There are also times we need to access content on the web. While working on a project i needed a way to generate a pdf from some in app html to a for emailing and printing purposes. Everything works perfectly on simulator, and it has worked ok on devices in the past. I realized on that before ios 8 the values of screen size returned did not change according to the orientation of the app but from ios8 onwards it does. If you are referencing assets in your bundle such as images or css, you should specify bundle. How to load html code or file in uiwebview using swift.
In this post we will learn on how to generate a pdf from an html file, or convert an html rendered in a uiwebview into a pdf. For realtime updating which it sounds like you want, you should cache the information and show it to them in a way that can be updated while typing, say a uitextview. Sometime, in our design, we have to use table views grids for example bank statement. Nsbundle mainbundle resourcepath to load from your document. In this weeks lesson well explore how to use this view in a.
I have tested if the index file and the css file exists and it is all there. For example, if you can access a pdf in a browser with and. Since ios 8, uiwebview was replaced with a much more powerful and. Forms common code because it will be a different string on each platform for a pcl, you probably want to use dependencyservice to implement a simple string interface to supply the correct base url path for each platform. The uiwebview can be added to your view as you do with any other view, either programmatically or using the interface builder. I know how to display a local file stored in the main bundle, but i just cant figure out how to get these files stored in the sqlite database to display in the uiwebview. Uiwebview objects were locally scoped to the method calls, meaning that when those methods returned the web view was deallocated. Using uiwebview for displaying rich text kiefermat. To help you avoid being vulnerable to security attacks, be sure to use this method to load local html files. Create a new project, and choose view based application from the project template. When i load the html string in a wkwebview the css is loaded since i can pass in a baseurl to the webview like this. Add an iboutlet to view controller and link it to webview as shown in the. Load a uiwebview in ios that can also load local resources like images, css, and javascript yourviewcontroller. To set the text, you call the method loadhtmlstring.
The ultimate guide to wkwebview hacking with swift. If you are familiar with ios designing and auto layout, you already know how difficult it is to design complex tables or grids. This will act as link and will take user to the actual document. Im composing some text and trying to display it in a uiwebview. For this use case the baseurl value is a local file location, which is difficult to express in xamarin.
Owasp ios developer cheat sheet inspect remote content via the. I had already done this in one of my previous projects so i figured id reuse the same code. Wkwebview vs uiwebview wkwebviewuiwebview itkeyowrd. Now the webview object is scoped to the entire class, ensuring that the delegate methods are triggered and that the pdfs are generated properly. Here we add some code to our viewcontroller to load an html string in our uiwebview. A landscape only subview appears as potrait on ios 7 works fine on ios 8.
For presentation purpose instead of simply adding link to pdf documents we will add nice pdf icon. Nsurl baseurl parameters data thecontentforthemainpage. A url used to resolve relative urls within the document. In one of my recent projects i had to use a web view to display an html string with local css and custom font. Owasp mobile top 10 maintain control of all uiwebview content and pages, and prevent the user from accessing arbitrary, untrusted web content. Adding custom media content into uiwebview fresh beginning. Caricamento di javascript in una uiwebview da risorse yocker. This could, for example, be the resource path for your app bundle, which would allow you to use local images and. In many cases, for instance when using web views in table view cells, its important to determine the content size of the rendered html page. Determining the content size of a wkwebview amer hukic. This logic for zooming of uiwebview, no need to add uiwebview on uiscrollview. Maybe wkwebview has a problem with resolving relative paths so my first idea was to use absolute paths inside the html string instead. I have a project that i am working on that requires me to be able to display an html file stored in a sqlite database in a uiwebview.
Uiwebview example using swift in ios uiwebview object is used the load and display the web content into your application, safari browser is the primary example for ios webview. Update if brent nycum made a great little helper class to make printing pdfs from webviews easy. If you want to load resources from a particular place, such as javascript and css files, you can set the baseurl parameter to any url. Uiviewcontroller,uiwebviewdelegate override func viewdidload super. When called it will render the uiwebview to a render context and commit that to the pdf. Uiwebviewhtmlwebview uiwebviewclassmethodloadhtmlstring. It also had to have a height adjusted to the content it was displaying. How to load a html string into a wkwebview or uiwebview. This method is an instance method on our uiwebview.
After loading the page, this can be calculated in the uiwebviewdelegate delegate method. Add the local html file into your project name it as home. Thus, i have replaced my good old uiwebview with a shiny new wkwebview. It has a background of aliceblue, my favorite color. But what i thought to be an easy exercise simply swapping the classes and replacing the delegate methods turned out to be a real mess. You should set baseurl argument correctly to your servers url.
Uiwebview example to load url in ios using swift in xcode. What good is a swift tutorial without any swift code. The web view had to be embedded inside a scroll view along with a couple of other views. Display html file in uiwebview from sqlite database. Load a uiwebview in ios that can also load local resources. Load local html into uiwebview using swift exceptionshub. If possible call mobile safari instead of rending inside of uiwebview which has access to your application.
620 1125 130 383 945 1146 500 1478 926 243 945 1483 1102 120 813 637 1534 438 969 1088 1022 301 1002 1530 609 977 756 60 199 1321 1297 678 352