Help please with the display of Fragments on Activiti, does not work with this code Taxi (fragment): '

public class Taxi extends Fragment { Button uber_call; Button uber_download; Button uklon_download; Button uklon_order_online; Button taxi_plus_call; Button taxi_plus_order_onlinecall; Button taxi_plus_download; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); uber_call = getView().findViewById(R.id.uber_call); uber_download = getView().findViewById(R.id.uber_download); uklon_download = getView().findViewById(R.id.uklon_download); uklon_order_online = getView().findViewById(R.id.uklon_order_online); taxi_plus_call = getView().findViewById(R.id.taxi_plus_call); taxi_plus_order_onlinecall = getView().findViewById(R.id.taxi_plus_order_online); taxi_plus_download = getView().findViewById(R.id.taxi_plus_download); View.OnClickListener onClickListener = new View.OnClickListener() { @Override public void onClick(View view) { switch (view.getId()) { case R.id.uber_call: startActivity(Intent.createChooser(new Intent(Intent.ACTION_DIAL, Uri.parse("tel:9988")), "Call")); break; case R.id.uber_download: startActivity(Intent.createChooser(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=com.ubercab&hl=en")), "Browser")); break; case R.id.uklon_download: startActivity(Intent.createChooser(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=ua.com.uklontaxi&hl=en")), "Browser")); break; case R.id.uklon_order_online: startActivity(Intent.createChooser(new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.uklon.com.ua/")), "Browser")); break; case R.id.taxi_plus_call: startActivity(Intent.createChooser(new Intent(Intent.ACTION_DIAL, Uri.parse("tel:244")), "Call")); break; case R.id.taxi_plus_order_online: startActivity(Intent.createChooser(new Intent(Intent.ACTION_VIEW, Uri.parse("http://taxiplus.ua/")), "Browser")); break; case R.id.taxi_plus_download: startActivity(Intent.createChooser(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=sss.taxi.plus")), "Browser")); break; } } }; uber_call.setOnClickListener(onClickListener); uber_download.setOnClickListener(onClickListener); uklon_download.setOnClickListener(onClickListener); uklon_order_online.setOnClickListener(onClickListener); taxi_plus_call.setOnClickListener(onClickListener); taxi_plus_order_onlinecall.setOnClickListener(onClickListener); taxi_plus_download.setOnClickListener(onClickListener); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_taxi, null); } }'

Drawer: '

 import android.app.FragmentTransaction; import android.content.Intent; import android.os.Bundle; import android.support.design.widget.FloatingActionButton; import android.view.View; import android.support.design.widget.NavigationView; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarDrawerToggle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.Menu; import android.view.MenuItem; public class Drawer extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { Taxi taxi; FragmentTransaction fragmentTransaction; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_drawer); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); DrawerLayout drawer = (DrawerLayout) 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 = (NavigationView) findViewById(R.id.nav_view); navigationView.setNavigationItemSelectedListener(this); } @SuppressWarnings("StatementWithEmptyBody") @Override public boolean onNavigationItemSelected(MenuItem item) { // Handle navigation view item clicks here. int id = item.getItemId(); taxi = new Taxi(); fragmentTransaction = getFragmentManager().beginTransaction(); if (id == R.id.nav_home) { } else if (id == R.id.nav_bus) { } else if (id == R.id.nav_funicular) { } else if (id == R.id.nav_minibus) { } else if (id == R.id.nav_subway) { } else if (id == R.id.nav_city_train) { } else if (id == R.id.nav_tram) { } else if (id == R.id.nav_trolleybus) { } else if (id == R.id.nav_taxi) { /*Intent intent = new Intent(Drawer.this, Tax.class); startActivity(intent);*/ fragmentTransaction.replace(R.id.main_frame_layout, taxi); } else if (id == R.id.nav_hotels) { } else if (id == R.id.nav_leisure) { } else if (id == R.id.nav_need_to_know) { } else if (id == R.id.nav_emergencies) { Intent intent = new Intent(Drawer.this, Emergencies.class); startActivity(intent); } DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.closeDrawer(GravityCompat.START); return true; } }

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  • well, at least there is not enough transaction commit ( fragmentTransaction.replace(R.id.main_frame_layout, taxi).commit(); ) - pavlofff

1 answer 1

Whenever you change the FragmentTransaction you must call the commit() method for them to take effect.

In your case, you need to add to fragmentTransaction.replace(R.id.main_frame_layout, taxi); commit() method.

  • Thank you, I was tormented for 3 hours yesterday - Dmitry Binsky