unity ios系统拍照和录制视频

在Unity中集成iOS系统的拍照和录像功能需要借助Unity提供的插件或平台支持。Unity本身并不直接提供iOS原生的API访问，而是通过Objective-C或Swift编写的游戏脚本来间接操作。

1. **拍照** (Photos): 使用Unity-iPhone的`AVFoundation`插件，你可以创建一个UIImagePickerController实例，然后请求用户选择照片。示例代码如下：

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Experimental.XR;
using System.IO;
using UnityEngine.Video;

public class CameraManager : MonoBehaviour
{
    public Button takePhotoButton;
    
    void Start()
    {
        takePhotoButton.onClick.AddListener(TakePhoto);
    }

    async void TakePhoto()
    {
        var imagePickerController = new UIImagePickerController();
        imagePickerControllerSourceType = UIImagePickerControllerSourceType PhotoLibrary;
        if (imagePickerController.Show (UIImagePickerControllerMode.PhotoLibrary))
        {
            var result = await imagePickerController.PromptForSingleImageAsync();
            if (result != null)
            {
                // 获取照片路径并处理图片
                string photoPath = result.FullPath;
                ProcessImage(photoPath);
            }
        }
    }

    // 这里你需要实现如何处理获取到的照片
    void ProcessImage(string imagePath)
    {
        Debug.Log("Image path: " + imagePath);
    }
}

2. **录制视频** (AVCaptureVideoRecorder): 为了录制视频，你需要使用AVFoundation的AVCaptureSession。首先创建一个 AVCaptureSession 实例，然后设置输入设备、输出设备和开始录制。注意，这通常需要用户授权才能访问摄像头和麦克风。

void StartRecording()
{
    // 初始化设备
    var videoInputDevice = GetCameraDeviceWithMediaType(AVMediaType.Video);
    var audioInputDevice = GetMicrophoneDevice();

    // 创建session
    var captureSession = new AVCaptureSession();

    // 添加输入和输出
    captureSession.AddInput(videoInputDevice);
    if (audioInputDevice != null)
    {
        captureSession.AddInput(audioInputDevice);
    }

    var videoOutput = new AVCaptureMovieFileOutput();
    captureSession.AddOutput(videoOutput);

    // 设置输出文件URL
    var outputFileUrl = Path.Combine(Application.persistentDataPath, "myVideo.mp4");

    // 开始录制
    if (captureSession.StartRunning())
    {
        videoOutput.Set录音Automatically(true); // 开启音频自动同步
        videoOutput.RecordToOutputFileAsynchronously(outputFileUrl);
    }
}

// 获取摄像头设备和音频设备
AVCaptureDevice GetCameraDeviceWithMediaType(NSString mediaType)
{
    // ...
}

AVCaptureDevice GetMicrophoneDevice()
{
    // ...
}