60 lines
1.9 KiB
C#
60 lines
1.9 KiB
C#
|
using System;
|
|||
|
|
using System.Collections.Generic;
|
|||
|
|
using System.Linq;
|
|||
|
|
using System.Text;
|
|||
|
|
using System.Threading.Tasks;
|
|||
|
|
|
|||
|
|
namespace DuoDuo.Services
|
|||
|
|
{
|
|||
|
|
public class CameraService : XiaoZhiSharp.Services.ICameraService
|
|||
|
|
{
|
|||
|
|
public CameraService() { }
|
|||
|
|
// 检查相机是否可用
|
|||
|
|
public bool IsCameraAvailable()
|
|||
|
|
{
|
|||
|
|
return MediaPicker.Default.IsCaptureSupported;
|
|||
|
|
}
|
|||
|
|
// 检查是否有相机权限
|
|||
|
|
public bool HasCameraPermission()
|
|||
|
|
{
|
|||
|
|
var status = Permissions.CheckStatusAsync<Permissions.Camera>().Result;
|
|||
|
|
return status == PermissionStatus.Granted;
|
|||
|
|
}
|
|||
|
|
// 请求相机权限
|
|||
|
|
public async Task<bool> RequestCameraPermissionAsync()
|
|||
|
|
{
|
|||
|
|
var status = await Permissions.RequestAsync<Permissions.Camera>();
|
|||
|
|
return status == PermissionStatus.Granted;
|
|||
|
|
}
|
|||
|
|
// 拍照并获取图像数据
|
|||
|
|
public async Task<byte[]?> CapturePhotoAsync()
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
// 检查权限
|
|||
|
|
if (!HasCameraPermission())
|
|||
|
|
{
|
|||
|
|
if (!await RequestCameraPermissionAsync())
|
|||
|
|
{
|
|||
|
|
throw new PermissionException("Camera permission not granted");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
// 拍照（保存到临时文件）
|
|||
|
|
var photo = await MediaPicker.Default.CapturePhotoAsync();
|
|||
|
|
if (photo == null) return null;
|
|||
|
|
|
|||
|
|
// 直接读取为内存流
|
|||
|
|
using var stream = await photo.OpenReadAsync();
|
|||
|
|
using var memoryStream = new MemoryStream();
|
|||
|
|
await stream.CopyToAsync(memoryStream);
|
|||
|
|
return memoryStream.ToArray();
|
|||
|
|
}
|
|||
|
|
catch (Exception ex)
|
|||
|
|
{
|
|||
|
|
Console.WriteLine($"Error capturing photo: {ex.Message}");
|
|||
|
|
throw;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|