首先是activity_main.xml文件

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">


    <FrameLayout
        android:id="@+id/homepage"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </FrameLayout>


    <android.support.design.widget.BottomNavigationView
        android:id="@+id/navigation"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="0dp"
        android:layout_marginEnd="0dp"
        android:background="?android:attr/windowBackground"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:menu="@menu/navigation" />

    <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/drawerlayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">


        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">
        </FrameLayout>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:background="#FFF"
            android:text="这是菜单"
            android:textSize="30sp" />

    </android.support.v4.widget.DrawerLayout>

</android.support.constraint.ConstraintLayout>
其中采用BottomNavigationView加fragment实现导航栏的切换，后面还加了侧滑菜单

MainActivity.java的代码如下所示：
package com.example.test1;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private TextView mTextMessage;
    private HomeFragment homeFragment;
    private DashFragment dashFragment;

    private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
            = new BottomNavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
            switch (item.getItemId()) {
                case R.id.navigation_home:
                    replaceFragment(homeFragment);
                    return true;
                case R.id.navigation_dashboard:
                    replaceFragment(dashFragment);
                    return true;
                case R.id.navigation_notifications:
                    //mTextMessage.setText(R.string.title_notifications);
                    return true;
            }
            return false;
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //mTextMessage = (TextView) findViewById(R.id.message);
        BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
        initfragment();
        replaceFragment(homeFragment);
    }

    private void replaceFragment(Fragment fragment){
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.homepage, fragment);
        fragmentTransaction.commit();
    }

    private void initfragment(){
        homeFragment = new HomeFragment();
        dashFragment = new DashFragment();
    }

}

我只设计了两个fragment进行尝试，分别是HomeFragment和DashFragment，分别加载home.xml和dash.xml
home.xml代码如下所示：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/zy"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="HOME"/>

    <TextView
        android:id="@+id/test"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="还没有点击"
        android:textSize="30sp"
        />

</LinearLayout>


HomeFragment.java代码如下所示：
package com.example.test1;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class HomeFragment extends Fragment {

    private Button button;
    private TextView textView;
    private View view;
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        view = inflater.inflate(R.layout.home, container, false);
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        button = (Button) view.findViewById(R.id.zy);
        textView = (TextView) view.findViewById(R.id.test);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                textView.setText("响应点击事件成功");
            }
        });
    }
}

dash.xml的代码如下所示：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <Button
        android:id="@+id/dash"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:text="DASH"/>
</LinearLayout>

DashFragment.java代码如下所示：
package com.example.test1;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class DashFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.dash, container, false);
        return view;
    }
}

目前已经可以通过底部导航栏进行home和dash的切换，但是我在home中的按钮点击事件无响应，想请大佬帮忙看一下问题出在哪里。

刚刚进行了断点调试，textview和button都获得了相应的值，但是button的事件监听就是没有响应