java - 全屏显示时，BottomNavigationView跳起来留下空白

对于BottomNavigationView的最后一个选项卡，我希望内容位于状态栏下方，并使状态栏完全透明。该工程按预期但BottomNavigationView跳起来留在底部的空白区域，选择最后一个选项卡时。

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。任何帮助表示赞赏。



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>

最佳答案

对于将来遇到问题的人来说可能很有用。
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 View
在我的情况下，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):
由于在SDK> = 29上不推荐使用onActivityCreated方法，因此您可以在onViewCreated方法内部使用上面的代码:

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

关于java - 全屏显示时，BottomNavigationView跳起来留下空白，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/50207843/