3D Touch- Multi Touch Gesture

3D touch adds an additional powerful new dimension touch interaction functionality in iPhone. On supported device (iPhone6/6s/6 Plus/7/7s/7 Plus), user can access functionality by just applying pressure on the app icon on touchscreen and then application will respond by displaying a menu, actions view, widget or playing animation. Multi–Touch gestures like Pinch, Pan, Rotation, Swipe and Tap, 3D Touch enabled actions which help users to complete essential tasks more quickly and simply or engage in enhanced gameplay.

Home Screen Quick & Fast Action

User have to hold and apply pressure on App icon on home screen. After pressing the app icon on supported device (iPhone6/6s/6 Plus/7/7s/7 Plus), user will get the set of action view like menu action or widget. When user select action menu, app will launch and open the view related to that action. These quick action menu will accelerate user’s interaction with your application. Latest iOS SDK offers APIs which help you to create static & dynamic action to new iPhone user’s.

• Static Quick Action- Add static action in Info.plist file under UIApplicationShortcutItemsarray.

• Dynamic Quick Action- Add dynamic quick action in with the UIApplicationShortcutItem class and associated APIs

Here is a simple example to add Quick Action

▪ Info.plist (source code)

<key>UIApplicationShortcutItems</key>
<array>
<dict>
<key>UIApplicationShortcutItemIconFile</key>
<string>notify.png</string>
<key>UIApplicationShortcutItemSubtitle</key>
<string>Get Notify</string>
<key>UIApplicationShortcutItemTitle</key>
<string>Notification</string>
<key>UIApplicationShortcutItemType</key>
<string>Notification</string>
<key>UIApplicationShortcutItemUserInfo</key>
<dict>
<key>firstShortcutKey1</key>
<string>firstShortcutKeyValue1</string>
</dict>
</dict>
<dict>
<key>UIApplicationShortcutItemIconFile</key>
<string>Pop.png</string>
<key>UIApplicationShortcutItemSubtitle</key>
<string>Checkout the Pop Up</string>
<key>UIApplicationShortcutItemTitle</key>
<string>Pop Up View</string>
<key>UIApplicationShortcutItemType</key>
<string>Pop Up</string>
<key>UIApplicationShortcutItemUserInfo</key>
<dict>
<key>firstShortcutKey2</key>
<string>firstShortcutKeyValue2</string>
</dict>
</dict>
<dict>
<key>UIApplicationShortcutItemIconFile</key>
<string>weight.png</string>
<key>UIApplicationShortcutItemSubtitle</key>
<string>Find your Weight</string>
<key>UIApplicationShortcutItemTitle</key>
<string>Weight</string>
<key>UIApplicationShortcutItemType</key>
<string>Check Weight</string>
<key>UIApplicationShortcutItemUserInfo</key>
<dict>
<key>firstShortcutKey3</key>
<string>firstShortcutKeyValue3</string>
</dict>
</dict>
</array>

▪ AppDelegate.swift (3.0)

func application(_ application: UIApplication,
performActionFor shortcutItem: UIApplicationShortcutItem,
completionHandler: @escaping (Bool) -> Void)
{
print(shortcutItem.type)
if shortcutItem.type == “Pop Up”
{
// Your Code Action
}
if shortcutItem.type == “Check Weight”
{
// Your Code Action
}
if shortcutItem.type == “Notification”
{
}
}

Peek & Pop

Peel & Pop allows user to show preview of all content with action on it, without opening it in another view. To get the preview of item, app which support this functionality apply pressure on item to peek. In some peel views, you can swipe up to get related action buttons. For example. while peeking a mail item in Mail, you can swipe up to reveal buttons for Reply, Forward, Mark, Notify Me and Move Message.

Peek should give enough information to user that they need and always allow transition to pop if they decide to switch and focus on main task.

▪ Example of Adding Action to Peek & Pop

First you have to check the force touch availability and then register your view to show Peek & Pop

if( traitCollection.forceTouchCapability == .available)
{
registerForPreviewing(with: self as UIViewControllerPreviewingDelegate, sourceView: view)
}

▪ How to Add Preview Action

Here we have added 3 preview action while Peek & Pop on the item, Like, Comment & Delete. On click of each preview action you can provide you method which you want to perform.

override var previewActionItems: [UIPreviewActionItem]
{
let likeAction = UIPreviewAction(title: “Like”, style: .default) { (action, viewController) -> Void in
print(“You liked the photo”)
// Your Code Action
}
let commentAction = UIPreviewAction(title: “Comment”, style: .default) { (action, viewController) -> Void in
print(“Post your comment”)
// Your Code Action
}
let deleteAction = UIPreviewAction(title: “Delete”, style: .destructive) { (action, viewController) -> Void in
print(“You deleted the photo”)
// Your Code Action
}
return [likeAction, commentAction, deleteAction]
}

3D Touch is a great way of adding enjoyable features to your app. Get the code from GitHub https://github.com/nehasharma1101/3DTouch.

What do you think about this tutorial? Love to hear your feedback.

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