ACTION_IMAGE_CAPTURE returns imagefile as Extra instead of Data

问题

One feature of my app includes the camera. The user takes a picture and the app displays the image.

I start an intent with ACTION_IMAGE_CAPTURE using StartActivityForResult and capture the response with onActivityResult. Usually I can simply call getData() on the intent I receive in onActivityResult and get the content uri for the MediaProvider.

My problem is the following: One one of my test devices, a Huawei ALE-L21, the intent I get in onActivityResult has no data, but instead, it has a parcellable extra. How could I get the users photo from that? Android Studio doesn't tell me the name of the parcellable extra either

Disclaimer: I call getActivity() because I'm using this code in a fragment

This is what I use to get the camera.

Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
    startActivityForResult(takePictureIntent, getResources().getInteger(R.integer.RQ_PERMISSION_WRITE_EXTERNAL_STORAGE));
}

And here's the code in my onActivityResult

@Override
public void onActivityResult(int requestCode, int resultCode, Intent resultIntent) {
    super.onActivityResult(requestCode, resultCode, resultIntent);

    switch (requestCode) {
        case 1: //RQ_ImageCapture
        case 2: //RQ_ImageSelected
            if (resultIntent != null) {
                try {
                    Uri selectedImage = resultIntent.getData();
                    if(selectedImage != null) {
                        Bitmap bitmap = 
                        MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), selectedImage);
                        setImageAsBackground(selectedImage, bitmap);
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            break;
    }
}

回答1:

Usually I can simply call getData() on the intent I receive in onActivityResult and get the content uri for the MediaProvider.

Your code will fail on many of them, including all recent Nexus devices. ACTION_IMAGE_CAPTURE is not supposed to return a Uri. Quoting the documentation:

If the EXTRA_OUTPUT is not present, then a small sized image is returned as a Bitmap object in the extra field. This is useful for applications that only need a small image. If the EXTRA_OUTPUT is present, then the full-sized image will be written to the Uri value of EXTRA_OUTPUT.

Since you are not including EXTRA_OUTPUT, you will get a data extra (getData().getExtra("data")) with a thumbnail image.

the intent I get in onActivityResult has no data, but instead, it has a parcellable extra

Given your ACTION_IMAGE_CAPTURE request, that is what you are supposed to get.

If you want a full-size image, include EXTRA_OUTPUT, perhaps pointing to a FileProvider in your app, such as I demonstrate in this sample app. Then, you know the Uri where the photo should go, because you specified that Uri.

来源：https://stackoverflow.com/questions/38851665/action-image-capture-returns-imagefile-as-extra-instead-of-data

标签

android

android-intent

camera

android-5.0-lollipop

huawei