Flutter模糊检测插件blur_detector的使用

使用此插件我们可以轻松地检测目录中的任何文件或文件夹。

特性

    - 扫描目录中的文件
    - 扫描目录中的音频文件
    - 扫描目录中的视频文件
    - 扫描目录中的图像文件
    - 扫描目录中的任意类型文件
    - 获取目录中的所有子目录

支持的平台

• Android

使用方法

授予权限

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

示例代码

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Blur Detector Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const BlurDetectorScreen(),
    );
  }
}

class BlurDetectorScreen extends StatefulWidget {
  const BlurDetectorScreen({Key? key}) : super(key: key);

  [@override](/user/override)
  _BlurDetectorScreenState createState() => _BlurDetectorScreenState();
}

class _BlurDetectorScreenState extends State<BlurDetectorScreen> {
  final ImagePicker _picker = ImagePicker();
  File? _image;
  String _result = '';

  // 选择图像
  Future<void> _pickImage() async {
    final XFile? image = await _picker.pickImage(source: ImageSource.gallery);

    if (image != null) {
      setState(() {
        _image = File(image.path);
        _result = ''; // 清空结果
      });

      // 检测图像是否清晰
      final bool isImageClear = await BlurRadio.evaluateImageQuality(
        image: File(image.path),
        acceptableBlurThreshold: 50, // 可接受的模糊阈值
      );

      setState(() {
        _result = isImageClear
            ? "The image is clear and readable."
            : "The image is blurry or text is not readable.";
      });
    }
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Blur Detector Example'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            // 显示选中的图像
            if (_image != null) Image.file(_image!),
            const SizedBox(height: 20),
            ElevatedButton(
              onPressed: _pickImage,
              child: const Text('Pick an Image'),
            ),
            const SizedBox(height: 20),
            // 显示检测结果
            Text(
              _result,
              style: const TextStyle(fontSize: 18),
            ),
          ],
        ),
      ),
    );
  }
}