Is there any solution for my code in Flutter? - flutter

Question

I want to render all of the pdfs' first page as images and pass them to Home Screen. I make Splash Screen's duration to 30second. But I think it is not right because there can be hundreds of pdfs in someone's phone storage and Splash Screen's duration can be longer than 30seconds. So is there any solution to my problem? Here is my code. Enlighten me pls.
import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:native_pdf_renderer/native_pdf_renderer.dart';
import 'package:splash_screen_view/SplashScreenView.dart';
import 'constant.dart';
import 'package:permission_handler/permission_handler.dart';
import 'home_screen.dart';
class Splashscreens extends StatefulWidget {
_SplashscreensState createState() => _SplashscreensState();
}
class _SplashscreensState extends State<Splashscreens> {
List<FileSystemEntity>? filepdf;
List<Uint8List>? imagepdf = [];
void initState() {
super.initState();
getFile();
}
getFile() async {
await Permission.storage.request();
final myDir = Directory('/storage/emulated/0/documents/');
filepdf = myDir.listSync(recursive: true, followLinks: true);
for (int index = 0; index < filepdf!.length; index++) {
final document = await PdfDocument.openFile(filepdf![index].path);
final page = await document.getPage(1);
final pageImage = await page.render(width: page.width, height: page.height);
setState(() {
imagepdf!.add(pageImage!.bytes);
});
}
}
#override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
body: SplashScreenView(
navigateRoute: HomeScreen(filepdf, imagepdf),
duration: 25000,
imageSize: 650,
imageSrc: "assets/image/jensenpdfviewerlogo.jpg",
colors: [
Colors.purple,
Colors.blue,
Colors.yellow,
Colors.red,
Colors.orange,
Color(0xFFECECEC)
],
pageRouteTransition: PageRouteTransition.SlideTransition,
text: "LOADING......",
textType: TextType.ColorizeAnimationText,
textStyle: fontStyle,
backgroundColor: Color(0xFF4E4AC2),
),
),
);
}
}

Answer 1

Here is my suggestion
class Splashscreens extends StatefulWidget {
_SplashscreensState createState() => _SplashscreensState();
}
class _SplashscreensState extends State<Splashscreens> {
List<FileSystemEntity>? filepdf;
List<Uint8List>? imagepdf = [];
Future<Map<String, dynamic>> getFile() async {
await Permission.storage.request();
final myDir = Directory('/storage/emulated/0/documents/');
filepdf = myDir.listSync(recursive: true, followLinks: true);
for (int index = 0; index < filepdf!.length; index++) {
final document = await PdfDocument.openFile(filepdf![index].path);
final page = await document.getPage(1);
final pageImage = await page.render(width: page.width, height: page.height);
setState(() {
imagepdf!.add(pageImage!.bytes);
});
}
var data = {
"file_pdf": filepdf,
"image_pdf": imagepdf
};
return data;
}
#override
Widget build(BuildContext context) {
return FutureBuilder(
future: getFile(),
builder: (BuildContext context, AsyncSnapshot<Map<String, dynamic>> snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.waiting:
return Center(child: CircularProgressIndicator());
case ConnectionState.done:
Map<String, dynamic> data = snapshot.data!;
List<FileSystemEntity>? _filePdf = data["file_pdf"];
List<Uint8List>? _imagepdf = data["image_pdf"];
return YourResultScreen();
default:
return Container();
}
}
);
}
}