ricoh_theta 是一个用于控制 Ricoh Theta 相机的 Flutter 插件。通过这个插件，你可以在 Flutter 应用中实现与 Ricoh Theta 相机的连接、拍照、录像等功能。以下是如何使用 ricoh_theta 插件的基本步骤：

1. 添加依赖

首先，在 pubspec.yaml 文件中添加 ricoh_theta 插件的依赖：

dependencies:
  flutter:
    sdk: flutter
  ricoh_theta: ^0.1.0  # 请使用最新版本

然后运行 flutter pub get 来获取依赖。

2. 导入插件

在你的 Dart 文件中导入 ricoh_theta 插件：

import 'package:ricoh_theta/ricoh_theta.dart';

3. 初始化插件

在使用插件之前，需要先初始化它：

RicohTheta ricohTheta = RicohTheta();

4. 连接相机

使用 connect 方法连接到 Ricoh Theta 相机：

void connectCamera() async {
  try {
    await ricohTheta.connect();
    print("Connected to Ricoh Theta");
  } catch (e) {
    print("Failed to connect: $e");
  }
}

5. 拍照

使用 takePicture 方法拍照：

void takePicture() async {
  try {
    String imagePath = await ricohTheta.takePicture();
    print("Picture saved at: $imagePath");
  } catch (e) {
    print("Failed to take picture: $e");
  }
}

6. 录像

使用 startVideoCapture 和 stopVideoCapture 方法进行录像：

void startRecording() async {
  try {
    await ricohTheta.startVideoCapture();
    print("Started recording");
  } catch (e) {
    print("Failed to start recording: $e");
  }
}

void stopRecording() async {
  try {
    String videoPath = await ricohTheta.stopVideoCapture();
    print("Video saved at: $videoPath");
  } catch (e) {
    print("Failed to stop recording: $e");
  }
}

7. 断开连接

使用 disconnect 方法断开与相机的连接：

void disconnectCamera() async {
  try {
    await ricohTheta.disconnect();
    print("Disconnected from Ricoh Theta");
  } catch (e) {
    print("Failed to disconnect: $e");
  }
}

8. 处理相机状态

你可以监听相机的状态变化：

ricohTheta.onStateChanged.listen((state) {
  print("Camera state changed: $state");
});

9. 处理错误

在处理相机操作时，可能会遇到错误，建议使用 try-catch 块来捕获和处理这些错误。

10. 示例代码

以下是一个完整的示例代码：

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: RicohThetaScreen(),
    );
  }
}

class RicohThetaScreen extends StatefulWidget {
  [@override](/user/override)
  _RicohThetaScreenState createState() => _RicohThetaScreenState();
}

class _RicohThetaScreenState extends State<RicohThetaScreen> {
  RicohTheta ricohTheta = RicohTheta();

  [@override](/user/override)
  void initState() {
    super.initState();
    ricohTheta.onStateChanged.listen((state) {
      print("Camera state changed: $state");
    });
  }

  void connectCamera() async {
    try {
      await ricohTheta.connect();
      print("Connected to Ricoh Theta");
    } catch (e) {
      print("Failed to connect: $e");
    }
  }

  void takePicture() async {
    try {
      String imagePath = await ricohTheta.takePicture();
      print("Picture saved at: $imagePath");
    } catch (e) {
      print("Failed to take picture: $e");
    }
  }

  void startRecording() async {
    try {
      await ricohTheta.startVideoCapture();
      print("Started recording");
    } catch (e) {
      print("Failed to start recording: $e");
    }
  }

  void stopRecording() async {
    try {
      String videoPath = await ricohTheta.stopVideoCapture();
      print("Video saved at: $videoPath");
    } catch (e) {
      print("Failed to stop recording: $e");
    }
  }

  void disconnectCamera() async {
    try {
      await ricohTheta.disconnect();
      print("Disconnected from Ricoh Theta");
    } catch (e) {
      print("Failed to disconnect: $e");
    }
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Ricoh Theta Control"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            ElevatedButton(
              onPressed: connectCamera,
              child: Text("Connect"),
            ),
            ElevatedButton(
              onPressed: takePicture,
              child: Text("Take Picture"),
            ),
            ElevatedButton(
              onPressed: startRecording,
              child: Text("Start Recording"),
            ),
            ElevatedButton(
              onPressed: stopRecording,
              child: Text("Stop Recording"),
            ),
            ElevatedButton(
              onPressed: disconnectCamera,
              child: Text("Disconnect"),
            ),
          ],
        ),
      ),
    );
  }
}