Я прикрепляю фрагмент из фрагмента, который прикреплен к действию, а затем внутри фрагмента я установил свою пользовательскую панель инструментов с параметром setDisplayHomeUpEnabled, равным true. Когда я прикрепляю фрагмент, я установил панель инструментов «Основная активность» скрытой, единственная проблема заключается в том, что он не скрывается при возвращении к родительскому фрагменту из дочернего фрагмента
package manu.apps.cartv6.Activities;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.google.android.material.navigation.NavigationView;
import com.google.android.material.snackbar.Snackbar;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import manu.apps.cartv6.Classes.CartCounterConverter;
import manu.apps.cartv6.Classes.Config;
import manu.apps.cartv6.Classes.Product;
import manu.apps.cartv6.Classes.UserSessionManager;
import manu.apps.cartv6.Fragments.UserProfileFragment;
import manu.apps.cartv6.Fragments.ViewProductsFragment;
import manu.apps.cartv6.Interfaces.AddRemoveCallbacks;
import manu.apps.cartv6.R;
import manu.apps.cartv6.Tests.CartFragment;
public class MainActivity extends AppCompatActivity implements View.OnClickListener, NavigationView.OnNavigationItemSelectedListener, AddRemoveCallbacks {
/** Lists*/
public static List<Product> cartList = new ArrayList<>();
/** Variables*/
// Counter for Cart
public static int cart_count = 0;
// Get Id for users
String getId;
// Time Interval for back button press
private static final int TIME_INTERVAL = 2000; // # milliseconds, desired time passed between two back presses.
// How long the back button has been pressed
private long backPressed;
//Getting Class Info
private static final String TAG = MainActivity.class.getSimpleName();
/** Views*/
// Toolbars
Toolbar toolbar;
// TextViews
TextView navHeaderUsername;
// ImageViews
ImageView navHeaderProfileImage;
/** Session Managing*/
UserSessionManager userSessionManager;
/** Navigation Drawer*/
//Declaring ActionBarDrawerToggle
private ActionBarDrawerToggle actionBarDrawerToggle;
//Declaring Navigation View
NavigationView navigationView;
//Declaring Drawer Layout
DrawerLayout drawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Creating a Session Manager for the Users
userSessionManager = new UserSessionManager(this);
userSessionManager.checkUserLogin();
//Finding Drawer Layout
drawerLayout = findViewById(R.id.drawer_layout);
//Finding Navigation View
navigationView = findViewById(R.id.navigation_view);
//Finding Toolbar
toolbar = findViewById(R.id.main_tool_bar);
//Toolbar Workings
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Home");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// Setting View Products Fragment
Fragment fragment = new ViewProductsFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
//Setting ActionBarDrawerToggle to Open and Close
actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,R.string.open,R.string.close);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
// Setting Navigation Item Selected Listener for Items in Navigation View
navigationView.setNavigationItemSelectedListener(this);
/**
* app:headerLayout="@layout/layout_nav_header"
*
* Remove the above line in NavigationView because we are inflating programmatically
*
* */
View navView = navigationView.inflateHeaderView(R.layout.layout_nav_header);
//Finding Views in Navigation Header which is inside Navigation View
navHeaderUsername = navView.findViewById(R.id.nav_header_username);
navHeaderProfileImage = navView.findViewById(R.id.nav_header_profile_image);
// Parsing Username and Email
HashMap<String, String> user = userSessionManager.getUserDetails();
getId = user.get(userSessionManager.ID);
}
// Fetch User Details
private void fetchUserDetails(){
final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Loading...");
//progressDialog.show();
StringRequest stringRequest = new StringRequest(Request.Method.POST, Config.FETCH_USER_DETAILS,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
progressDialog.dismiss();
Log.i(TAG, response.toString());
try {
JSONObject jsonObject = new JSONObject(response);
String success = jsonObject.getString("success");
JSONArray jsonArray = jsonObject.getJSONArray("fetch");
if (success.equals("1")) {
for (int i = 0; i < jsonArray.length();i++) {
JSONObject object = jsonArray.getJSONObject(i);
String username = object.getString("username").trim();
String email = object.getString("email").trim();
// Set Details for the Navigation Header
navHeaderUsername.setText(username);
//etProfileUsername.setText(username);
//etProfileEmail.setText(email);
}
}
} catch (JSONException e) {
e.printStackTrace();
progressDialog.dismiss();
Toast.makeText(MainActivity.this, "JSON Error fetching Details", Toast.LENGTH_SHORT).show();
Snackbar.make(getWindow().getDecorView().getRootView(),e.toString(),Snackbar.LENGTH_LONG).show();
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
progressDialog.dismiss();
Toast.makeText(MainActivity.this, "Volley Error fetching Details", Toast.LENGTH_SHORT).show();
Snackbar.make(getWindow().getDecorView().getRootView(),error.toString(),Snackbar.LENGTH_LONG).show();
}
})
{
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String > params = new HashMap<>();
params.put("id", getId);
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
public static String numberFormatter(double d) {
DecimalFormat decimalFormat = new DecimalFormat("#,###.##");
return decimalFormat.format(d);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.user_toolbar_menu_items, menu);
MenuItem cartItem = menu.findItem(R.id.cart_action);
cartItem.setIcon(CartCounterConverter.convertLayoutToImage(MainActivity.this,cart_count,R.drawable.view_cart_icon));
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Check if Action Bar Drawer Toggle has been selected
if(actionBarDrawerToggle.onOptionsItemSelected(item)){
return true;
}
switch (item.getItemId()) {
case R.id.cart_action:
//startActivity(new Intent(MainActivity.this,CartActivity.class));
Fragment fragment = new CartFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
getSupportActionBar().hide();
break;
case R.id.logout_action:
userSessionManager.logOutUser();
finish();
default:
break;
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
Fragment fragment = null;
/*switch (item.getItemId()) {
case R.id.action_category_one:
Toast.makeText(this, "Under Development", Toast.LENGTH_SHORT).show();
break;
case R.id.action_profile:
fragment = new UserProfileFragment();
break;
}*/
int id = item.getItemId();
if (id == R.id.action_view_products) {
fragment = new ViewProductsFragment();
}
// else if (id == R.id.action_receipts) {
// }
else if (id == R.id.action_profile) {
//startActivity(new Intent(MainActivity.this,UserProfileActivity.class));
fragment = new UserProfileFragment();
}
if (fragment !=null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
//R.id." " will be found in content_main.xml from the Frame Layout
ft.replace(R.id.frame_layout,fragment);
ft.commit();
}
drawerLayout.closeDrawer(GravityCompat.START);
return true;
}
@Override
public void onClick(View v) {
}
// When back button is pressed method
@Override
public void onBackPressed() {
//Check if navigation drawer is opened or closed
if (drawerLayout.isDrawerOpen(GravityCompat.START)){
drawerLayout.closeDrawer(GravityCompat.START);
}else {
if (backPressed + TIME_INTERVAL > System.currentTimeMillis()) {
super.onBackPressed();
return;
} else {
Toast.makeText(getBaseContext(), "Press back button again to exit", Toast.LENGTH_SHORT).show();
}
backPressed = System.currentTimeMillis();
}
}
@Override
protected void onResume() {
super.onResume();
fetchUserDetails();
}
// Remember to implement AddRemoveCallback Interface
@Override
public void onAddProduct() {
cart_count++;
invalidateOptionsMenu();
}
// Remember to implement AddRemoveCallback Interface
@Override
public void onRemoveProduct() {
cart_count--;
invalidateOptionsMenu();
}
}
Мой дочерний фрагмент
package manu.apps.cartv6.Tests;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import manu.apps.cartv6.Activities.MainActivity;
import manu.apps.cartv6.Fragments.ViewProductsFragment;
import manu.apps.cartv6.R;
/**
* A simple {@link Fragment} subclass.
*/
public class CartFragment extends Fragment {
Toolbar fragmentCartToolbar;
public CartFragment() {
// Required empty public constructor
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//((MainActivity) getActivity()).getSupportActionBar().hide();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
setHasOptionsMenu(true);
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_cart, container, false);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
fragmentCartToolbar = view.findViewById(R.id.fragment_cart_tool_bar);
((MainActivity) getActivity()).setSupportActionBar(fragmentCartToolbar);
((MainActivity) getActivity()).getSupportActionBar().setTitle("Blank Fragment");
((MainActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
((MainActivity) getActivity()).getSupportActionBar().setDisplayShowHomeEnabled(true);
final Toolbar bar = (Toolbar) getActivity().findViewById(R.id.main_tool_bar);
fragmentCartToolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
((MainActivity) getActivity()).setSupportActionBar(bar);
//((MainActivity) getActivity()).getSupportActionBar().show();
Fragment fragment = new ViewProductsFragment();
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
}
});
}
}
Проблема в том, что как только я добавляю setNavigationOnClickListener, главная панель инструментов «Активность» больше не отображается, когда я ее удаляю, она прекрасно показывает
@Override
public void onResume() {
super.onResume();
((MainActivity)getActivity()).getSupportActionBar().hide();
((MainActivity) getActivity()).setSupportActionBar(fragmentCartToolbar);
((MainActivity) getActivity()).getSupportActionBar().setTitle("Blank Fragment");
((MainActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//((MainActivity) getActivity()).getSupportActionBar().setDisplayShowHomeEnabled(true);
fragmentCartToolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Fragment fragment = new ViewProductsFragment();
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
}
});
}