Appcoda swift pdf

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The idea of creating a PDF document in an iOS app looks quite often .. let logoImageURL = " Have you ever been asked to create PDF documents with content straight from your app? Intermediate iOS 12 Programming with Swift. This book is beautifully designed with tons of screenshots and illustrations to help you learn Swift and iOS 12 programming. The book is available in PDF.

It did take a few minutes for the Simulator to get started and render the iPhone with the new app, but it did — be patient. The author gets into writing Swift code with Playgrounds in chapter two, but not in detail until covering how to install Xcode for people new to development. Adopt local notifications to increase app engagement. As the author points out, this demonstrates the OO concept of encapsulation. How can I get the book updates?

There are two textfields only for filling the respective values in, and a save button to add them to the invoice and return to the previous view controller:.

Ng Simon. Beginning iOS 11 Programming with Swift

All the invoice items are appended to an array of dictionaries , where each dictionary has two values: The description and the price of each item. That array is used as the datasource for the tableview that lists all items in the CreatorViewController. When an invoice gets saved, then both the manually added data and the automatically calculated data is set to a dictionary and being returned to the InvoiceListViewController.

Upon saving an invoice the next invoice number is calculated and stored for future use in the user defaults dictionary NSUserDefaults. The dictionary with the data of a new invoice is appended to an array in the InvoiceListViewController , and that array is stored to the user defaults as well every time a new one is created by the user. The invoice data is loaded from the user defaults when that view controller is about to appear. There are definitely better ways to store your data.

How to Generate PDF using HTML Templates and UIPrintPageRenderer in iOS

I have almost nothing to comment regarding the existing code, and all you have to do is to go through each view controller or follow the flow of the app so as you see the details of the implementation. One for getting easy access to the application delegate, one for getting the path to the documents directory, and one for converting an amount represented as a string into a currency string the amount along with the proper currency symbol.

Use it to set your own currency code. By tapping on an existing invoice in the tableview in the InvoiceListViewController , a dictionary containing the data of the matching invoice is passed to the PreviewViewController view controller. These functionalities do not exist in the starter project and we will start implementing them, taking as granted that all the data we need regarding an invoice already exists in the PreviewViewController and we can use it directly.

Swift pdf appcoda

The primary logic here is to put placeholders in the HTML files in certain points, and then replace those placeholders with real data. But in order to do that, we must find or create custom HTML forms that will give us eventually the desired result.

The first one contains the code that will produce the entire invoice, except for the lines of the items. We have two other templates for the items specifically: A placeholder inside any HTML template file will be a special keyword surrounded by symbols. For example, the next extract show the placeholders for the invoice number, issue date and due date:. You can find all placeholders inside the three HTML files, and the position where each placeholder fits to. Also, the ITEMS placeholder will be replaced once the respective code for all items has been created by using the two extra HTML template files details about that in the proper time.

The main and most important task in this part is the replacement of the placeholder values in the invoice HTML template files with real values. Those real values are actually the data matching to the selected invoice in the InvoiceListViewController that pass to the PreviewViewController.

Proceed with the guide and get finished with the new file creation. With the InvoiceComposer. In a real app of course, these would consist of values that users should be able to set or change.

Needless to say that you are totally free to set your own values in the above properties for example, set your own info in the senderInfo property. We can now proceed and create a new method that will do the important work of replacing the placeholder values in the HTML template files. The parameters are actually all the values that can be manually set when creating an invoice in the demo app, and they are all we need in order to generate the invoice along with the hardcoded values as properties of this class.

In the following snippet, two significant things are taking place: At first the template content from the invoice. There are comments that will help you go through it:. Replacing a placeholder value is as simple as it looks in the code above. Further than that, notice that all the work is taking place inside a do-catch statement, as the initialisation of the HTMLContent string with the contents of a file can throw an exception. At the end that string is returned from the method.

The template code has been modified appropriately in order to produce an invoice with real content. Therefore, our goal in this part is to load the composed HTML string to the web view existing in the PreviewViewController , and watch the results of our previous efforts.

We mostly do it here for the sake of the completeness of the demo app. Switch now to the PreviewViewController. Once we get an actual HTML string back from that method not a nil value , we load it to the web view. Then select it from the list by tapping on it, and watch the invoice content appearing on the web view, like the one shown below:.

With the half of the job already done, we can start working in the printing process which will become our way to export an invoice to PDF. Those drawing methods can be overridden by subclassing the UIPrintPageRenderer class only, but it worths the extra effort as we gain great flexibility and control over the content that will be printed to the actual page, the header or the footer.

So, back to Xcode again, create a new class following same steps as before. Two things to take care about:.

Once you have it ready at that point you should be able to see a new file in the Project Navigator called CustomPrintPageRenderer. The above values describe the precise width and height of the normal, common A4 page that is used all over the world for printing.

The above consists of a quite straightforward, and at the same time a standard technique for setting the frame of the paper and the area where content will be printed. In that snippet, you can see that we made the paper frame and the printable area equal. In that case, you could just replace the last line with the next one:.

The above adds an offset of 10 points to both horizontal and vertical axis. In other words, you should never forget to set the paper and printable area of your printing object. Create auto layout constraints programmatically. Stack Views. Understand stack views, learn how to use it to lay out user interfaces and adapt stack views using size classes. You'll also work with Dynamic Type that lets users adjust the font size of the app. Learn to use and customize table views for presenting data.

Structuring UI navigation with tab bar and navigation controllers. Implement large title navigation bar. Understand how to use the MapKit framework to display a map and add annotations.

Learn to implement 3D Touch to give users quick access to certain functions. Adopt local notifications to increase app engagement. Learn how to integrate a search bar in iOS apps and implement the search feature. Animations and Visual Effects. Learn to animate view objects and apply blur effects using the built-in APIs. Learn how to manage data using the built-in database via Core Data.

Load photos from the photo album and create a camera feature for users to capture photos. Learn how to localize an app into multiple languages to reach more users globally. Build and Design with Xcode Learn how to design app UIs with Interface Builder, work with multiple storyboards, delegates, segues, images including vector images , debugging, arrange beta test with TestFlight and many more.

Code in Swift 4. Swift is the new programming language for iOS. It is easier to learn and more approachable to beginners. Most importantly, it is an increasingly in demand skill. You'll learn to develop apps in Swift 4. I was also able to get a software developer job where now I am running the Mobile department.

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Even if you do not need a subscription app, you can learn how to implement calendar and apply MVVM by reading the source code. Design beautiful app screenshots.

One of the requirements when publishing an app to App Store is to provide the app screenshots.

Beginning iOS 11 Programming with Swift | Digerati & Technology Reports

You can simply capture the screenshots, but wouldn't it be great if you can make it look awesome? It'll definitely attract more app downloads?

I tried multiple learning sources including the Stanford training. Although I already did learn some topics like auto layout, delegates, segues, etc through other sources, your book was the first one that really made me understand them! Ready to Get Started? This special sale ends on 30 Apr Everything included in the Starter package, plus the following, to help you become a professional iOS developer.

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Swift pdf appcoda

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