Here is the code of “ShareViewController” When negative number shows, its appearance becomes red. You can also make it more dynamic with some other controls.ĬontentText :- A string which represents what the user has typed into the composer.ĬharactersRemaining :- Is a number which appears on the compose sheet. In our case we are sharing a photo with contentText. When the upload request is done, it calls the completion handler that was passed into the previous mentioned function call.ĬonfigurationItems() :- Here, we can add more things for the user to select when they are sharing. Once the upload is scheduled, you must call completeRequestReturningItems(, completionHandler:) so that the host app can un-block its UI. Here we can do something with the user input. It is called first, and will disable the post button when it evaluates to false.ĭidSelectPost() :- As the name suggests, it is called when the user presses the post button. Here, we can check the input data is valid or not. IsContentValid() :- It is called every time when the content in the compose view changes. SLComposeServiceViewController has some methods and properties associated with the lifecycle of a share-sheet composition view. Let’s look at the “ShareViewController” from our Shared Extension Folder which is subclass of SLComposeServiceViewController. We are getting photo and content from our photos app that are already set to our main app. This is a fixed array of data sent to our extension from a parent app. An extensionContext where we get a list of NSExtensionItems. Here, “sharedIdentifier” is the UserDefaults suiteName that we have used for the app group name. We have also created an IBAction of Upload button, so that content and photo which is shared by user can be used anywhere in our app. So we can read content data from User Defaults which is shared by user from Share ViewController. Implementing Share Extensions in Swiftįirst open your viewController, we won’t go into much detail, because it’s a destination viewController. Now click on your extension and do the same.Ĥ. Give it a name like “group.BUNDLE IDENTIFIER”. Apple recommends a shared NSUserDefaults as a meeting ground where the two app can exchange their data.Ĭlick on your project in the Navigator Pane of Xcode, click on capabilities and your app under the target list turns on App Groups. We want to communicate two app for sharing some content, but Apple doesn’t want a complete free flow of data between the two. Note: Schemes can be chosen from the toolbar or Product menu. Choose Activate to use this scheme for building and debugging. Give some proper name of that extension and it will show you popup view for activating your extension scheme. When user comes with some sharable content from parent app, we can upload or we can use anywhere in our app.įor Eg, let’s create the Share Extension. Like it is shown belowĭesign the screen with UILabel, UIImageView, UITextView and with UIButton. This is mainly a programming article, so you are required to have Xcode 8 on Mac.įirst Create a cocoa touch Single View Application in Xcode 8 with some basic UI. So the user can easily switch from one app to another, for example, we are sharing a photo from the album with some content that switches our app where we want to upload data to the server. So today, we are going to build a Shared Extension app in iOS10 with Swift 3.0, an ability to show an icon on the common share-sheet that associates with our main app, which handles the sharing of the content that the user has requested. We, 9series, an iOS application development company has started doing all the development using Advanced Programming Language Swift. The mutability of value types lets you specifically choose what variables can be modified or not.Hello everyone, as we all know that Share Extension is appeared from iOS 8, then the capability to share content with other entities, such as social sharing websites or upload services can be done in an easy and convenient way. They’re also useful when you want to create a shared, mutable state.Īs a general rule, start by creating your instance as an enum, then move to a struct if you need more customization, and finally move to class when needed. = checks if two objects share the same memory address. Use a reference type when comparing instance identity with = makes sense. You can find more info about closures in Swift's docs. Let’s experiment with structs and prove that they’re value types:Īdd the following code to your playground: // 1 struct Car There are a few different value types: struct, enum, and tuple. Value Types vs Reference Types Value TypesĪ value type instance is an independent instance and holds its data in its own memory allocation. You'll use it to experiment with the code in this tutorial.
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