I am working on a flutter app which generates PDF files in flutter using pdf library.I need to create a pdf file which has a table of contents. They should be linked with the actual content and should navigate to their respective pages when clicked on it. I couldn't find any documentation online for doing this using the pdf library. The PDF is going to be written to a file so PDF Viewers in flutter are not useful for me either. Can someone please help me out
can we use html code with dart like <a tag or something for internal navigation in PDF?
You can use Anchor and Link widgets from pdf/widgets.dart for internal navigation inside the generated PDF.
Just create an Anchor on the page to which you want to navigate to. You need to provide a name parameter for it and it should be unique.
Anchor(name:'my_anchor', child: any_child_widget);
You can now refer to that anchor from another page using Link widget.
Link(destination:'my_anchor',child: any_child_widget);
You can enclose any child within the Anchor and Link widget.
Related
In my Flutter app, I want to be able to create some kind of certificate of completion. The layout will be always the same, but picture and text in it should change. This certificate should be created in a jpg format, so I can share it with other apps.
Does anyone have an idea how this could be accomplished?
The only way I can imagine is that I create a Screen template where I put in text and picture, then let the phone take a screenshot and save that screenshot automatically. But this might lead to unwanted content in the picture and different image sizes. I have searched for Widgets/ ways to create an image in Flutter but could not find anything.
You will need to create a widget with constructors (Image and text).
Then use a flutter package called screenshot to capture the parent widget as image and save it to the users phone.
plugin link: https://pub.dev/packages/screenshot
I am using the useTemplate method of FPDF to create a PDF with lesser pages than the original file. Each page has 4 Form field buttons but these buttons are not copied over to the new PDF file.
Is this achievable with FPDF?
Kind regards,
Baran
I upload the pdf file from storage.
I'm trying to place the signature image at the bottom of every single page of pdf file and save as new pdf file using flutter.
I don't know how to do that? I tried my sample but I didn't find the solution I wanted. Please suggest me any flutter plugins or packages.
The idea is very simple: it consists of reading the pdf file as images
(one image per page), and then create a pdf, having as background one
of the retrieved images.
this article explains what u need
https://medium.com/flutter-community/edit-a-pdf-in-flutter-6a80f8aa7dfd
For an application I need a document that is able to record and display among each other any type (text, audio, video, HTML, maybe PDF) that the user enters or inserts.
At first I wanted to use a listview with different types of widgets (textfields, video via plugin, webview via plugin etc.), but it seemed much too complicated to me. For example, how could I have selected parts of a text field, the following image and parts of the next text field at the same time?
Actually, the document format that I need already exists: HTML. If you set the attribute "contentEditable" accordingly, it is not a big problem to let the user change the document in any way with the help of JS. And this is exactly my problem: If I use the Webview (Developer Preview) of the Flutter team (webview_flutter), the attribute "contentEditable" is apparently ignored. I can't mark text and no keyboard appears.
Am I doing something wrong or does the plugin not (yet) support this attribute? Otherwise, is there an alternative? I have to say that I am an absolute beginner in Flutter.
All I need to know is how to put a PDF page into a UIWebView, and then retrieve the URL value (into an NSString) of a link when clicked. Can somebody please offer their knowledge on this? Thanks in advance.
Most iPhone PDF viewers are using CGPDF to render the PDF content.
To implement features like hyperlinks (AFIK hyperlinks in PDF are done via a "link annotation" tag, but there may be some other way), the PDF viewer uses the CGPDF API to scan/parse the PDF content stream for a given page, pull out any data it is interested in, then implement support for that feature.
So for hyperlinks, a viewer may use CGPDF to render the page in a view. It would also use CGPDF to scan the page looking for link annotations, and pull out any attributes it needed (contents, destination, coordinates, etc.) It would implement a touch-handler for the view and any code to execute when a user tapped the hyperlink.
This is not possible if you render PDFs in UIWebView.