package com.example.myapplication.ui; import android.content.Intent; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import androidx.annotation.NonNull; import androidx.appcompat.widget.Toolbar; import androidx.drawerlayout.widget.DrawerLayout; import androidx.fragment.app.FragmentManager; import androidx.fragment.app.FragmentTransaction; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import com.example.myapplication.R; import com.example.myapplication.ui.list.PullToRefreshFragment; import com.example.myapplication.ui.slideshow.SlideshowFragment; import com.google.android.material.navigation.NavigationView; public class MainActivity extends BaseActivity { private AppBarConfiguration mAppBarConfiguration; FragmentManager fragmentManager; FragmentTransaction fragmentTransaction; PullToRefreshFragment pullToRefreshFragment; SlideshowFragment slideshowFragment; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); 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) { Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) .setAction("Action", null).show(); } });*/ DrawerLayout drawer = findViewById(R.id.drawer_layout); NavigationView navigationView = findViewById(R.id.nav_view); // Passing each menu ID as a set of Ids because each // menu should be considered as top level destinations. mAppBarConfiguration = new AppBarConfiguration.Builder( R.id.nav_pullToRefresh, R.id.nav_slideshow, R.id.nav_slideshow, R.id.nav_tools, R.id.nav_jzvd, R.id.nav_send) .setDrawerLayout(drawer) .build(); NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment); NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration); NavigationUI.setupWithNavController(navigationView, navController); fragmentManager = getSupportFragmentManager(); pullToRefreshFragment = new PullToRefreshFragment(); slideshowFragment = new SlideshowFragment(); navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) { switch (menuItem.getItemId()) { case R.id.nav_pullToRefresh: fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.replace(R.id.nav_host_fragment, pullToRefreshFragment).commit(); break; case R.id.nav_LRecyclerView: startActivity(new Intent(MainActivity.this, com.lzx.demo.MainActivity.class)); break; case R.id.nav_slideshow: fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.replace(R.id.nav_host_fragment, slideshowFragment).commit(); break; } return false; } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onSupportNavigateUp() { NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment); return NavigationUI.navigateUp(navController, mAppBarConfiguration) || super.onSupportNavigateUp(); } }