![](/img/trans.png)
[英]Navigation Drawer and Bottom Navigation menu category dependency - Navigation Architecture Component
[英]How to use Navigation Drawer and Bottom Navigation simultaneously - Navigation Architecture Component
我有如下屏幕,其中在同一屏幕上包含導航抽屜和底部導航:
我正在使用 Jetpack 導航架構組件。
當前問題和我嘗試了什么?
單擊第二個和第三個底部導航項會在工具欄上顯示后退箭頭嗎?
嘗試過:將與第二和第三底部導航相關的片段設置為頂級目的地
appBarConfig = AppBarConfiguration(setOf(R.layout.fragment_star, R.layout.fragment_stats, R.layout.fragment_user))
代替
appBarConfig = AppBarConfiguration(navController.graph, drawerLayout)
沒有工作。
任何幫助高度贊賞!
我的代碼如下所示。
活動_main.xml
<?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">
<androidx.drawerlayout.widget.DrawerLayout
android:id="@+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<fragment
android:id="@+id/navHostFragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
app:defaultNavHost="true"
app:navGraph="@navigation/nav_graph" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottomNav"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
app:menu="@menu/menu_bottom" />
</LinearLayout>
<!-- gives navDrawer material look-->
<com.google.android.material.navigation.NavigationView
android:id="@+id/navView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="@menu/nav_drawer_menu"
app:headerLayout="@layout/nav_header"
android:fitsSystemWindows="true"
/>
</androidx.drawerlayout.widget.DrawerLayout>
</layout>
menu_bottom.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/starFragment"
android:icon="@drawable/ic_star_green_48dp"
android:title="@string/bottom_nav_title_star"/>
<item
android:id="@+id/statsFragment"
android:icon="@drawable/ic_stats_green_48dp"
android:title="@string/bottom_nav_title_stats"/>
<item
android:id="@+id/userFragment"
android:icon="@drawable/ic_user_green_48dp"
android:title="@string/bottom_nav_title_user"/>
</menu>
導航圖.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/nav_graph_main"
app:startDestination="@id/starFragment">
<fragment
android:id="@+id/starFragment"
android:name="com.example.app.ui.StarrFragment"
android:label="Star"
tools:layout="@layout/fragment_star">
</fragment>
<fragment
android:id="@+id/statsFragment"
android:name="com.example.app.StatsFragment"
android:label="fragment_stats"
tools:layout="@layout/fragment_stats" />
<fragment
android:id="@+id/userFragment"
android:name="com.example.app.UserFragment"
android:label="fragment_user"
tools:layout="@layout/fragment_user" />
</navigation>
ActivityMain.kt
class MainActivity : AppCompatActivity() {
private lateinit var drawerLayout: DrawerLayout
private lateinit var appBarConfig: AppBarConfiguration
private lateinit var navController: NavController
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val binding = DataBindingUtil.setContentView<ActivityMainBinding>(this, R.layout.activity_main)
setSupportActionBar(toolbar)
drawerLayout = binding.drawerLayout
navController = this.findNavController(R.id.navHostFragment)
binding.bottomNav.setupWithNavController(navController)
NavigationUI.setupActionBarWithNavController(this, navController, drawerLayout)
appBarConfig = AppBarConfiguration(navController.graph, drawerLayout)
// lock drawer when not in start destination
navController.addOnDestinationChangedListener { nc, nd, _ ->
if(nd.id == nc.graph.startDestination){
drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED)
}
else{
drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
}
}
NavigationUI.setupWithNavController(binding.navView, navController)
}
override fun onSupportNavigateUp(): Boolean {
// replace navigation up button with nav drawer button when on start destination
return NavigationUI.navigateUp(navController, appBarConfig)
}
}
無需編寫單獨的代碼來用抽屜圖標替換后退按鈕。
在 AppBarConfiguration 中傳遞片段 ID(來自 nav_graph),您使用它從底部導航和導航抽屜導航。 ( PS片段及其相關圖標應具有相同的 ID )
對於您的情況,AppBarConfiguration 應如下所示:
appBarConfig = AppBarConfiguration.Builder(R.id.starFragment, R.id.statsFragment, R.id.userFragment)
.setDrawerLayout(drawerLayout)
.build()
設置操作欄:
setSupportActionBar(toolbar)
setupActionBarWithNavController(navController, appBarConfig)
現在為底部導航和導航視圖設置導航控制器:
navView.setupWithNavController(navController)
bottomNav.setupWithNavController(navController)
onSupportNavigateUp 函數應該是:
override fun onSupportNavigateUp(): Boolean {
return navController.navigateUp(appBarConfig)
}
如果抽屜打開,則應處理后退按鈕按下:
override fun onBackPressed() {
if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START)
} else {
super.onBackPressed()
}
}
獎金
默認情況下,當您依次單擊 icon_1、icon_2 和 icon_3 順序中的底部導航圖標時,然后按后退按鈕,它將導航回到圖標_1 的主頁圖標
如果您想以與單擊圖標相反的順序(返回堆棧方式)向后導航,則將android:menuCategory="secondary" 添加到菜單中的項目。 所以你的菜單會是這樣的:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/starFragment"
android:icon="@drawable/ic_star_green_48dp"
android:title="@string/bottom_nav_title_star"
android:menuCategory="secondary"/>
<item
android:id="@+id/statsFragment"
android:icon="@drawable/ic_stats_green_48dp"
android:title="@string/bottom_nav_title_stats"
android:menuCategory="secondary"/>
<item
android:id="@+id/userFragment"
android:icon="@drawable/ic_user_green_48dp"
android:title="@string/bottom_nav_title_user"
android:menuCategory="secondary"/>
</menu>
希望現在可以解決后退按鈕圖標:)
我有如下屏幕,其中在同一屏幕上包含一個導航抽屜和底部導航:
我正在使用Jetpack導航體系結構組件。
當前問題和我嘗試了什么?
單擊第二個和第三個底部導航項在工具欄上顯示后退箭頭?
嘗試過:將與第二個和第三個底部導航相關的片段設置為頂級目的地
appBarConfig = AppBarConfiguration(setOf(R.layout.fragment_star, R.layout.fragment_stats, R.layout.fragment_user))
代替
appBarConfig = AppBarConfiguration(navController.graph, drawerLayout)
沒有工作。
任何幫助,高度贊賞!
我的代碼如下所示。
activity_main.xml
<?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">
<androidx.drawerlayout.widget.DrawerLayout
android:id="@+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<fragment
android:id="@+id/navHostFragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
app:defaultNavHost="true"
app:navGraph="@navigation/nav_graph" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottomNav"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
app:menu="@menu/menu_bottom" />
</LinearLayout>
<!-- gives navDrawer material look-->
<com.google.android.material.navigation.NavigationView
android:id="@+id/navView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="@menu/nav_drawer_menu"
app:headerLayout="@layout/nav_header"
android:fitsSystemWindows="true"
/>
</androidx.drawerlayout.widget.DrawerLayout>
</layout>
menu_bottom.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/starFragment"
android:icon="@drawable/ic_star_green_48dp"
android:title="@string/bottom_nav_title_star"/>
<item
android:id="@+id/statsFragment"
android:icon="@drawable/ic_stats_green_48dp"
android:title="@string/bottom_nav_title_stats"/>
<item
android:id="@+id/userFragment"
android:icon="@drawable/ic_user_green_48dp"
android:title="@string/bottom_nav_title_user"/>
</menu>
nav_graph.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/nav_graph_main"
app:startDestination="@id/starFragment">
<fragment
android:id="@+id/starFragment"
android:name="com.example.app.ui.StarrFragment"
android:label="Star"
tools:layout="@layout/fragment_star">
</fragment>
<fragment
android:id="@+id/statsFragment"
android:name="com.example.app.StatsFragment"
android:label="fragment_stats"
tools:layout="@layout/fragment_stats" />
<fragment
android:id="@+id/userFragment"
android:name="com.example.app.UserFragment"
android:label="fragment_user"
tools:layout="@layout/fragment_user" />
</navigation>
ActivityMain.kt
class MainActivity : AppCompatActivity() {
private lateinit var drawerLayout: DrawerLayout
private lateinit var appBarConfig: AppBarConfiguration
private lateinit var navController: NavController
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val binding = DataBindingUtil.setContentView<ActivityMainBinding>(this, R.layout.activity_main)
setSupportActionBar(toolbar)
drawerLayout = binding.drawerLayout
navController = this.findNavController(R.id.navHostFragment)
binding.bottomNav.setupWithNavController(navController)
NavigationUI.setupActionBarWithNavController(this, navController, drawerLayout)
appBarConfig = AppBarConfiguration(navController.graph, drawerLayout)
// lock drawer when not in start destination
navController.addOnDestinationChangedListener { nc, nd, _ ->
if(nd.id == nc.graph.startDestination){
drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED)
}
else{
drawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED)
}
}
NavigationUI.setupWithNavController(binding.navView, navController)
}
override fun onSupportNavigateUp(): Boolean {
// replace navigation up button with nav drawer button when on start destination
return NavigationUI.navigateUp(navController, appBarConfig)
}
}
在Google Codelab導航項目中,它們執行了Adithya T Raj提到的操作,但僅用於在橫向上顯示DrawerLayout,在縱向上顯示BottomNavigationView。 項目鏈接: https : //github.com/googlecodelabs/android-navigation
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.