I'；我在导航视图项中遇到问题，请单击androidx中的侦听器_Android_Navigation Drawer_Androidx

I'；我在导航视图项中遇到问题，请单击androidx中的侦听器

android

I'；我在导航视图项中遇到问题，请单击androidx中的侦听器,android,navigation-drawer,androidx,Android,Navigation Drawer,Androidx,实际上，我正在开发一个包含导航视图的应用程序，该应用程序运行在androidx上，我从自己的角度尝试了所有可能的解决方案。实际问题是，即使我对基类实现了NavigationView.OnNavigationItemSelectedListener，onNavigationItemSelected也没有调用实现导航视图的My HomeActivity类。OnNavigationItemSelectedListener是 public class HomeActivity extends AppC

实际上，我正在开发一个包含导航视图的应用程序，该应用程序运行在androidx上，我从自己的角度尝试了所有可能的解决方案。实际问题是，即使我对基类实现了NavigationView.OnNavigationItemSelectedListener，onNavigationItemSelected也没有调用
实现导航视图的My HomeActivity类。OnNavigationItemSelectedListener是

public class HomeActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { private static final String TAG = "checkDate"; ActivityHomeBinding binding; Context context; LinearLayoutManager layoutManager; HomeAdapter adapter; ActionBarDrawerToggle drawerToggle; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_home); context = this; binding = DataBindingUtil.setContentView(this, R.layout.activity_home); Toolbar toolbar = findViewById(R.id.toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setDisplayShowTitleEnabled(false); drawerToggle = new ActionBarDrawerToggle(this, binding.drawer, R.string.open, R.string.close); binding.drawer.addDrawerListener(drawerToggle); drawerToggle.syncState(); drawerToggle.setDrawerIndicatorEnabled(false); drawerToggle.setHomeAsUpIndicator(R.drawable.ic_menu_black_24dp); List<EventDay> events = new ArrayList<>(); Calendar calendar = Calendar.getInstance(); events.add(new EventDay(calendar, R.drawable.ic_event_black_24dp)); binding.homeLayout.calendarView.setEvents(events); binding.homeLayout.calendarView.setOnDayClickListener(eventDay -> { Toast.makeText(context, eventDay.getCalendar().getTime().toString(), Toast.LENGTH_SHORT).show(); Log.d(TAG, "onDayClick: "+Calendar.DAY_OF_MONTH); }); layoutManager = new LinearLayoutManager(this); layoutManager.setOrientation(RecyclerView.VERTICAL); adapter = new HomeAdapter(context); binding.homeLayout.rvEvents.setNestedScrollingEnabled(true); binding.homeLayout.rvEvents.setHasFixedSize(true); binding.homeLayout.rvEvents.setAdapter(adapter); binding.homeLayout.rvEvents.setLayoutManager(layoutManager); binding.navView.setNavigationItemSelectedListener(this); ItemClickSupport.addTo(binding.homeLayout.rvEvents).setOnItemClickListener((recyclerView, position, v) -> { Intent intent = new Intent(context, SiteReachActivity.class); startActivity(intent); }); } @Override public void onBackPressed() { if (binding.drawer.isDrawerOpen(GravityCompat.START)){ binding.drawer.closeDrawer(GravityCompat.START); return; } super.onBackPressed(); } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == android.R.id.home){ binding.drawer.openDrawer(GravityCompat.START); } return true; } @Override public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) { int id = menuItem.getItemId(); Intent intent; switch (id){ case R.id.menu_profile: intent = new Intent(context, ProfileActivity.class); startActivity(intent); break; case R.id.menu_dashboard: break; case R.id.menu_history: intent = new Intent(context, HistoryActivity.class); startActivity(intent); break; case R.id.menu_TADA: break; case R.id.menu_logOut: break; } return true; } }

<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/menu_profile" android:icon="@drawable/user" android:title="@string/user"/> <item android:id="@+id/menu_dashboard" android:icon="@drawable/home" android:title="Dashboard"/> <item android:id="@+id/menu_history" android:icon="@drawable/history" android:title="History"/> <item android:id="@+id/menu_TADA" android:icon="@drawable/wallet" android:title="TADA"/> <item android:id="@+id/menu_logOut" android:icon="@drawable/ic_power_settings_new_black_24dp" android:title="Logout"/> </menu>

公共类HomeActivity扩展AppCompatActivity实现NavigationView.OnNavigationItemSelectedListener{ 私有静态最终字符串TAG=“checkDate”；活动家庭绑定；语境；直线布局经理布局经理；家庭适配器； ActionBarDrawerToggle抽屉切换； @凌驾创建时受保护的void（Bundle savedInstanceState）{ super.onCreate（savedInstanceState）； setContentView（R.layout.activity_home）；上下文=这个； binding=DataBindingUtil.setContentView（this，R.layout.activity\u home）； Toolbar Toolbar=findviewbyd（R.id.Toolbar）；设置支持操作栏（工具栏）； getSupportActionBar（）.setDisplayHomeAsUpEnabled（true）； getSupportActionBar（）.setDisplayShowTitleEnabled（false）； drawerToggle=newactionbardrawertoggle（this，binding.drawer，R.string.open，R.string.close）；装订.出票人.添加出票人链接（出票人切换）； drawerToggle.syncState（）；抽屉切换。设置抽屉指示可启用（false）；抽屉切换。设置HomeAsupIndicator（R.drawable.ic_菜单_黑色_24dp）；列表事件=新建ArrayList（）；日历=Calendar.getInstance（）；添加（新的EventDay（日历，R.drawable.ic_event_black_24dp））； binding.homeLayout.calendarView.setEvents（事件）； binding.homeLayout.calendarView.setOnDayClickListener（eventDay->{ Toast.makeText（上下文，eventDay.getCalendar（）.getTime（）.toString（），Toast.LENGTH_SHORT）.show（）； Log.d（标记为“onDayClick:+日历日/月日”）； }); layoutManager=新的LinearLayoutManager（此）； layoutManager.setOrientation（RecyclerView.VERTICAL）；适配器=新的家庭适配器（上下文）； binding.homeLayout.rvEvents.setNestedScrollingEnabled（true）； binding.homeLayout.rvEvents.setHasFixedSize（true）； binding.homelograyout.rvEvents.setAdapter（适配器）； binding.homeLayout.rvEvents.setLayoutManager（layoutManager）； binding.navView.setNavigationItemSelectedListener（此）； ItemClickSupport.addTo（binding.homeLayout.rvEvents）.setOnItemClickListener（（recyclerView，position，v）->{ 意向意向=新意向（上下文、SiteReachActivity.class）；星触觉（意向）； }); } @凌驾 public void onBackPressed（）{ if（binding.drawer.isDrawerOpen（GravityCompat.START））{ 装订.drawer.closeDrawer（GravityCompat.START）；返回； } super.onBackPressed（）； } @凌驾公共布尔值onOptionsItemSelected（菜单项项）{ int id=item.getItemId（）； if（id==android.R.id.home）{ binding.drawer.openDrawer（GravityCompat.START）； } 返回true； } @凌驾公共布尔值onNavigationItemSelected（@NonNull MenuItem MenuItem）{ int id=menuItem.getItemId（）；意图；开关（id）{ 案例R.id.menu\U配置文件：意图=新意图（上下文，ProfileActivity.class）；星触觉（意向）；打破案例R.id.菜单\仪表板：打破案例R.id.menu\U历史记录： intent=新的intent（context，HistoryActivity.class）；星触觉（意向）；打破案例R.id.menu_TADA：打破案例R.id.菜单\注销：打破 } 返回true； } }
布局文件是

<?xml version="1.0" encoding="utf-8"?> <layout 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"> <androidx.drawerlayout.widget.DrawerLayout android:id="@+id/drawer" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" tools:openDrawer="start"> <com.google.android.material.navigation.NavigationView android:id="@+id/nav_view" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_gravity="start" android:fitsSystemWindows="true" android:background="@color/white" app:headerLayout="@layout/nav_header_main" app:itemIconTint="@color/colorPrimary" app:menu="@menu/activity_main_drawer"/> <include android:id="@+id/home_layout" layout="@layout/home_layout" android:layout_width="match_parent" android:layout_height="match_parent"/> </androidx.drawerlayout.widget.DrawerLayout> </layout>

活动主抽屉的布局文件是

public class HomeActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { private static final String TAG = "checkDate"; ActivityHomeBinding binding; Context context; LinearLayoutManager layoutManager; HomeAdapter adapter; ActionBarDrawerToggle drawerToggle; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_home); context = this; binding = DataBindingUtil.setContentView(this, R.layout.activity_home); Toolbar toolbar = findViewById(R.id.toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setDisplayShowTitleEnabled(false); drawerToggle = new ActionBarDrawerToggle(this, binding.drawer, R.string.open, R.string.close); binding.drawer.addDrawerListener(drawerToggle); drawerToggle.syncState(); drawerToggle.setDrawerIndicatorEnabled(false); drawerToggle.setHomeAsUpIndicator(R.drawable.ic_menu_black_24dp); List<EventDay> events = new ArrayList<>(); Calendar calendar = Calendar.getInstance(); events.add(new EventDay(calendar, R.drawable.ic_event_black_24dp)); binding.homeLayout.calendarView.setEvents(events); binding.homeLayout.calendarView.setOnDayClickListener(eventDay -> { Toast.makeText(context, eventDay.getCalendar().getTime().toString(), Toast.LENGTH_SHORT).show(); Log.d(TAG, "onDayClick: "+Calendar.DAY_OF_MONTH); }); layoutManager = new LinearLayoutManager(this); layoutManager.setOrientation(RecyclerView.VERTICAL); adapter = new HomeAdapter(context); binding.homeLayout.rvEvents.setNestedScrollingEnabled(true); binding.homeLayout.rvEvents.setHasFixedSize(true); binding.homeLayout.rvEvents.setAdapter(adapter); binding.homeLayout.rvEvents.setLayoutManager(layoutManager); binding.navView.setNavigationItemSelectedListener(this); ItemClickSupport.addTo(binding.homeLayout.rvEvents).setOnItemClickListener((recyclerView, position, v) -> { Intent intent = new Intent(context, SiteReachActivity.class); startActivity(intent); }); } @Override public void onBackPressed() { if (binding.drawer.isDrawerOpen(GravityCompat.START)){ binding.drawer.closeDrawer(GravityCompat.START); return; } super.onBackPressed(); } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == android.R.id.home){ binding.drawer.openDrawer(GravityCompat.START); } return true; } @Override public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) { int id = menuItem.getItemId(); Intent intent; switch (id){ case R.id.menu_profile: intent = new Intent(context, ProfileActivity.class); startActivity(intent); break; case R.id.menu_dashboard: break; case R.id.menu_history: intent = new Intent(context, HistoryActivity.class); startActivity(intent); break; case R.id.menu_TADA: break; case R.id.menu_logOut: break; } return true; } }

<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/menu_profile" android:icon="@drawable/user" android:title="@string/user"/> <item android:id="@+id/menu_dashboard" android:icon="@drawable/home" android:title="Dashboard"/> <item android:id="@+id/menu_history" android:icon="@drawable/history" android:title="History"/> <item android:id="@+id/menu_TADA" android:icon="@drawable/wallet" android:title="TADA"/> <item android:id="@+id/menu_logOut" android:icon="@drawable/ic_power_settings_new_black_24dp" android:title="Logout"/> </menu>

如果还需要什么，请发表评论TIA
如果您使用的是androidX，那么您必须使用NavController进行片段导航
我将发布我尝试过的代码

public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { NavController mNavController; Navigation mNavigation; BottomNavigationView mBottomNavigationView; NavigationView mNavigationView; DrawerLayout mDrawerLayout; Toolbar toolbar; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); toolbar = findViewById(R.id.toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setDisplayShowHomeEnabled(true); getSupportActionBar().setDisplayShowTitleEnabled(false); mDrawerLayout = findViewById(R.id.drawer_layout); mBottomNavigationView = findViewById(R.id.bottom_navigation_view); mNavigationView = findViewById(R.id.navigation_view); //mNavController = Navigation.findNavController(this,R.id.host_fragment); mNavController = Navigation.findNavController(this,R.id.host_fragment); NavigationUI.setupWithNavController(mBottomNavigationView,Navigation.findNavController(this,R.id.host_fragment)); NavigationUI.setupActionBarWithNavController(this, mNavController, mDrawerLayout); NavigationUI.setupWithNavController(mNavigationView,mNavController); mNavigationView.setNavigationItemSelectedListener(this); //NavigationUI.setupActionBarWithNavController(this,Navigation.findNavController(this,R.id.host_fragment)); } @Override public boolean onSupportNavigateUp() { /*return mNavController.popBackStack(R.id.host_fragment,false);*/ return NavigationUI.navigateUp(Navigation.findNavController(this, R.id.host_fragment), mDrawerLayout); } @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN) @Override public void onBackPressed() { NavController navController = Navigation.findNavController(this, R.id.host_fragment); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { if (Objects.requireNonNull(navController.getCurrentDestination()).getId() == R.id.nav_first) { finishAffinity(); } else { mNavController.popBackStack(R.id.nav_first, false); } } } @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN) @Override public boolean onOptionsItemSelected(@NonNull MenuItem item) { switch (item.getItemId()){ case R.id.home: onBackPressed(); } return super.onOptionsItemSelected(item); } @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN) @Override public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) { mDrawerLayout.closeDrawers(); int id = menuItem.getItemId(); switch (id){ //Nav drawer items case R.id.profile: mNavController.navigate(R.id.profile); break; case R.id.features: mNavController.navigate(R.id.features); break; case R.id.signOut: finishAffinity(); break; } return true; }
}
您需要有主机片段，您需要在活动布局中实现片段，在活动布局中实现导航
activity_main.xml

<?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:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent"> <androidx.constraintlayout.widget.ConstraintLayout android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <androidx.appcompat.widget.Toolbar android:id="@+id/toolbar" android:layout_width="0dp" android:layout_height="?attr/actionBarSize" android:background="@android:color/white" android:minHeight="?attr/actionBarSize" android:theme="?attr/actionBarTheme" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:weightSum="10"> <androidx.appcompat.widget.AppCompatTextView android:id="@+id/toolbar_title" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="8" android:gravity="center" android:padding="10dp" android:text="@string/jetpack_example" android:textColor="#000" android:textSize="15sp" /> <ImageView android:id="@+id/search_bar" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="2" android:padding="10dp" android:src="@drawable/about_icon" /> </LinearLayout> </androidx.appcompat.widget.Toolbar> <com.google.android.material.bottomnavigation.BottomNavigationView android:id="@+id/bottom_navigation_view" android:layout_width="match_parent" android:layout_height="wrap_content" app:itemBackground="@android:color/white" app:labelVisibilityMode="selected" app:layout_constraintBottom_toBottomOf="@+id/host_fragment" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:menu="@menu/menu_drawer" /> <fragment android:id="@+id/host_fragment" android:name="androidx.navigation.fragment.NavHostFragment" android:layout_width="match_parent" android:layout_height="match_parent" app:defaultNavHost="true" app:navGraph="@navigation/navigation_graph" tools:layout_editor_absoluteX="0dp" tools:layout_editor_absoluteY="0dp" /> </androidx.constraintlayout.widget.ConstraintLayout> <com.google.android.material.navigation.NavigationView android:id="@+id/navigation_view" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="start" app:menu="@menu/nav_drawer" /> </androidx.drawerlayout.widget.DrawerLayout>

接下来，您需要为导航创建导航图并使用参数。您还可以实现操作。创建一个导航文件夹，并在单击特定项目时实现下面的实现片段
导航图.xml

<?xml version="1.0" encoding="utf-8"?> <navigation 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/navigation_graph" app:startDestination="@id/nav_first"> <fragment android:id="@+id/nav_first" android:name="com.escapadetechnologies.jetpacknavigationexample.Fragments.FirstFragment" android:label="@string/first" tools:layout="@layout/fragment_first" /> <fragment android:id="@+id/nav_second" android:name="com.escapadetechnologies.jetpacknavigationexample.Fragments.SecondFragment" android:label="@string/second" tools:layout="@layout/fragment_second" /> <fragment android:id="@+id/nav_third" android:name="com.escapadetechnologies.jetpacknavigationexample.Fragments.ThirdFragment" android:label="@string/third" tools:layout="@layout/fragment_third" /> <fragment android:id="@+id/nav_fourth" android:name="com.escapadetechnologies.jetpacknavigationexample.Fragments.FourthFragment" android:label="@string/fourth" tools:layout="@layout/fragment_fourth" /> <fragment android:id="@+id/profile" android:name="com.escapadetechnologies.jetpacknavigationexample.Fragments.ProfileFragment" android:label="@string/profile" tools:layout="@layout/fragment_profile" /> <fragment android:id="@+id/features" android:name="com.escapadetechnologies.jetpacknavigationexample.Fragments.FeaturesFragment" android:label="@string/features" tools:layout="@layout/fragment_features" />

它非常方便，使用androidx可以避免很多样板代码。如果您有任何疑问，可以对我的答案发表评论。
如果可能，除了developers.android.com网站之外，你能通过片段与我分享任何教程链接或任何与NavController相关的信息吗？你知道我应该在哪里创建导航主机片段吗？我没有conent_主布局？我将添加你可以通过@Arunsriramula工作的全部代码如果你仍然有问题，我可以给我的github您可以使用@ArunSriramulaGitHub链接进行训练，这将非常棒。