public class MessageCenter extends AppCompatActivity
        implements Sent.OnFragmentInteractionListener, Received.OnFragmentInteractionListener, OnNavigationItemSelectedListener {
    PagerAdapter mAdapter;
    FrameLayout mPager;
    FragmentManager fragmentManager;
    FragmentTransaction ft;
    TextView txt1, txt2;
    SharedPreferences sp;
    SharedPreferences.Editor editor;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_message_center);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        FloatingActionButton fab = findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MessageCenter.this, WriteResponseMess.class);
                startActivity(intent);
            }
        });
        txt1 = findViewById(R.id.id_app);
        txt2 = findViewById(R.id.name_app);
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.addDrawerListener(toggle);
        toggle.syncState();
        NavigationView navigationView = findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
        /*mAdapter = new PagerAdapter(getSupportFragmentManager());
        mPager = findViewById(R.id.frame);*/
        navigationView.getMenu().findItem(R.id.received).setChecked(true);
        fragmentManager = getSupportFragmentManager();
        ft = fragmentManager.beginTransaction();
        ft.replace(R.id.frame, new Received());
        ft.commit();
        getPersonalData();
    }
    @Override
    public void onBackPressed() {
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            Intent intent = new Intent(MessageCenter.this, MainScreen.class);
            startActivity(intent);
            super.onBackPressed();
        }
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.home_menu, menu);
        return true;
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.home) {
            Intent intent = new Intent(getApplicationContext(), MainScreen.class);
            startActivity(intent);
        }
        return super.onOptionsItemSelected(item);
    }
    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
        int id = item.getItemId();
        Fragment fragment = null;
            if (id == R.id.received) {
                fragmentManager = getSupportFragmentManager();
                ft = fragmentManager.beginTransaction();
                ft.replace(R.id.frame, new Received());
                ft.commit();
            } else if (id == R.id.sended) {
                fragmentManager = getSupportFragmentManager();
                ft = fragmentManager.beginTransaction();
                ft.replace(R.id.frame, new Sent());
                ft.commit();
            }
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
    @Override
    public void onFragmentInteraction(Uri uri) {
    }
    @Override
    public void onPointerCaptureChanged(boolean hasCapture) {
    }
}{"can_delete": true, "can_reply": true, "subject": "\u0422\u0435\u0441\u0442\u043e\u0432\u043e\u0435 \u043f\u0438\u0441\u044c\u043c\u043e \u21162 \u0441 attachments ", "name": "Poltava - Amina Al-Shahoud", "attach": [{"size": 0.0, "name": "\udcd0\udc9d\udcd0\udcbe\udcd0\udcb2\udcd1\udc8b\udcd0\udcb9 \udcd1\udc82\udcd0\udcb5\udcd0\udcba\udcd1\udc81\udcd1\udc82\udcd0\udcbe\udcd0\udcb2\udcd1\udc8b\udcd0\udcb9 \udcd0\udcb4\udcd0\udcbe\udcd0\udcba\udcd1\udc83\udcd0\udcbc\udcd0\udcb5\udcd0\udcbd\udcd1\udc82.txt"}, {"size": 0.4443359375, "name": "\udcd0\udc9d\udcd0\udcbe\udcd0\udcb2\udcd1\udc8b\udcd0\udcb9 \udcd1\udc82\udcd0\udcb5\udcd0\udcba\udcd1\udc81\udcd1\udc82\udcd0\udcbe\udcd0\udcb2\udcd1\udc8b\udcd0\udcb9 \udcd0\udcb4\udcd0\udcbe\udcd0\udcba\udcd1\udc83\udcd0\udcbc\udcd0\udcb5\udcd0\udcbd\udcd1\udc82 (2).txt"}], "id": 1303651, "date": "20.08.18 13:16:54", "user_id": 28552, "body": "body", "type": 1}ViewMessage viewMessage = new ViewMessage();
viewMessage.getAttachesNames();
txt.append(Arrays.toString(viewMessage.getAttachesNames()) +"/n");defTab, ведь у меня тогда ничего не изменилось кроме того что приходит данные на активити?