Please note: You need a compatible device i.e. iPhone 6s and above, simulator does not support 3D touch.<\/em><\/p>\n Now let\u2019s learn and implement the 3D feature Peek and Pop<\/strong>\u00a0<\/strong>and will discuss Quick Action <\/strong>in next blog.<\/p>\n in iOS development<\/a> peek means previewing an item and performing an action without playing with your current context.<\/p>\n To check whether an item supports peek, press it lightly. If it displays a\u00a0small rectangular box around called as hint,\u00a0<\/em>then sometimes it indicates that it supports peek.<\/p>\n \u00a0Peek over an email<\/p>\n <\/p>\n We need to use delegate class for 3D touch i.e UIViewControllerPreviewingDelegate<\/p>\n The two required methods that we need to implement are:<\/p>\n This will help to show the content on the view that you want to show in preview, but not the complete content.<\/p>\n We only need to perform two more steps:<\/p>\n To pop on the same view we just need to implement the delegate method on the same viewcontroller and call:<\/p>\n When a user is in peek view, he just needs to swipe up, and an action sheet will appear with some action that the user selected and performed.<\/p>\n To do this, you just need to implement the\u00a0previewActionItems<\/em> method in DetailViewController.<\/p>\n This method returns an array of objects that implement the\u00a0UIPreviewActionItem<\/em>\u00a0protocol.<\/p>\n This UIPreviewAction <\/em>has 3 arguments that we need to provide :<\/p>\n <\/p>\n This 3D touch is a rapidly growing technology and every day some new development happens to make this better, and thus Apple came up with a completely new environment where we can use some 3D features, that help us in the following:<\/p>\n As we know that Apple has got a very different way to interact with the device in 6s and 6s plus by introducing 3D touch. In 3D touch, the phone judges how much pressure we are applying over the device and perform an appropriate action accordingly. iPhone responds to the subtle tap when one interacts […]<\/p>\n","protected":false},"author":514,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":1},"categories":[1400,1772,1],"tags":[3170,4848,3171,3172],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/33344"}],"collection":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/users\/514"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/comments?post=33344"}],"version-history":[{"count":0,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/33344\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/media?parent=33344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/categories?post=33344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/tags?post=33344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Peek and Pop:<\/strong><\/h5>\n
A peek:<\/h5>\n
\n
![\"Untitled\"](\"\/blog\/wp-ttn-blog\/uploads\/2016\/03\/Untitled.png\")
<\/p>\nObject can be asked for the value of the\u00a0forceTouchCapability<\/em> property. If this capability is available we can register our view controller for peek and pop by calling\u00a0registerForPreviewingWithDelegate:sourceView:<\/a><\/em>
\n
\noverride func viewDidLoad() {
\nsuper.viewDidLoad()
\nif( traitCollection.forceTouchCapability == .Available){
\nregisterForPreviewingWithDelegate(self, sourceView: self.collectionView!)}
\n}<\/code><\/h5>\nImplementation of 3D touch:<\/strong><\/h5>\n
\n
The other one is for popping<\/h5>\n<\/li>\n<\/ul>\n
Setup peeking:<\/strong><\/h5>\n
\nfunc previewingContext(previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
\n...
\n}<\/code><\/p>\n\n
detailVCObj.preferredContentSize = CGSize(width: 0.0, height: 300)]<\/code><\/p>\n\n
previewingContext.sourceRect = cell.frame<\/code><\/p>\nSetup the popping:<\/strong><\/h5>\n
showViewController:sender: <\/em>method.
\n
\nfunc previewingContext(previewingContext: UIViewControllerPreviewing, commitViewController viewControllerToCommit: UIViewController) {
\nshowViewController(viewControllerToCommit, sender: self)
\n}
\n<\/code>
\nAnd now we are done. Just run the application and press the view on which you added the function. It should popup and if you press harder you\u2019ll pop inside the DetailViewController.<\/h5>\nAdding preview actions:<\/strong><\/h5>\n
\n
For Example :<\/strong>
\n
\noverride func previewActionItems() -> [UIPreviewActionItem] {
\nlet likeAction = UIPreviewAction(title: \"Like\", style: .Default) { (action, viewController) ->
\nVoid in
\nprint(\"Like it? \")
\n}
\nlet deleteAction = UIPreviewAction(title: \"Delete\", style: .Destructive) { (action, viewController) -> Void in
\nprint(\"Deleted this !! \")
\n}
\nreturn [likeAction, deleteAction]
\n}<\/code><\/h5>\n![\"IMG_3256\"](\"\/blog\/wp-ttn-blog\/uploads\/2016\/03\/IMG_3256.jpg\")
<\/h4>\nCONCLUSION<\/strong>:<\/h5>\n
\n