Xamarin.Android OnActivityResult 未在 Fragment 内调用 [英] Xamarin.Android OnActivityResult not being called inside a Fragment

问题描述

在接受从相机拍摄的照片后，似乎没有调用 OnActivityResult.

It appears as if OnActivityResult does not get called after accepting the picture taken from the camera.

我调用 StartActivityForResult() 是错误的吗?还是我遗漏了什么.

 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);

        }

推荐答案

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您的 override 看起来不正确.它应该是 public override void OnActivityResult()

Hmm.. I created a sample and it worked just fine for me. The only difference I see is that it looks like your override is not correct. It should be public override 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
}

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