Flutter图像生成插件stability_image_generation的使用

发布于 1周前 作者 gougou168 来自 Flutter

Flutter图像生成插件stability_image_generation的使用

Stability Logo

简介

Stability Image Generation 是一个全新的AI图像生成工具，可以通过简单的文本提示生成令人惊叹的图像。

特点

  • 从文本生成图像：只需输入描述性文本，即可生成图像。
  • 高质量：生成的图像具有高分辨率和高质量。
  • 多种风格：支持超过10种不同的图像风格。
  • 自定义风格：用户可以自行添加新的风格。

使用方法

安装

  1. 创建免费API密钥：

    • 访问 DreamStudio 并创建一个免费的API密钥。

  2. 导入包：

    import 'package:stability_image_generation/stability_image_generation.dart';

  3. 初始化AI类：

    final StabilityAI _ai = StabilityAI();

生成图像

  1. 获取图像数据：

    Future<Uint8List> _generate(String query) async {
  /// 调用generateImage方法并传入所需参数。
  Uint8List image = await _ai.generateImage(
    apiKey: apiKey,
    imageAIStyle: imageAIStyle,
    prompt: query,
  );
  return image;
}

  2. 显示图像：

    return FutureBuilder<Uint8List>(
  // 调用_generate()函数获取图像数据
  future: _generate('YOUR TEXT'), 
  builder: (context, snapshot) {
    if (snapshot.connectionState == ConnectionState.waiting) {
      // 等待图像数据时显示加载指示器
      return const CircularProgressIndicator();
    } else if (snapshot.hasError) {
      // 获取图像数据时发生错误，显示错误信息
      return Text('Error: ${snapshot.error}');
    } else if (snapshot.hasData) {
      // 图像数据可用时，使用Image.memory()显示图像
      return Image.memory(snapshot.data!);
    } else {
      // 没有数据可用时，显示占位符或空容器
      return Container();
    }
  },
);

示例代码

以下是一个完整的示例代码，展示了如何在Flutter应用中使用stability_image_generation插件生成图像。

import 'dart:io' show Platform;
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:stability_image_generation/stability_image_generation.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(useMaterial3: true),
      home: const Test(title: 'Example'),
    );
  }
}

class Test extends StatefulWidget {
  final String title;

  const Test({Key? key, required this.title}) : super(key: key);

  @override
  State<Test> createState() => _TestState();
}

class _TestState extends State<Test> {
  final TextEditingController _queryController = TextEditingController();
  final StabilityAI _ai = StabilityAI();
  final String apiKey = 'sk-xxxxxx'; // 替换为你的API密钥
  final ImageAIStyle imageAIStyle = ImageAIStyle.christmas;
  bool run = false;

  Future<Uint8List> _generate(String query) async {
    Uint8List image = await _ai.generateImage(
      apiKey: apiKey,
      imageAIStyle: imageAIStyle,
      prompt: query,
    );
    return image;
  }

  @override
  void dispose() {
    _queryController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final double size = Platform.isAndroid || Platform.isIOS
        ? MediaQuery.of(context).size.width
        : MediaQuery.of(context).size.height / 2;
    return Scaffold(
      backgroundColor: Colors.grey.shade200,
      appBar: AppBar(title: Text(widget.title)),
      body: Center(
        child: SingleChildScrollView(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Container(
                width: double.infinity,
                height: 50,
                margin: const EdgeInsets.all(10),
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(15),
                  color: Colors.white,
                  border: Border.all(width: 0.5, color: Colors.grey.shade300),
                ),
                child: TextField(
                  controller: _queryController,
                  decoration: const InputDecoration(
                    hintText: 'Enter query text...',
                    border: InputBorder.none,
                    contentPadding: EdgeInsets.only(left: 8),
                  ),
                ),
              ),
              Padding(
                padding: const EdgeInsets.all(20),
                child: SizedBox(
                  height: size,
                  width: size,
                  child: run
                      ? FutureBuilder<Uint8List>(
                          future: _generate(_queryController.text),
                          builder: (context, snapshot) {
                            if (snapshot.connectionState == ConnectionState.waiting) {
                              return const Center(child: CircularProgressIndicator());
                            } else if (snapshot.hasError) {
                              return Text('Error: ${snapshot.error}');
                            } else if (snapshot.hasData) {
                              return ClipRRect(
                                borderRadius: BorderRadius.circular(10),
                                child: Image.memory(snapshot.data!),
                              );
                            } else {
                              return Container();
                            }
                          },
                        )
                      : const Center(
                          child: Text(
                            'Enter Text and Click the button to generate',
                            style: TextStyle(
                              fontStyle: FontStyle.italic,
                              fontWeight: FontWeight.bold,
                              fontSize: 16,
                            ),
                          ),
                        ),
                ),
              ),
            ],
          ),
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          String query = _queryController.text;
          if (query.isNotEmpty) {
            setState(() {
              run = true;
            });
          } else {
            if (kDebugMode) {
              print('Query is empty !!');
            }
          }
        },
        tooltip: 'Generate',
        child: const Icon(Icons.gesture),
      ),
    );
  }
}

许可证

BSD 3-Clause License

Copyright © 2023 Karl Mathuthu All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

  3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

开发者

Made with ❤️ by Karl Mathuthu


更多关于Flutter图像生成插件stability_image_generation的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html

Harmonyos Next教程
1 回复

更多关于Flutter图像生成插件stability_image_generation的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


当然，下面是一个关于如何使用Flutter图像生成插件stability_image_generation的示例代码。请注意，由于stability_image_generation可能不是一个广为人知的插件，我假设它具有一些基本的图像生成功能，比如生成二维码、图表等。以下示例将展示如何集成和使用该插件（假设插件的基本用法已经通过文档或示例明确）。

首先，确保在pubspec.yaml文件中添加插件依赖：

dependencies:
  flutter:
    sdk: flutter
  stability_image_generation: ^latest_version  # 替换为实际最新版本号

然后，运行flutter pub get来安装依赖。

接下来，在你的Flutter应用中导入插件并使用它。以下是一个简单的示例，展示如何生成一张二维码图像并显示它：

import 'package:flutter/material.dart';
import 'package:stability_image_generation/stability_image_generation.dart';  // 假设插件提供了这个导入路径

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Stability Image Generation Example'),
        ),
        body: Center(
          child: FutureBuilder<Uint8List>(
            future: generateQRCode(),
            builder: (context, snapshot) {
              if (snapshot.connectionState == ConnectionState.done) {
                if (snapshot.hasError) {
                  return Text('Error: ${snapshot.error}');
                } else {
                  return Image.memory(snapshot.data!);
                }
              } else {
                return CircularProgressIndicator();
              }
            },
          ),
        ),
      ),
    );
  }

  Future<Uint8List> generateQRCode() async {
    // 假设插件提供了generateQRCode方法，该方法接受文本内容并返回图像的字节数组
    String qrCodeText = "https://flutter.dev";
    try {
      Uint8List imageBytes = await StabilityImageGeneration.generateQRCode(qrCodeText);
      return imageBytes;
    } catch (e) {
      throw Exception('Failed to generate QR Code: $e');
    }
  }
}

在这个示例中，我们假设stability_image_generation插件提供了一个名为generateQRCode的静态方法，该方法接受一个字符串参数（例如，要编码为二维码的URL），并返回一个包含图像字节数组的Future<Uint8List>。我们使用FutureBuilder来异步加载并显示生成的图像。

请注意，上面的代码是基于假设的插件API编写的。实际使用时，你需要参考stability_image_generation插件的官方文档或源代码来了解其提供的具体方法和API。如果插件提供了其他类型的图像生成功能（如图表、条形码等），你可以类似地使用这些方法，并根据需要调整代码。

由于我无法直接访问stability_image_generation插件的实际实现和文档，因此上述示例仅作为如何使用假设图像生成插件的一般指导。在实际应用中，请务必参考插件的官方文档和示例代码。

回到顶部