![]() PdfDocument = PrintedPdfDocument(activity, newAttributes) Create a new PdfDocument with the requested page attributes The following code example shows a basic implementation of the onLayout() method for a PrintDocumentAdapter: Print job in a PrintDocumentInfo class, including the number of pages andĬontent type. The adapter makes these calculations and provides information about the expected output of the The implementation of the onLayout() method in Number of pages for print job, given information about the printed page size. ![]() Within an implementation of the PrintDocumentAdapter class, yourĪpplication must be able to specify the type of document it is creating and calculate the total Layout or print document writing work in separate AsyncTask objects. Time, implement them to execute within a separate thread. You expect the execution of these methods in your implementation to take a significant amount of Note: These adapter methods are called on the main thread of your application. The following sections describe how to implement the layout and write methods, which areĬritical to the functioning of a print adapter. Implementing this method in your adapter is not required. If your application has any one-time tear-down tasks to perform,Įxecute them here. This method may be called one or more times after each At the minimum, this method must return how many pages are expected Or page orientation, giving your application an opportunity to compute the layout of the User changes a print setting which impacts the output, such as a different page size, This method in your adapter is not required. Perform, such as getting a snapshot of the data to be printed, execute them here. If your application has any one-time preparation tasks to In your print adapter in order to interact properly with the print framework:īeginning of the print process. Printing lifecycle, which has four main callback methods. The PrintDocumentAdapter abstract class is designed to handle the Process, users can choose to cancel the print action, so your print adapter must also listen for Takes the final print document and passes it to a print provider for output. Once a user taps the print button, the framework Print document, in preparation for final output. Printers with different output capabilities, different page sizes, or different page orientations.Īs these selections are made, the print framework asks your adapter to lay out and generate a These selections can influence the final output as the user chooses This process requires users to select printers and print options before creatingĪ document for printing. When printing a photo that is in that orientation.Ī print adapter interacts with the Android print framework and handles the steps of the More appropriate to the content being printed, such as setting the orientation to landscape You may also use this parameter to set options that are Provide hints to the printing framework and pre-set options based on the previous printing cycle, Implementation of the print adapter class is discussed in the next section. The example code above demonstrates how to name a print job and set an instance of the PrintDocumentAdapter class which handles the steps of the printing lifecycle. PrintManager.print(jobName, new MyPrintDocumentAdapter(getActivity()), String jobName = getActivity().getString(R.string.app_name) + " Document" getSystemService(Context.PRINT_SERVICE) PrintManager printManager = (PrintManager) getActivity() PrintManager.print(jobName, MyPrintDocumentAdapter(context), null) to handle the generation of a print document Start a print job, passing in a PrintDocumentAdapter implementation Set job name, which will be displayed in the print queue Val printManager = context.getSystemService(Context.PRINT_SERVICE) as PrintManager The following code example shows how to get the print manager This class allows you to initialize a print jobĪnd begin the printing lifecycle. Print request from your user is to connect to the Android print framework and obtain an instance When your application manages the printing process directly, the first step after receiving a This lesson shows you how you connect with the print manager, create a print adapter andīuild content for printing. You must build components thatĬommunicate with the print framework, adjust to printer settings, draw page elements and Programming investment than the previously discussed approaches. Precise control of everything that goes into a page, including fonts, text flow, page breaks,Ĭreating print output that is completely customized for your application requires more The print output for these types of applications requires Graphic output, creating beautiful printed pages is a key feature. For some applications, such as drawing apps, page layout apps and other apps that focus on
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