如何解决导航抽屉片段和 tablayout 片段重叠
导航抽屉片段和 tablayout 片段彼此重叠，因为当我们打开导航抽屉片段时，我们也会看到 tablayout 片段的内容，所以我在下面添加了一个屏幕截图，你能帮我解决这个问题吗，我已经提到了 xml下面的文件所以请解决我的问题
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/drawerlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<include layout="@layout/app_bar" />
<com.google.android.material.navigation.NavigationView
android:id="@+id/naviview"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/navi_header"
app:menu="@menu/menu_item" />
</androidx.drawerlayout.widget.DrawerLayout>`
app_bar.xml
`<androidx.coordinatorlayout.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="0dp"
android:theme="@style/AppTheme.AppBarOverlay">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/AppTheme.PopupOverlay" />
<com.google.android.material.tabs.TabLayout
android:id="@+id/tablayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:tabBackground="@color/colorPrimaryDark"
app:tabGravity="fill"
app:tabInlineLabel="true"
app:tabMode="fixed"
app:tabTextColor="@color/white"/>
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager.widget.ViewPager
android:id="@+id/pageviewer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/tablayout"
/>
<FrameLayout
android:id="@+id/framelayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
`
Mainactivity.kt
class MainActivity : AppCompatActivity() {
lateinit var toggle: ActionBarDrawerToggle
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
toolbar()
toggle = ActionBarDrawerToggle(this,drawerlayout,R.string.open,R.string.close)
drawerlayout.addDrawerListener(toggle)
toggle.syncState()
naviview.setNavigationItemSelectedListener {
when (it.itemId) {
R.id.add_book -> {
supportFragmentManager.beginTransaction()
.replace(R.id.framelayout,Addbook())
.addToBackStack("Addbook")
.commit()
supportActionBar?.title = "Addbooks"
drawerlayout.closeDrawers()
}
R.id.add_bookset -> {
supportFragmentManager.beginTransaction()
.replace(R.id.framelayout,Addbooksets())
.addToBackStack("Addbooksets")
.commit()
supportActionBar?.title = "Addbooksets"
drawerlayout.closeDrawers()
}
R.id.add_tools -> {
supportFragmentManager.beginTransaction()
.replace(R.id.framelayout,AddTools())
.addToBackStack("AddTools")
.commit()
supportActionBar?.title = "AddTools"
drawerlayout.closeDrawers()
}
R.id.About_App -> {
supportFragmentManager.beginTransaction()
.replace(R.id.framelayout,Aboutus())
.addToBackStack("Aboutus")
.commit()
supportActionBar?.title = "About us"
drawerlayout.closeDrawers()
}
R.id.contact_us -> {
supportFragmentManager.beginTransaction()
.replace(R.id.framelayout,Contactus())
.addToBackStack("Contactus")
.commit()
supportActionBar?.title = "Contact us"
drawerlayout.closeDrawers()
}
R.id.share_app -> Toast.makeText(this," Share app
selected",Toast.LENGTH_SHORT)
.show()
R.id.logout -> Toast.makeText(this,"Logout selected",Toast.LENGTH_SHORT).show()
}
true
}
setfragments()
}
private fun setfragments() {
val adapter = viewpageadapter(supportFragmentManager)
adapter.addfragment(Books(),"Books")
adapter.addfragment(BookSets(),"BookSets")
adapter.addfragment(Tools(),"Tools")
pageviewer.adapter = adapter
tablayout.setupWithViewPager(pageviewer)
}
fun toolbar() {
var toolbar: Toolbar = findViewById(R.id.toolbar)
setSupportActionBar(toolbar)
supportActionBar?.title="BookQueen"
supportActionBar?.setDisplayHomeAsUpEnabled(true)
supportActionBar?.setDisplayHomeAsUpEnabled(true)
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
if (toggle.onOptionsItemSelected(item)) {
return true
}
return super.onOptionsItemSelected(item)
}
}
viewpageadapter.kt
class viewpageadapter(supportfragmentmanger:FragmentManager):
FragmentPagerAdapter(supportfragmentmanger,BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
private val fragmentlist= ArrayList<Fragment>()
private val fragmenttitlelist= ArrayList<String>()
override fun getItem(position: Int): Fragment {
return fragmentlist[position]
}
override fun getCount(): Int {
return fragmentlist.size
}
override fun getPageTitle(position: Int): CharSequence? {
return fragmenttitlelist[position]
}
fun addfragment(fragment: Fragment,title:String){
fragmentlist.add(fragment)
fragmenttitlelist.add(title)
}
}
解决方法
老实说，我不明白你为什么要写这样的代码。涉及选项卡布局和抽屉的一般模式是让抽屉片段包含选项卡布局及其片段作为子片段。因此，您在这里需要做的是将标签栏布局和视图页面与 app_bar.xml 分开，并将它们写入自己的 xml 中，因为它们应该在自己的片段中。同样在该片段内，将 viewpager 保留在 tablayout 下方，并在选择适当的抽屉选项时替换这个新创建的片段。
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