登录后如何设置底部导航栏

时间:2020-09-08 21:24:26

标签: android user-interface kotlin android-fragments android-bottomnav

我正在使用一个使用许多片段的Activity,但是我不知道如何设置2个navHostFragments: 带有底部导航栏的主机片段只能在nav_login目的地中显示

我正在使用数据绑定和导航组件:

这是我的代码和结构:

  1. 单个MainActivity(main_activity.xml仅具有navHostFragment)
  2. 登录片段(在navigation.xml上)
  3. RegisterFragment(在navigation.xml上)

发生我的头痛时:(辅助导航图和navHostFragment(位于hostFragment上),nav_login.xml:

<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_login"
    app:startDestination="@id/mainFragment">

    <fragment
        android:id="@+id/expensesFragment"
        android:name="com.abner.syncittechnologies.expenses.ExpensesFragment"
        android:label="expenses_fragment"
        tools:layout="@layout/expenses_fragment" />
    <fragment
        android:id="@+id/mainFragment"
        android:name="com.abner.syncittechnologies.main.MainFragment"
        android:label="main_fragment"
        tools:layout="@layout/main_fragment" />
    <fragment
        android:id="@+id/incomesFragment"
        android:name="com.abner.syncittechnologies.incomes.IncomesFragment"
        android:label="incomes_fragment"
        tools:layout="@layout/incomes_fragment" />
</navigation>

我的hostFragment(我的辅助navHostFragment和底部导航栏在哪里):

<androidx.constraintlayout.widget.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/fragment2"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navGraph="@navigation/nav_login" />

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/bottom_navigation"
        style="@style/Widget.Design.BottomNavigationView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:menu="@menu/nav_drawer" />
</androidx.constraintlayout.widget.ConstraintLayout>

我的菜单项是:

<item
android:id="@+id/mainFragment"
android:enabled="true"
android:icon="@drawable/ic_home_nav"
android:title="Inicio"
app:itemIconTint="?attr/colorOnSurface"/>
<item
android:id="@+id/incomesFragment"
android:enabled="true"
android:icon="@drawable/ic_app_concept"
android:title="Control"/>
<item
android:id="@+id/expensesFragment"
android:enabled="true"
android:icon="@drawable/ic_app_concept"
android:title="Inventario"/>

并且我正在HostFragment上使用以下代码:

binding.bottomNavigation.setupWithNavController(this.findNavController())

编译并显示导航底部栏和主要片段,但导航栏不起作用

和我的导航图捕获

stroke-linecapnavigation

0 个答案:

没有答案
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