如何删除主屏幕上的开关？
how do i remove the switch on my home screen?
所以目前我的主屏幕是这样的
![在此处输入图片描述][1]
然而，尽管在我的导航抽屉中，我已经在里面创建了一个开关。因此，我想问一下是否有任何方法可以确保我唯一拥有的开关是我的导航抽屉内的开关？
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 进行一些调整后将其切换到暗模式，但是尽管可以工作的开关是你在 ss 中看到的那个而不是我在我的导航 drawer.Why?
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();
}
});
}
}
首先从 activity_main 布局中移除开关
<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>
然后将此添加到 MainActivity 调整您 need.It 肯定会 work.I 已测试
Menu menu = navigationView.getMenu();
MenuItem menuItem = menu.findItem(R.id.btnSwitch);
View actionView = MenuItemCompat.getActionView(menuItem);
actionView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
要解决工具栏新闻重叠问题，请将工具栏 xml 替换为下面 code.If 已解决，请也接受此答案。
<?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>
所以目前我的主屏幕是这样的
![在此处输入图片描述][1]
然而，尽管在我的导航抽屉中，我已经在里面创建了一个开关。因此，我想问一下是否有任何方法可以确保我唯一拥有的开关是我的导航抽屉内的开关？
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 进行一些调整后将其切换到暗模式，但是尽管可以工作的开关是你在 ss 中看到的那个而不是我在我的导航 drawer.Why?
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();
}
});
}
}
首先从 activity_main 布局中移除开关
<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>
然后将此添加到 MainActivity 调整您 need.It 肯定会 work.I 已测试
Menu menu = navigationView.getMenu();
MenuItem menuItem = menu.findItem(R.id.btnSwitch);
View actionView = MenuItemCompat.getActionView(menuItem);
actionView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
要解决工具栏新闻重叠问题，请将工具栏 xml 替换为下面 code.If 已解决，请也接受此答案。
<?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>