全屏时 BottomNavigationView 跳起来留空 space

Question

对于BottomNavigationView的最后一个tab，我希望内容在状态栏下方，并且状态栏完全透明。这按预期工作，但 BottomNavigationView 跳起来，在选择最后一个选项卡时在底部留下空白 space。

SO 中有类似的主题说要将 fitWindowSystems 设置为 false。我试过了，但没有用。

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>

Answer 1

可能对以后遇到问题的人有用。我通过添加

解决了这个问题

ViewCompat.requestApplyInsets(view)

到我片段的 onActivityCreated 方法。 view - 片段的根视图

在我的例子中它看起来像：

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)
            }
        }

更新（6/27/2020）： 由于 onActivityCreated 方法在 SDK >=29 上被弃用，您可以在 onViewCreated 方法中使用上面的代码：

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    ViewCompat.requestApplyInsets(view)
}

Answer 2

问题的解决方法是将bottomNavigationView setOnApplyWindowsListener设置为null：

setOnApplyWindowInsetsListener(null)

我在为我的 AR Core Sceneform 片段实现底部导航视图时遇到了这个问题。

Extra padding issue

Extra padding issue resolved

全屏时 BottomNavigationView 跳起来留空 space

BottomNavigationView jumps up leaving blank space when fullscreen

java

android

fullscreen

bottomnavigationview