如何在flutter中分享网络图片和pdf到其他应用程序？

dependencies:
  flutter_share: ^2.0.0
  flutter_pdfview: ^1.0.0

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

void shareImage() async {
  String imageUrl = 'https://example.com/image.jpg';
  
  try {
    await FlutterShare.shareImage(imageUrl: imageUrl);
  } catch (e) {
    print('分享失败：$e');
  }
}

void main() {
  runApp(MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: Text('分享网络图片'),
      ),
      body: Center(
        child: RaisedButton(
          child: Text('分享图片'),
          onPressed: shareImage,
        ),
      ),
    ),
  ));
}

import 'package:flutter/material.dart';
import 'package:flutter_pdfview/flutter_pdfview.dart';
import 'package:flutter_share/flutter_share.dart';

void sharePdf() async {
  String pdfUrl = 'https://example.com/document.pdf';
  
  try {
    await FlutterShare.shareFile(
      title: '分享PDF',
      filePath: pdfUrl,
    );
  } catch (e) {
    print('分享失败：$e');
  }
}

void main() {
  runApp(MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: Text('分享PDF文件'),
      ),
      body: Center(
        child: RaisedButton(
          child: Text('分享PDF'),
          onPressed: sharePdf,
        ),
      ),
    ),
  ));
}