android BottomNavigationView 使用问题

这段时间在做一个高速的手持机项目，在使用Google自带BottomNavigationView时发现了一个，在重写了OnNavigationItemSelectedListener了之后换不了fragment，在网上查询了半天也都是配合ViewPager来使用的，毕竟迷茫，如何不使用ViewPager切换fragment

代码如下:

package com.handset.lane.activity;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.TextView;

import com.google.android.material.bottomnavigation.BottomNavigationView;
import com.handset.lane.R;
import com.handset.lane.base.BaseActivity;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;
import androidx.viewpager.widget.ViewPager;

public class CardInfoActivity extends AppCompatActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_card_info);
        this.getSupportActionBar().hide();
        BottomNavigationView navView = findViewById(R.id.nav_view);
        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
                R.id.navigation_home, R.id.navigation_dashboard)
                .build();
        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
        NavigationUI.setupWithNavController(navView, navController);
        TextView title = findViewById(R.id.tv_title);
        title.setText(R.string.cpc);
        navView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.navigation_home:
                        title.setText(R.string.cpc);
                        return true;

                    case R.id.navigation_dashboard:
                        title.setText(R.string.obu);
                        return true;
                }
                    return false;
            }
        });
    }

}

 

本文地址：https://blog.csdn.net/chengmuzhe2690/article/details/110291005