c# - 如何在 Xamarin 中拍照？

Question

我正在尝试使用 Android.Hardware 中的 Camera 类拍照。我正在获取信息，相机正在自动对焦。问题是我不知道如何拍照。

_camera = Camera.Open();
Camera.Parameters param = _camera.GetParameters();
param.FocusMode = Camera.Parameters.FocusModeContinuousPicture;
_camera.SetParameters(param);


var previewSize = _camera.GetParameters().PreviewSize;
_textureView.LayoutParameters =
    new FrameLayout.LayoutParams(previewSize.Width,
        previewSize.Height, GravityFlags.Center);

try
{
    _camera.SetPreviewTexture(surface);
    _camera.StartPreview();
}
catch (Java.IO.IOException ex)
{
    System.Console.WriteLine(ex.Message);
}

// this is the sort of thing TextureView enables
_textureView.Rotation = 90.0f;

Answer 1

此链接可能会帮助您解决此问题https://developer.xamarin.com/recipes/android/other_ux/camera_intent/take_a_picture_and_save_using_camera_app/

但是您可以使用此代码来拍照(TakeAPicture)。

private void TakeAPicture (object sender, EventArgs eventArgs)
{
    Intent intent = new Intent (MediaStore.ActionImageCapture);
    App._file = new File (App._dir, String.Format("myPhoto_{0}.jpg", Guid.NewGuid()));
    intent.PutExtra (MediaStore.ExtraOutput, Uri.FromFile (App._file));
    StartActivityForResult (intent, 0);
}

祝你编码愉快! :)