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Description:

alh pdf view

With this widget, you can display a PDF with bytes or a path.
Index #

Introduction
Example
Parameters
AlhPdfViewController

Introduction #
The package alh_pdf_view includes:

Displays PDF with bytes or path

See more about the functionalities in the parameter section.
Android #

implemented in Kotlin with the dependency AndroidPdfViewer of barteksc

iOS #

implemented in Swift with the dependency PDFKit

Example #

import 'package:alh_pdf_view/alh_pdf_view.dart';
import 'package:flutter/material.dart';

class AlhPdfViewExample extends StatelessWidget {
const AlhPdfViewExample({Key? key}) : super(key: key);

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('PDF Example')),
body: const AlhPdfView(
filePath: 'ADD_PATH_TO_FILE',
),
);
}
}
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Parameters #
This is a list of all parameters that can be used for this widget. Consider that some paremters only work for one platform.

Parameter
Description
Default Value

filePath
Optional path to load PDF file.
-

bytes
Optional bytes to load PDF file.
-

fitPolicy
Defines how the PDF should fit inside the widget.
FitPolicy.both

fitEachPage
Each page of the PDF will fit inside the given space. (only Android)
true

enableSwipe
The current page will be changed when swiping.
true

swipeHorizontal
If true, all pages are displayed in horizontal direction.
false

nightMode
Inverting colors of pages to have the look of a dark mode. (only Android)
false

autoSpacing
If true, spacing will be added to fit each page on its own on the screen. (only Android)
true

pageFling
Making a fling change.
true

pageSnap
Snap pages to screen boundaries when changing the current page. (only Android)
true

defaultPage
Describes which page should be shown at first.
0

defaultZoomFactor
Defines how much the displayed PDF page should zoomed when rendered.
1.0

backgroundColor
Setting backgroundColor of remaining space around the pdf view.
Colors.transparent

password
Unlocks PDF page with this password.
""

enableDoubleTap
When double tapping, the zoom of the page changes. (only Android)
1.0

minZoom
Min zoom value that the user can reach while zooming.
0.5

maxZoom
Max zoom value that the user can reach while zooming.
4.0

enableDefaultScrollHandle
Adds a button to scroll faster through the document. (only Android)
false

showScrollbar
If true, a Scrollbar is visible for the Pdf View (only iOS).
true

spacing
Spacing between pdf pages.
0

This is a list of functional parameters.

Parameter
Description
Default Value

gestureRecognizers
Which gestures should be consumed by the pdf view.
-

onViewCreated
If not null invoked once the native view is created.
-

onRender
Callback once the PDF page was loaded.
-

onPageChanged
When changing the page, this method will be called with the new page.
-

onZoomChanged
Called when changing the zoom.
-

onError
When there are errors happening, this methods returns a message.
-

onPageError
Called when there are specific errors on a page. (only Android)
-

onLinkHandle
Called when tapping a link in PDF. (only iOS)
-

AlhPdfViewController #
If you want to start specific actions for the displayed PDF file, you can use AlhPdfViewController.
This controller contains some functionalities to update your view. Here is a list of them.

Parameter
Description

getPageSize
Returns the size of the given [page] index. (only iOS)

getPageCount
Returns the number of pages for the PDF.

getCurrentPage
Returns the current displayed page.

goToNextPage
Navigates to the next page of the PDF.

goToPreviousPage
Navigates to the previous page of the PDF.

setPage
Jumping to the page optionally animated.

resetZoom
Setting the scale factor to the default zoom factor.

setZoom
Zooming to the given zoom.

getZoom
Returns the current zoom value.