App or extension to mark up downloaded document

However, producing a robust document provider with a solid user experience is a nontrivial task. If you want only to share documents from your app, you can create a UIDocumentPickerViewController object to export or move your documents.

Alternatively, you can share your documents using iCloud Drive. To opt-in to iCloud Drive support, open the Xcode capabilities pane and turn on iCloud documents. You will need to add an entry for your iCloud containers, and then define how you wish to share each container. A sample entry is shown below:. Your subclass is instantiated when the user selects your document provider from a UIDocumentMenuViewController object or when the host app opens your document provider directly using a UIDocumentPickerViewController object.

In either case, the host app presents a document picker view controller. Your extension must provide the rest of the user interface. Figure shows the relative position of these UI elements. The extension must present an appropriate user interface for the given mode. The open and import modes often require a different set of controls than the move or export modes.

Your extension should therefore check the mode and present the correct user interface. The UIDocumentPickerExtensionViewController object acts as the root view controller for your user interface; therefore, it is often convenient to make it a container controller.

You can then create a separate child view controllers for each mode, and your extension simply presents the appropriate child view controller in your prepareForPresentationInMode: method. When performing an export or move operation, your Document Picker View Controller extension must perform any required file transfers and trigger any required server updates. Your Document Picker View Controller extension must copy the file to the selected location. The File Provider extension can sync the file to your server.

This approach allows you to isolate all the code that interacts with your server in your File Provider extension. For detailed information, see Creating an App Extension. When creating the Document Picker View Controller extension, you have the option of creating the corresponding File Provider extension at the same time. For more information, see Creating the File Provider Extension. For the system to automatically recognize and load your extension, its property list must contain the following entries:.

These entries are automatically set by the Document Picker Extension template. In particular, the UIDocumentPickerModes array contains entries for all the modes that your document picker supports.

Your extension appears as an option only when the type of files being transferred match at least one of the UTIs listed in this array. To match all document types, include both public. You can edit this key to change how your extension instantiates its view controller and how it creates its view hierarchy. This approach allows you to load your user interface from a. Modify this subclass to manage your user interface and respond to user interactions, just as you would for most view controllers.

If necessary, override this method to set up any required resources. In particular, if your app uses different view hierarchies for the different modes, set up the correct view hierarchy in your implementation. Call this method to dismiss the document picker view controller and grant access to the provided URL.

Each mode has its own requirements for the URL. For the complete details, see Dismissing the User Interface. It is valid only after the system calls your prepareForPresentationInMode: method.

Otherwise it contains nil. This read-only property contains the array of valid UTIs when in import or open mode. If you do not provide a File Provider extension, it returns nil.

When importing or opening, your extension should create a list of all the available files and present this list to the user. Users should only be able to select files that match one of the UTIs from your validTypes property.

If other files are included in the list, they must be clearly marked as unavailable. You may even want to create and display thumbnail images of the file. Your document picker can present a flat list of all the available files or it can display a complex hierarchy with directories and subdirectories.

Regardless, after the user chooses a file, dismiss the user interface and pass the URL back to the host app. For export and move operations, let the user select the destination for their file.

For simple extensions, you might just provide a confirmation button. More complex extensions might let the user navigate through a hierarchy of directories and even create their own subdirectories. After the user has chosen a destination, dismiss the user interface. You may also decide to handle logins, downloads, and similar tasks directly in the Document Picker View Controller extension. There are only two places where you can directly interact with the user: in the containing app and in the Document Picker View Controller extension.

This means that all account management, error notifications and progress updates must be handled by one of these two components.

If you want to handle these tasks in the containing app, you can use notifications and badges to notify the user. The extensions can contact your server and request an appropriate push notification.

This notification then launches the containing app in the background, letting it run in response. The containing app can also use local notifications and badges to alert the user to important events.

However, the user must either select one of the notifications or open the containing app to bring it to the foreground. Therefore, this approach often requires active participation by the user, and users can miss, ignore, or even disable these notifications and badges.

Often, you can provide a better user experience by handling these tasks in the Document Picker View Controller extension directly. For more informations, see Network-Related Tasks. The URL must meet all of the following conditions:. Import Document Picker mode. Microsoft lets you change your default apps on Windows This way, you can open, manage, or edit media files, using the software program you prefer.

Changing the default apps is not a new feature on the Windows operating system. Windows 8 also has the same functionality. On the other hand, Windows 10 offers a new user interface for managing default apps. The process is quite different from what Windows XP, 7, or 8 offers.

You need to know the type of the file that you wish to change the association of. You can do that by right-clicking the file, then selecting Properties from the context menu.

Once the Properties window is up, look at the Type of File area. Keep reading this article to learn how to change the default apps in Windows 10 by file type. We will also throw in some bonus tips related to file associations in this post.

The easiest way to change the association for a single file type is by using the Open with option, which we mentioned earlier. On the other hand, if you need to change the associations for multiple file types, you should skip to the next method. To begin, follow the steps below:. Note: If your preferred app is not on the list, you can search for it by clicking More Apps.

Doing so will show you an expanded list of installed applications on your PC. If you want to set the default apps for multiple file types, then your best option is to use the Settings app. Here are the steps:. Tap the photo in the message, then tap Markup.

From here, you can add a sketch to the photo, or tap the plus button for other Markup options. Tap Save, then tap Done. Tap the Send button. Photos Go to Photos and select the photo you want. Tap Edit, then tap the Markup button. Tap the Add button to add text, shapes, and more. Tap Done, then tap Done again.

Draw with Markup After you choose a Markup tool — like the pen, highlighter, or pencil — select a color and start drawing. Move a drawing After you draw something, you can move it around.

Erase or undo a drawing To redo a drawing, tap the eraser button and rub your finger across the area you want to erase. Add text, a signature, magnifier, and shapes Tap the Add button to choose from other Markup tools:. Quickly add or create a signature for a document. Published Date: October 25, Yes No. Character limit: