打开图片库(相册)在Flutter中的应用

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';

class ImagePickerExample extends StatefulWidget {
  @override
  _ImagePickerExampleState createState() => _ImagePickerExampleState();
}

class _ImagePickerExampleState extends State<ImagePickerExample> {
  XFile? _image;

  Future<void> _openImageLibrary() async {
    try {
      final pickedFile = await ImagePicker().pickImage(source: ImageSource.gallery);
      if (pickedFile != null) {
        setState(() {
          _image = pickedFile;
        });
      }
    } catch (e) {
      print("Error picking image: $e");
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Image Picker Example'),
      ),
      body: Center(
        child: _image == null
            ? Text('No image selected.')
            : Image.file(File(_image!.path)),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _openImageLibrary,
        tooltip: 'Pick Image',
        child: Icon(Icons.add_a_photo),
      ),
    );
  }
}