全屏显示时，BottomNavigationView跳起来留下空白

问题描述

对于BottomNavigationView的最后一个标签，我希望内容位于状态栏下方，并使状态栏完全透明。这可以按预期工作，但是当选择了最后一个选项卡时，BottomNavigationView会跳起来，在底部留下一个空格。

SO中有类似的话题，据说将fitWindowSystems设置为false。我尝试过，但没有帮助。感谢您的帮助。

ExplorerFragment.java

 来解决此问题pre> 
 
到我片段的 onActivityCreated 方法中。 
 视图-片段的根视图
 
 
在我看来，是这样的：
 
 
科特琳
 替代乐趣onActivityCreated（savedInstanceState：Bundle？）{
 super.onActivityCreated（savedInstanceState）
视图？.let {
 ViewCompat.requestApplyInsets（it）
} 
} 
  
 JAVA 
  @Override 
 public void onActivityCreated（Bundle savedInstanceState）{
 super.onActivityCreated（savedInstanceState）; 
 View view = getView（）
 if（view！= null）{
 ViewCompat.requestApplyInsets（view）
} 
} 
  
 更新（6/27/2020）： 
自 onActivityCreated 方法已在SDK> = 29上弃用，您可以在 onViewCreated 方法内使用上面的代码：
  override fun onViewCreated（view：View，savedInstanceState：Bundle？）{
 super.onViewCreated（view，savedInstanceState）
 ViewCompat.requestApplyInsets（view）
} 
  
 
For a BottomNavigationView's last tab, I want the content to be below status bar and make the status bar completely transparent. This works as expected but the BottomNavigationView jumps up leaving a blank space in the bottom when the last tab is selected. 
There were similar topics in SO that said to set fitWindowSystems to false. I tried it, but not helping. Any help is appreciated.
ExplorerFragment.java
public class ExplorerFragment extends Fragment {

    public ExplorerFragment() {
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            Window window = getActivity().getWindow();
            window.getDecorView().setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
                            View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            | View.SYSTEM_UI_FLAG_IMMERSIVE);
            window.setStatusBarColor(ContextCompat.getColor(getContext(), android.R.color.transparent));
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            View decor = getActivity().getWindow().getDecorView();
            decor.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
        }
    }

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        return inflater.inflate(R.layout.fragment_explorer, container, false);
    }

}
fragment_explorer.xml
<android.support.constraint.ConstraintLayout
        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="com.orevon.fflok.fragments.ExplorerFragment"
        android:fitsSystemWindows="false">

    <View android:layout_width="0dp" android:layout_height="180dp"
          app:layout_constraintTop_toTopOf="parent"
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintEnd_toEndOf="parent"
          android:background="@drawable/splash_background4"/>

</android.support.constraint.ConstraintLayout>
activity_mail.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/main_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="false">

    <FrameLayout
            android:id="@+id/fragment_frame"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior">

    </FrameLayout>

    <android.support.design.widget.BottomNavigationView
            android:id="@+id/mainBottomNavigation"
            android:layout_width="match_parent"
            android:layout_height="68dp"
            app:layout_constraintStart_toStartOf="parent" app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"
            android:background="@drawable/bottombar_bg"
            app:itemIconTint="@color/bottom_nav_color"
            app:itemTextColor="@color/bottom_nav_color"
            app:menu="@menu/main_bottom_navigation"/>

</android.support.constraint.ConstraintLayout>
 解决方案 
It may be useful for those who face a problem in the future.I solved this issue just by adding
ViewCompat.requestApplyInsets(view)
to my fragment's onActivityCreated method.view - fragment's root view
in my case it looks like:
KOTLIN
    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        view?.let {
            ViewCompat.requestApplyInsets(it)
        }
    }
JAVA
 @Override
    public void onActivityCreated(Bundle savedInstanceState) {
            super.onActivityCreated(savedInstanceState);
            View view = getView()
            if(view != null){
                ViewCompat.requestApplyInsets(view)
            }
        }
Update (6/27/2020):Since onActivityCreated method is deprecated on SDK >=29 you could use the code above inside onViewCreated method:
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    ViewCompat.requestApplyInsets(view)
}
                        
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