flutter_pdf_viewer 0.0.6

A native Pdf viewer for flutter based on Pdfium Android

example/lib/main.dart

import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:flutter_pdf_viewer/main.dart';

void main() {
  runApp(new MyApp());
  PdfViewer.enableAnalytics(Duration(milliseconds: 500));
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        appBar: new AppBar(
          title: const Text('Flutter PDF Viewer'),
        ),
        body: new Center(
          child: ListView(
            children: [
              FromAsset(),
              FromUrl(),
              FromBytes(),
              AnalyticsView(),
            ],
          ),
        ),
      ),
    );
  }
}

var choices = [
  'default',
  'nightMode: true',
  'enableSwipe: false',
  'swipeHorizontal: true',
  'autoSpacing: true',
  'pageFling: true',
  'pageSnap: true',
  'enableImmersive: true',
  'autoPlay: true',
  'slideshow',
];

class FromAsset extends StatefulWidget {
  List<DropdownMenuItem> get items {
    List<DropdownMenuItem> items = [];
    for (int i = 0; i < choices.length; i++) {
      items.add(
        DropdownMenuItem(child: Text(choices[i]), value: i),
      );
    }
    return items;
  }

  @override
  FromAssetState createState() {
    return new FromAssetState();
  }
}

class FromAssetState extends State<FromAsset> {
  int _value = 0;

  @override
  Widget build(BuildContext context) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Padding(
          padding: const EdgeInsets.all(10.0),
          child: DropdownButton(
            value: _value,
            items: widget.items,
            onChanged: (value) {
              setState(() {
                _value = value;
              });
            },
          ),
        ),
        RaisedButton(
          child: Text("loadAsset()"),
          onPressed: () {
            PdfViewer.loadAsset(
              'assets/test.pdf',
              config: PdfViewerConfig(
                nightMode: _value == 1,
                swipeHorizontal: _value == 3 || _value == 9,
                autoSpacing: _value == 4 || _value == 9,
                pageFling: _value == 5 || _value == 9,
                pageSnap: _value == 6 || _value == 9,
                enableImmersive: _value == 7,
                autoPlay: _value == 8,
                videoPages: [VideoPage.fromAsset(8, "assets/buck_bunny.mp4")],
              ),
            );
          },
        ),
      ],
    );
  }
}

class FromUrl extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: RaisedButton(
        onPressed: () async {
          Scaffold.of(context).showSnackBar(
            SnackBar(
              content: Text('Downloading...'),
              duration: Duration(days: 24),
            ),
          );

          String filePath = await downloadAsFile(
            'https://mozilla.github.io/pdf.js/web/compressed.tracemonkey-pldi-09.pdf',
          );

          Scaffold.of(context).hideCurrentSnackBar();
          print('Downloaded - $filePath');

          PdfViewer.loadFile(filePath);
        },
        child: Text('downloadAsFile(cache: true) -> loadFile()'),
      ),
    );
  }
}

class FromBytes extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: RaisedButton(
        onPressed: () async {
          Scaffold.of(context).showSnackBar(
            SnackBar(
              content: Text('Downloading...'),
              duration: Duration(days: 24),
            ),
          );

          Uint8List bytes = await downloadAsBytes(
            'https://mozilla.github.io/pdf.js/web/compressed.tracemonkey-pldi-09.pdf',
          );

          print('Downloaded as bytes');
          Scaffold.of(context).hideCurrentSnackBar();

          PdfViewer.loadBytes(bytes);
        },
        child: Text('downloadAsBytes(cache: false) -> loadBytes()'),
      ),
    );
  }
}

class AnalyticsView extends StatefulWidget {
  @override
  _AnalyticsViewState createState() => _AnalyticsViewState();
}

class _AnalyticsViewState extends State<AnalyticsView> {
  Map _analytics = {};

  @override
  Widget build(BuildContext context) {
    return Container(
      child: Column(
          children: <Widget>[
                RaisedButton(
                  child: Text("getAnalytics(null)"),
                  onPressed: () async {
                    Map records = await PdfViewer.getAnalytics(null);
                    setState(() => _analytics = records);
                  },
                ),
              ] +
              _analytics.keys
                  .map((page) => Text("$page - ${_analytics[page]}"))
                  .toList()),
    );
  }
}