package com.tkurimura.flickabledialog.sample; import android.os.Bundle; import android.support.design.widget.NavigationView; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; 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.MenuItem; import com.sample.R; public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); 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); navigationView.setCheckedItem(R.id.nav_mail); setDefaultFragment(); } @Override public boolean onNavigationItemSelected(MenuItem item) { FragmentManager fragmentManager = getSupportFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); switch (item.getItemId()) { case R.id.nav_mail: fragmentTransaction.replace(R.id.tab_content_container, new CreateMailFragment()); fragmentTransaction.commit(); setTitle(item.getTitle()); break; case R.id.nav_review: fragmentTransaction.replace(R.id.tab_content_container, new ReviewAppealFragment()); fragmentTransaction.commit(); setTitle(item.getTitle()); break; case R.id.nav_premium: fragmentTransaction.replace(R.id.tab_content_container, new PremiumAppealFragment()); fragmentTransaction.commit(); setTitle(item.getTitle()); break; case R.id.nav_profile: fragmentTransaction.replace(R.id.tab_content_container, new ProfileTutorialFragment()); fragmentTransaction.commit(); setTitle(item.getTitle()); break; } DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.closeDrawer(GravityCompat.START); return true; } private void setDefaultFragment(){ FragmentManager fragmentManager = getSupportFragmentManager(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.replace(R.id.tab_content_container, new CreateMailFragment()); fragmentTransaction.commit(); } }