas palabras
Ojeada - Presione fuerte
Pop - Presiona muy fuerte
Comprobando el soporte 3D
Debe comprobar si el dispositivo tiene un soporte táctil 3D. Puede hacer esto comprobando el valor de la propiedad forceTouchCapability de un objeto UITraitCollection . UITraitCollection describe el entorno de interfaz de iOS para su aplicación.
if (traitCollection.forceTouchCapability == .Available) {
registerForPreviewingWithDelegate(self, sourceView: view)
}
Implementando el delegado
Debe implementar los dos métodos de UIViewControllerPreviewingDelegate en su clase. Uno de los métodos es para echar un vistazo y el otro es para el comportamiento pop .
El método que se implementará para el peek es previewingContext .
func previewingContext(previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
guard let indexPath = self.tableView.indexPathForRowAtPoint(location), cell = self.tableView.cellForRowAtIndexPath(indexPath) as? <YourTableViewCell> else {
return nil
}
guard let datailVC = storyboard?.instantiateViewControllerWithIdentifier("<YourViewControllerIdentifier>") as? <YourViewController> else {
return nil
}
datailVC.peekActive = true
previewingContext.sourceRect = cell.frame
// Do the stuff
return datailVC
}
El método a implementar para el pop es previewingContext . :)
func previewingContext(previewingContext: UIViewControllerPreviewing, commitViewController viewControllerToCommit: UIViewController) {
let balanceViewController = viewControllerToCommit as! <YourViewController>
// Do the stuff
navigationController?.pushViewController(balanceViewController, animated: true)
}
Como puedes ver son métodos sobrecargados. Puedes usar 3D touch de cualquier manera implementando estos métodos.
C objetivo
//Checking for 3-D Touch availability
if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)] &&
(self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable))
{
[self registerForPreviewingWithDelegate:self sourceView:self.view];
}
//Peek
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
viewControllerForLocation:(CGPoint)location {
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:location];
Country *country = [self countryForIndexPath:indexPath];
if (country) {
CountryCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
if (cell) {
previewingContext.sourceRect = cell.frame;
UINavigationController *navController = [self.storyboard instantiateViewControllerWithIdentifier:@"UYLCountryNavController"];
[self configureNavigationController:navController withCountry:country];
return navController;
}
}
return nil;
}
//Pop
- (void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit {
[self showDetailViewController:viewControllerToCommit sender:self];
}
3 D Touch Objective-C Ejemplo
C objetivo
//Checking for 3-D Touch availability
if ([self.traitCollection respondsToSelector:@selector(forceTouchCapability)] &&
(self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable))
{
[self registerForPreviewingWithDelegate:self sourceView:self.view];
}
//Peek
- (UIViewController *)previewingContext:(id<UIViewControllerPreviewing>)previewingContext
viewControllerForLocation:(CGPoint)location {
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:location];
Country *country = [self countryForIndexPath:indexPath];
if (country) {
CountryCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
if (cell) {
previewingContext.sourceRect = cell.frame;
UINavigationController *navController = [self.storyboard instantiateViewControllerWithIdentifier:@"UYLCountryNavController"];
[self configureNavigationController:navController withCountry:country];
return navController;
}
}
return nil;
}
//Pop
- (void)previewingContext:(id<UIViewControllerPreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit {
[self showDetailViewController:viewControllerToCommit sender:self];
}