iOS 9 - New API - 3D Touch - UIKit Peek & Pop Example

iOS 9~ Experiments - New API Components - Previewing with 3DTouch.

Example

Requirements

• = XCode 8.0

• = Swift 3.

• = iOS 9.0.

• = 3D Touch Devices.

Tested on iOS 9.0, iOS 10 Simulators iPhone 6S, 6S Plus , 7 only with forceTouchCapability Unavailable.

Important

this is the Xcode 8 / Swift 3 updated project.

Adopting 3D Touch on iPhone

Read : UIKit Peek and Pop Protocol Reference : UIViewControllerPreviewing

Usage

To run the example project, download or clone the repo.

Example Code!

// Check Force touch Capability
if traitCollection.forceTouchCapability == UIForceTouchCapability.Available {
    // register UIViewControllerPreviewingDelegate to enable Peek & Pop
    registerForPreviewingWithDelegate(self, sourceView: view)
    }else {
    // 3D Touch Unavailable : present alertController or
    // Provide alternatives such as touch and hold..
}

• We need to conform to UIViewControllerPreviewingDelegate

func previewingContext(previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
    guard let indexPath = tableView.indexPathForRowAtPoint(location), cell = tableView.cellForRowAtIndexPath(indexPath) else { return nil }

    let vc = DetailViewController(data: sampleData[indexPath.row])

    vc.preferredContentSize = CGSize(width: 0.0, height: 320.0)
    previewingContext.sourceRect = cell.frame

    return detailViewController
}

• Reuse an existing preview and show it

func previewingContext(previewingContext: UIViewControllerPreviewing, commitViewController viewControllerToCommit: UIViewController) {
    showViewController(viewControllerToCommit, sender: self)
}

• Build and Run!
• By pressing lightly (Peek) and pressing a little more firmly to actually open content (Pop)
• CAUTION! : Untested on physical hardware!
• Devices : with iPhone 6s and others 3D Touch devices!