java - 如何删除主屏幕上的开关？

Question

所以目前我的主屏幕就是这样

![在此处输入图像描述][1]

但是，在我的抽屉导航中，我已经在里面创建了一个开关。因此，我想问是否有任何方法可以确保我拥有的唯一开关是抽屉导航内的开关？

这是我的layout_switch.xml 文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Switch
        android:layout_width="fill_parent"
        android:layout_height="match_parent"
        android:id="@+id/btnSwitch"/>

</LinearLayout>

这是我的drawable_menu 文件

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/signIn"
        android:icon="@drawable/ic_account_circle_black_24dp"
        android:title="Sign In" />
    <item
        android:id="@+id/Mode"
        app:actionLayout="@layout/layout_switch"
        android:icon="@drawable/ic_brightness_4_black_24dp"
        android:title="Dark Mode" />

</menu>

这是我的activity_main 文件

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
    android:id="@+id/drawer"
    tools:context=".MainActivity">

    <include
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        layout="@layout/drawabletoolbar"/>
    <include
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        layout="@layout/content_main"/>



    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
       >


        <Switch
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:id="@+id/btnSwitch"
            android:text=""/>



    </LinearLayout>



    <com.google.android.material.navigation.NavigationView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/navi_view"
        app:menu="@menu/drawable_menu"
        app:headerLayout="@layout/drawable_header"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"/>

这是我的 MainActivity 文件

package sg.edu.rp.c346.app4thnewspd;

import androidx.annotation.RequiresApi;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.app.AppCompatDelegate;
import androidx.core.view.MenuItemCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
import androidx.appcompat.widget.Toolbar;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;

import com.google.android.material.navigation.NavigationView;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import sg.edu.rp.c346.app4thnewspd.Model.Articles;
import sg.edu.rp.c346.app4thnewspd.Model.Headlines;

public class MainActivity extends AppCompatActivity {

    RecyclerView recyclerView;
    SwipeRefreshLayout swipeRefreshLayout;
    EditText etQuery;
    Button btnSearch;
    final String API_KEY = "5353a8d609b4415ab6f449f31d46926a";
    Adapter adapter;
    List<Articles>articles = new ArrayList<>();
    private String query;
    Toolbar toolbar;
    DrawerLayout drawer;
    ActionBarDrawerToggle toggle;
    private Switch btnSwitch;

    public static final String MYPREFERENCES = "nightModePrefs";
    public static final String KEY_ISNIGHTMODE = "isNIghtMode";
    SharedPreferences sharedPreferences;



    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

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


        toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);



        drawer = findViewById(R.id.drawer);
        toggle = new ActionBarDrawerToggle(this,drawer,toolbar,R.string.open,R.string.close);
        drawer.addDrawerListener(toggle);
        toggle.setDrawerIndicatorEnabled(true);
        toggle.syncState();


        swipeRefreshLayout = findViewById(R.id.swipeRefresh);
        recyclerView = findViewById(R.id.recyclerView);

        etQuery = findViewById(R.id.etQuery);
        btnSearch = findViewById(R.id.btnSearch);

        sharedPreferences = getSharedPreferences(MYPREFERENCES, Context.MODE_PRIVATE);
        btnSwitch = findViewById(R.id.btnSwitch);

        checkNightModeActivated();

        btnSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
                    saveNightModeState(true);
                    recreate();
                }else {
                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
                    saveNightModeState(false);
                    recreate();
                }
            }
        });





        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        final String country = getCountry();

        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                retrieveJson("",country,API_KEY);
            }
        });

        retrieveJson("",country, API_KEY);

        btnSearch.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!etQuery.getText().toString().equals("")){
                    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
                        @Override
                        public void onRefresh() {
                            retrieveJson(etQuery.getText().toString(),country,API_KEY);
                        }
                    });
                    retrieveJson(etQuery.getText().toString(),country,API_KEY);
                }else{
                    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
                        @Override
                        public void onRefresh() {
                            retrieveJson("",country,API_KEY);
                        }
                    });
                    retrieveJson("",country,API_KEY);
                }
            }
        });
    }

    private void saveNightModeState(boolean nightMode) {
        SharedPreferences.Editor editor = sharedPreferences.edit();

        editor.putBoolean(KEY_ISNIGHTMODE,nightMode);

        editor.apply();
    }
    public void checkNightModeActivated(){
        if(sharedPreferences.getBoolean(KEY_ISNIGHTMODE, false)){
            btnSwitch.setChecked(true);
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        }else {
            btnSwitch.setChecked(false);
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
    }


    private void restartActivity() {
        Intent i = new Intent(getApplicationContext(),MainActivity.class);
        startActivity(i);
        finish();
    }


    private String getCountry() {
        Locale locale = Locale.getDefault();
        String country = locale.getCountry();
        return country.toLowerCase();
    }




    public void retrieveJson(final String query, final String country, final String apiKey){


        swipeRefreshLayout.setRefreshing(true);
        Call<Headlines>call;
        if(!etQuery.getText().toString().equals("")){
            call = ApiClient.getInstance().getApi().getSpecificData(query,apiKey); 
        }else{
            call = ApiClient.getInstance().getApi().getHeadLines(country, apiKey);
        }
        call.enqueue(new Callback<Headlines>() {
            @Override
            public void onResponse(Call<Headlines> call, Response<Headlines> response) {
                if (response.isSuccessful() && response.body().getArticles() != null){
                    swipeRefreshLayout.setRefreshing(false);
                    articles.clear();
                    articles = response.body().getArticles();
                    adapter = new Adapter(MainActivity.this,articles);
                    recyclerView.setAdapter(adapter);

                }
            }

            @Override
            public void onFailure(Call<Headlines> call, Throwable t) {
                swipeRefreshLayout.setRefreshing(false);
                Toast.makeText(MainActivity.this, t.getLocalizedMessage(), Toast.LENGTH_SHORT).show();
            }
        });
    }
}

这是我的drawable_header文件

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#708090"
    android:orientation="vertical">


    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="157dp"
        android:layout_height="137dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:elevation="6dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/news" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="109dp"
        android:layout_height="108dp"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="500dp"
        android:layout_marginTop="64dp"
        android:layout_marginEnd="68dp"
        android:layout_marginRight="68dp"
        android:text="News"
        android:textColor="@color/white"
        android:textSize="25dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/imageView"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

这是我的drawable_toolbar文件

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#708090"
    android:orientation="vertical">


    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="157dp"
        android:layout_height="137dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:elevation="6dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/news" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="109dp"
        android:layout_height="108dp"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="500dp"
        android:layout_marginTop="64dp"
        android:layout_marginEnd="68dp"
        android:layout_marginRight="68dp"
        android:text="News"
        android:textColor="@color/white"
        android:textSize="25dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/imageView"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

* 已更新 所以显然现在我可以让我的开关在对我的 MainActivity 进行一些调整后能够将其切换到黑暗模式，但是尽管可以工作的开关是您在 ss 中看到的开关，但不是我在其中看到的开关我的抽屉导航。为什么？

这是我更新的 MainActivity

package sg.edu.rp.c346.app4thnewspd;

import androidx.annotation.RequiresApi;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.app.AppCompatDelegate;
import androidx.core.view.MenuItemCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
import androidx.appcompat.widget.Toolbar;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Switch;
import android.widget.Toast;

import com.google.android.material.navigation.NavigationView;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import sg.edu.rp.c346.app4thnewspd.Model.Articles;
import sg.edu.rp.c346.app4thnewspd.Model.Headlines;

public class MainActivity extends AppCompatActivity {

    RecyclerView recyclerView;
    SwipeRefreshLayout swipeRefreshLayout;
    EditText etQuery;
    Button btnSearch;
    final String API_KEY = "5353a8d609b4415ab6f449f31d46926a";
    Adapter adapter;
    List<Articles>articles = new ArrayList<>();
    private String query;
    Toolbar toolbar;
    DrawerLayout drawer;
    ActionBarDrawerToggle toggle;
    private Switch btnSwitch;

    public static final String MYPREFERENCES = "nightModePrefs";
    public static final String KEY_ISNIGHTMODE = "isNIghtMode";
    SharedPreferences sharedPreferences;



    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        if (AppCompatDelegate.getDefaultNightMode()==AppCompatDelegate.MODE_NIGHT_YES){
            setTheme(R.style.DarkTheme);
        }else{
            setTheme(R.style.LightTheme);
        }
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnSwitch = findViewById(R.id.btnSwitch);
        if(AppCompatDelegate.getDefaultNightMode() == AppCompatDelegate.MODE_NIGHT_YES){
            btnSwitch.setChecked(true);
        }
        btnSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked){
                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
                    restartActivity();
                }else{
                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
                    restartActivity();
                }
            }
        });


        toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);



        drawer = findViewById(R.id.drawer);
        toggle = new ActionBarDrawerToggle(this,drawer,toolbar,R.string.open,R.string.close);
        drawer.addDrawerListener(toggle);
        toggle.setDrawerIndicatorEnabled(true);
        toggle.syncState();


        swipeRefreshLayout = findViewById(R.id.swipeRefresh);
        recyclerView = findViewById(R.id.recyclerView);

        etQuery = findViewById(R.id.etQuery);
        btnSearch = findViewById(R.id.btnSearch);



        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        final String country = getCountry();

        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                retrieveJson("",country,API_KEY);
            }
        });

        retrieveJson("",country, API_KEY);

        btnSearch.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!etQuery.getText().toString().equals("")){
                    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
                        @Override
                        public void onRefresh() {
                            retrieveJson(etQuery.getText().toString(),country,API_KEY);
                        }
                    });
                    retrieveJson(etQuery.getText().toString(),country,API_KEY);
                }else{
                    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
                        @Override
                        public void onRefresh() {
                            retrieveJson("",country,API_KEY);
                        }
                    });
                    retrieveJson("",country,API_KEY);
                }
            }
        });
    }

    private void saveNightModeState(boolean nightMode) {
        SharedPreferences.Editor editor = sharedPreferences.edit();

        editor.putBoolean(KEY_ISNIGHTMODE,nightMode);

        editor.apply();
    }
    public void checkNightModeActivated(){
        if(sharedPreferences.getBoolean(KEY_ISNIGHTMODE, false)){
            btnSwitch.setChecked(true);
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        }else {
            btnSwitch.setChecked(false);
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
    }


    private void restartActivity() {
        Intent i = new Intent(getApplicationContext(),MainActivity.class);
        startActivity(i);
        finish();
    }


    private String getCountry() {
        Locale locale = Locale.getDefault();
        String country = locale.getCountry();
        return country.toLowerCase();
    }




    public void retrieveJson(final String query, final String country, final String apiKey){


        swipeRefreshLayout.setRefreshing(true);
        Call<Headlines>call;
        if(!etQuery.getText().toString().equals("")){
            call = ApiClient.getInstance().getApi().getSpecificData(query,apiKey); 
        }else{
            call = ApiClient.getInstance().getApi().getHeadLines(country, apiKey);
        }
        call.enqueue(new Callback<Headlines>() {
            @Override
            public void onResponse(Call<Headlines> call, Response<Headlines> response) {
                if (response.isSuccessful() && response.body().getArticles() != null){
                    swipeRefreshLayout.setRefreshing(false);
                    articles.clear();
                    articles = response.body().getArticles();
                    adapter = new Adapter(MainActivity.this,articles);
                    recyclerView.setAdapter(adapter);

                }
            }

            @Override
            public void onFailure(Call<Headlines> call, Throwable t) {
                swipeRefreshLayout.setRefreshing(false);
                Toast.makeText(MainActivity.this, t.getLocalizedMessage(), Toast.LENGTH_SHORT).show();
            }
        });
    }
}

Answer 1

要解决工具栏新闻重叠问题，请将工具栏 xml 替换为以下代码。如果解决了，也请接受此答案。

<?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">

<androidx.appcompat.widget.Toolbar
    android:id="@+id/toolbar_top"
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:minHeight="?attr/actionBarSize"
    android:background="@color/action_bar_bkgnd"
    app:theme="@style/ToolBarTheme" >


     <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Toolbar Title"
        android:layout_gravity="center"
        android:id="@+id/toolbar_title" />

    </androidx.appcompat.widget.Toolbar>

</LinearLayout>