How to upload selected video from nougat, path returning null

问题

I want to upload video selecting from gallery.

I am using Intent to select video from device:

Intent intent = new Intent();
intent.setType("video/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Video"), PICK_VIDEO_REQUEST);

after that:

 public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == REQUEST_TAKE_GALLERY_VIDEO) {
                Uri filePath = data.getData();
                try {
                    String[] projection = {MediaStore.Video.Media.DATA};
                    Cursor cursor = getContentResolver().query(filePath, projection, null, null, null);
                    cursor.moveToFirst();
                    int columnIndex = cursor.getColumnIndex(projection[0]);
                    String videoPath = cursor.getString(columnIndex);
                } catch (Exception e) {
                    Log.e("error", e.getMessage());
                }

            }
        }
    }

but when i am getting path in onActivityResult() it is returning null. I came to know that there is a change in nougat, but can't find any solution.

My code is working in all versions of android except nougat.

please anybody help.

回答1:

The "Android-Multipicker-Library" allows you to pick any kind of path in android particularly "Nougat"

回答2:

My code is working in all versions of android except nougat.

Not really. It might work in a couple of scenarios on a few devices.

Your code assumes that the Uri that you get back:

• Has the content scheme
• Is from a provider that will return some value for MediaStore.Video.Media.DATA when queried on that Uri
• Is one where that path is to external storage, and therefore is one that you can use

None of that is necessarily true:

• On older devices, you are more likely to get a Uri with the file scheme
• Any app can implement ACTION_GET_CONTENT for video/*, and they can hand back whatever they want for a Uri
• Providers other than MediaStore do not have to honor MediaStore.Video.Media.DATA
• The MediaStore indexes media on removable storage, whose paths are useless to you, as you have no read access to arbitrary locations on removable storage on Android 4.4+

To use a content Uri, call openInputStream() on a ContentResolver, to get an InputStream on the content. Either use the InputStream directly, or use it to make a copy of the content to some FileOutputStream on a file that you control.

来源：https://stackoverflow.com/questions/42508885/how-to-upload-selected-video-from-nougat-path-returning-null