Android SQLite query or insert not working properly

First of all I am new to android programming so please go easy of me and thanks in advance. So I have a simple, two activity android blog app. I create blogs in one activity and display them in the other. For the start each blog has the same title and author, but user can insert the content. When I insert content everything seems to be fine. However when I'm loading a blog title displays fine and content stays empty, can anyone help me?

This is loading code:

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    Button loadButton = (Button) findViewById(R.id.loadButton);
    final TextView titleDisplay = (TextView) findViewById(R.id.titleLoadDisplay);
    final TextView contentDisplay = (TextView) findViewById(R.id.contentLoadDisplay);

    BlogDbHelper dbHelper = new BlogDbHelper(getApplicationContext());
    final SQLiteDatabase db = dbHelper.getReadableDatabase();

    //What I will use after the query
    final String[] projection = {
        BlogContract.BlogEntry.BLOG_TITLE,
        BlogContract.BlogEntry.BLOG_CONTENT
    };

    if (loadButton != null) {
        loadButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                    Cursor res = db.query(
                            BlogContract.BlogEntry.TABLE_NAME,
                            projection,
                            null,
                            null,
                            null,
                            null,
                            null
                    );

                    res.moveToFirst();
                    if (titleDisplay != null) {
                        titleDisplay.setText(res.getString(res.getColumnIndex(BlogContract.BlogEntry.BLOG_TITLE)));
                    }
                    if (contentDisplay != null) {
                        contentDisplay.setText(res.getString(res.getColumnIndex(BlogContract.BlogEntry.BLOG_CONTENT)));
                    }
            }
        });
    }

//        blogList.setAdapter(adapter);

    }

This is uploading code:

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_create_blog);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    final EditText blogContentInput = (EditText) findViewById(R.id.blogContent);
    String blogContent = null;
    if (blogContentInput != null) {
        blogContent = String.valueOf(blogContentInput.getText());
    }else{
        Log.e("Blog Content","BLog content not instantiated");
    }

    BlogDbHelper dbHelper = new BlogDbHelper(getApplicationContext());
    final SQLiteDatabase db = dbHelper.getWritableDatabase();

    if (fab != null) {
        final String finalBlogContent = blogContent;
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Log.e("Content", "Blog content " + String.valueOf(blogContentInput.getText()));
                ContentValues values = new ContentValues();
                values.put(BlogContract.BlogEntry.BLOG_TITLE, "Practice_02");
                values.put(BlogContract.BlogEntry.BLOG_AUTHOR, "MarkoVlaic");
                values.put(BlogContract.BlogEntry.BLOG_CONTENT, String.valueOf(blogContentInput.getText()));
                long newRowId;
                newRowId = db.insertWithOnConflict(BlogContract.BlogEntry.TABLE_NAME, null, values,SQLiteDatabase.CONFLICT_REPLACE);
                blogContentInput.setText("");
                Snackbar.make(view, "You uploaded a blog", Snackbar.LENGTH_SHORT).show();
                /*Intent intent = new Intent(view.getContext(),MainActivity.class);
                startActivity(intent);*/
            }
        });
    }
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}