Xamarin.Android OnActivityResult 未在片段内调用

看起来好像 OnActivityResult 在接受从相机拍摄的照片后没有被调用。

我调用 StartActivityForResult() 是错误的吗？或者我缺少什么。

 public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Android.OS.Bundle savedInstanceState)
        {
            var m_View = inflater.Inflate (Resource.Layout.Feed, null);

            btnCamera = m_View.FindViewById<Button> (Resource.Id.btnCamera);
            btnGallery = m_View.FindViewById<Button> (Resource.Id.btnGallery);

            ivPicture = m_View.FindViewById<ImageView> (Resource.Id.imageView1);

            btnCamera.Click += (sender, e) => {
                //launch gallery
                //allow photo editing/saving

                var mediaPicker = new MediaPicker (Activity);
                if (!mediaPicker.IsCameraAvailable){
//                      Console.WriteLine ("No Camera!");
                }else {
                    Intent intent = new Intent(MediaStore.ActionImageCapture);
                    StartActivityForResult(intent, 0);
                }
            };

            btnGallery.Click += (sender, e) => {
                //launch gallery
                //allow photo editing/saving
                var imageIntent = new Intent ();
                imageIntent.SetType ("image/*");
                imageIntent.SetAction (Intent.ActionGetContent);
                StartActivityForResult (
                    Intent.CreateChooser (imageIntent, "Select photo"), 0);

            };

            return m_View;
        }

        protected virtual void OnActivityResult (int requestCode, Result resultCode, Intent data)
        {
            System.Console.WriteLine ("WOOOOOOOOOOOOOOOOOOOOOOOOOOOO");
            Uri contentUri = data.Data;
            ivPicture.SetImageURI (data.Data);

        }

嗯..我创建了一个示例，它对我来说效果很好。我看到的唯一区别是它看起来像你的override是不正确的。它应该是公共重写 void OnActivityResult()

public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
    var rootView = inflater.Inflate(Resource.Layout.MainFragment, container, false);
    var button = rootView.FindViewById<Button>(Resource.Id.button_camera);
    button.Click += (sender, args) =>
    {
        var intent = new Intent(MediaStore.ActionImageCapture);
        StartActivityForResult(intent, 0);
    };
    return rootView;
}

public override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
    Log.Debug("TestFragment", "Got result");

    // do what you want with the result here
}