native_pdf_viewer_plugin 0.0.3

A new flutter plugin project.

example/lib/main.dart

import 'dart:io';

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

import 'package:flutter/foundation.dart';
import 'package:path_provider/path_provider.dart';
import 'package:pdf_viewer_plugin/pdf_viewer_scaffold.dart';

void main() {
  runApp(MaterialApp(
    title: 'Plugin example app',
    home: MyApp(),
  ));
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String pathPDF = "";

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  void initPlatformState() {
    createFileOfPdfUrl().then((f) {
      setState(() {
        pathPDF = f.path;
        print(pathPDF);
      });
    });
  }

  Future<File> createFileOfPdfUrl() async {
    String dir = (await getApplicationDocumentsDirectory()).path;
    final url = "http://africau.edu/images/default/sample.pdf";
    final filename = url.substring(url.lastIndexOf("/") + 1);
    File file = new File('$dir/$filename');
    if (await file.exists()) {
      return file;
    }
    var request = await HttpClient().getUrl(Uri.parse(url));
    var response = await request.close();
    var bytes = await consolidateHttpClientResponseBytes(response);
    await file.writeAsBytes(bytes);
    return file;
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Plugin example app')),
      body: Center(
        child: RaisedButton(
          child: Text("Open PDF"),
          onPressed: () => Navigator.push(
            context,
            MaterialPageRoute(builder: (context) => PDFScreen(pathPDF)),
          ),
        ),
      ),
    );
  }
}

class PDFScreen extends StatelessWidget {
  String pathPDF = "";
  String password = "";
  PDFScreen(this.pathPDF);
  GlobalKey<PDFViewScaffoldState> _state = GlobalKey<PDFViewScaffoldState>();

  @override
  Widget build(BuildContext context) {
    return PDFViewerScaffold(
        key: _state,
        appBar: AppBar(
          title: Text("Document"),
          actions: <Widget>[
            IconButton(
              icon: Icon(Icons.share),
              onPressed: () {
                _state.currentState.shareFile(pathPDF);
              },
            ),
          ],
        ),
        path: pathPDF,
        pass: password,
        mode: "fromFile");
  }
}