Keep in mind that you can adjust the size of each of those panes by hovering your cursor over the boundaries of each area and dragging. Then you can use the View buttons to hide those 2 panes to give your editor more visible space. In this pane, there are a bunch of different navigators that you can switch between using the Navigator selector bar refer to diagram. The three navigators that you will use a lot are the Project, Search and Issue navigators. You can also right click on the project navigator and create new files or add existing files to your project.
Or you can drag folders or files from your computer directly onto the project navigator and will popup a dialog asking how you want to add the files. If you double click a file instead, it will open a new window which can be useful when you have dual monitors. The root node of the project navigator is your Xcode project file indicated by the blue icon.
If you click that, the project properties will open in the editor area. It will also show yellow Warnings in the issue navigator. This is where all the coding happens. As mentioned in the project navigator section, when you click a file there, it will open the contents in this editor area for you to edit the contents.
2. Demystifying The Xcode Interface
There are these little back and forward arrows in the upper left corner of the editor area. These guys are actually pretty useful.
- How to Generate PDF using HTML Templates and UIPrintPageRenderer in iOS.
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They act like the back and forward buttons on your browser and they let you navigate to previously viewed files. Another way to quickly get to the file you need is to use the Jump Bar see diagram. The jump bar allows you to quickly drill down through your groups and find the file you need. It looks like a breadcrumb at the top of the editor area but when you click a segment of it, it will open up a menu with other groups in that hierarchy level:. That does it for navigation within the editor area however, it still has some tricks up its sleeve.
The editor area has three different views and you can toggle between them with the set of buttons in the upper right hand corner:. It looks like a two pane view. Each pane also has independent jump bars, so you can also use that to change what file each pane is displaying.
The right most button is the Version Editor view where you can compare two files. Here are some fantastic resources I've gathered - from beginner to… www. Here are some of my previous articles; The secret to being a top developer is building things! You can only become a great developer by putting the effort in. This is when cheatsheets jump in! Here are the best front-end… medium.
Never miss a story from Hacker Noon , when you sign up for Medium. Learn more. Once that happens, the drawn content can be sent either to a real printer or stored to a file. That is the print formatter UIPrintFormatter class.
The ultimate list of resources for mastering Swift and iOS development — edition
UIPrintFormatter is an abstract base class for print formatters: Given a print formatter, the printing system can automate the printing of the type of content associated with the print formatter. That means for us that simply by adding the HTML content as a print formatter to the print page renderer, the iOS printing system will take over of the layout and actual printing to the page. I would advice you to take a look at this page for more information, as everything is explained there.
More details about it and for the rest subclasses can be found in the link above. In a more complicated app you can use multiple print formatter objects, and specify of course different starting pages for each formatter.
1. Where Can I Download Xcode?
But for now, the above is just fine for making our point clear. At first we initialise a mutable data object, so the PDF output data can be written to it. Next, we begin the creation of a new PDF page, but the actual drawing is taking place with that line:.
With that line, the print page renderer object that comes as an argument to the method will draw its contents inside the frame of the PDF context. Note that any custom header or footer will be automatically drawn as well, as the drawPageAtIndex The above method prints a single page. However, in case you need to print multiple pages, then you can include the beginning of the PDF page creation and the print page renderer drawing into a loop. Keep that in mind in case you want to extend this demo app or make one of yours and you desire multiple pages to be printed in a single PDF file.
At that point all the tasks related to PDF export have come to their end. Open the PreviewViewController. IBAction method. Add the following line, so the previewed invoice to be exported to a PDF file when tapping on the PDF bar button item:. You can now test the app, but for quick results I would suggest to do so in the Simulator. Once you select an invoice to preview, tap on the PDF bar button item to the top right side of the screen:. Copy just the path without the file name , and open a new Finder window.
Use the Shift-Command-G key combination, and paste the path there. Double click on it to preview it in the… Preview app or choose any other app you might like:. The following screenshot will make our goal clear:. Before we see the details of the header and the footer, we must specify the desired height for the header and the footer.
Open the CustomPrintPageRenderer. There are comments that will make it easier to understand each line:. The above is a common tactic for calculating the size of the frame surrounding some text. By using a temporary label, we set either a simple text with font or an attributed text, and we use the sizeToFit method to let the system calculate the exact size for us.
The drawAtPoint If you want to use a String object instead, then you have to cast it to NSString as follows:. At this point we have already reached to the end of the main concept of this post. The capability to preview the PDF in the web view that already exists in PreviewViewController , and to send it via email.
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Our work will take place in the PreviewViewController. Add the following new method that displays the alert controller to the screen:. We must call the showOptionsAlert method. The alert controller should be presented to the user right after the PDF file has been exported to the documents directory, therefore go to the exportToPDF IBAction method and add the single line shown below:. No matter what techniques currently exist or will exist in the future for creating PDF documents, the method presented in this post will always be a standard, flexible and secure way to render PDF files.
Xcode Tutorial for Beginners
The need of HTML templates that will be used to generate the real content. For me, this is a low price for what we get as a payback. In any case, I hope you like the technique described in this post and you actually use it in your projects. Thanks for reading, and happy printing to PDF documents! For reference, you can refer to the complete Xcode project on Github.
Gabriel has been a software developer for about two decades. He has long experience in developing software solutions for various platforms in many programming languages. Since middle he has been developing almost exclusively for iOS.
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Tutorials consist of the best way to share knowledge with people all over the world. The whole idea is based on using HTML templates and it can be synopsised in the following steps: Use of those HTML templates to produce the real content optionally display it in a web view. In the last step, iOS will do all the hard work for you.