onActivityResult返回resultCode = -1

Question

我有这个代码，允许我从SD卡中选择文件并将其上传到服务器，它在一个活动中运行良好。现在我切换到片段并使用相同的代码，但它不起作用。发生的事情是调用onActivityResult（）并选择文件弹出窗口，当我选择文件时，resultCode = -1没有任何反应。我不知道如何解决这个问题。

以下是onActivityResult（）的代码：

public void selectFile() {

    Intent intent = new Intent();
    intent.setType("*/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    startActivityForResult(Intent.createChooser(intent, "Select File"), FILE_SELECT_CODE);

}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.i("Here ","onActivityResult");
    Log.i("Here ","onActivityResult");
    Log.i("resultCode ",resultCode+"");
    if (resultCode == RESULT_OK) {
        Log.i("Here ","onActivityResult");
        if (requestCode == FILE_SELECT_CODE) {
            Log.i("Here ","onActivityResult");
            Uri selectedFileUri = data.getData();
            String uriString = selectedFileUri.toString();
            Log.i("UriString ", uriString);
            File fileToUpload = new File(uriString);


            if (uriString.startsWith("content://")) {
                Cursor cursor = null;
                try {
                    cursor = getActivity().getContentResolver().query(selectedFileUri, null, null, null, null);
                    if (cursor != null && cursor.moveToFirst()) {
                        uploadFileName = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
                    }
                    uploadFilePath = getPath(selectedFileUri);
                    Log.i("Upload File Path ", uploadFilePath);
                } finally {
                    cursor.close();
                }
            } else if (uriString.startsWith("file://")) {
                uploadFileName = fileToUpload.getName();
                uploadFilePath = uriString.replace("file://", "");
                Log.i("Upload File Path ", uploadFilePath);
            }
        }
    }
}




private String getPath(Uri selectedFileUri) {
    if (selectedFileUri == null)
        return null;
    String[] projection = {MediaStore.Images.Media.DATA};
    Cursor cursor = getActivity().getContentResolver().query(selectedFileUri, projection, null, null, null);
    if (cursor != null) {
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }
    return selectedFileUri.getPath();
}