Fab bekommt nur manchmal Fokus

Question

Ich habe ein Problem beim Testen der Fokussierbarkeit meiner App mit D-Pad. Hier gibt es zwei Screenshots meiner App:

Im Bild von der linken Seite, die fab ist „außen (oder unten)“ die Liste und nach dem letzten Elemente erhält es den Fokus, wenn nach unten navigieren, also ist in diesem Fall alles in Ordnung. Das Problem kommt mit dem Bild der rechten Seite. Die Fab ist "innerhalb" der ListView und aus diesem Grund (ich denke, aber ich bin mir nicht sicher) wird es nicht immer den Fokus bekommen. Kann man etwas dagegen tun?

Eine Erweiterung wäre, dass die Fab den Fokus immer vor der Liste (dh unmittelbar nach den Tabs) bekommen würde, egal wo die Fab im Moment im Layout positioniert ist, aber das Problem ist, dass ich Ich weiß, wie es geht, da Android die Fokusreihenfolge meines Layouts bestimmt. Jede Hilfe würde sehr geschätzt werden.

UPDATE: fragment_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<android.support.design.widget.CoordinatorLayout 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:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:fitsSystemWindows="true" 

    tools:mContext=".FragmentMain"> 
    <!---marginBottom for ads--> 
    <android.support.v4.view.ViewPager 
     android:id="@+id/viewpagerMain" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_marginTop="?attr/actionBarSize" 
     android:layout_marginBottom="60dp" 
     app:layout_behavior="@string/appbar_scrolling_view_behavior" /> 

    <android.support.design.widget.TabLayout 
     android:id="@+id/tabsMain" 
     android:layout_width="match_parent" 
     android:layout_height="90dp" 
     android:layout_marginTop="50dp" 
     android:background="?attr/colorPrimary" 
     app:layout_anchor="@+id/appbar" 
     app:layout_anchorGravity="bottom" 
     app:tabGravity="fill" 
     app:tabIndicatorHeight="5dp" 
     app:tabMode="fixed" 
     app:tabPaddingTop="60dp" 
     app:tabSelectedTextColor="@android:color/white" 
     app:tabTextAppearance="@style/TabTextAppearance" /> 

    <android.support.design.widget.AppBarLayout 
     android:id="@+id/appbar" 
     android:layout_width="match_parent" 
     android:layout_height="330dp" 
     android:fitsSystemWindows="true" 
     android:theme="@style/AppTheme.AppBarOverlay"> 

     <android.support.design.widget.CollapsingToolbarLayout 
      android:id="@+id/collapsing_toolbar" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:fitsSystemWindows="true" 
      app:contentScrim="?attr/colorPrimary" 
      app:layout_scrollFlags="scroll|exitUntilCollapsed"> 


      <FrameLayout 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginTop="86dp" 
       android:background="@color/white" 
       android:orientation="vertical"> 


        <com.github.mikephil.charting.charts.LineChart 
         android:id="@+id/chart" 
         android:layout_width="match_parent" 
         android:layout_height="250dp" 
         android:layout_marginLeft="5dp"/> 

        <ProgressBar 
         android:id="@+id/progressBar" 
         android:background="@drawable/progress" 
         android:layout_width="60dp" 
         android:layout_height="60dp" 
         android:layout_gravity="center" 

         android:visibility="visible" 
         tools:visibility="visible"> 

        </ProgressBar> 
       </FrameLayout> 

      <android.support.v7.widget.Toolbar 
       android:id="@+id/toolbar" 
       android:layout_width="match_parent" 
       android:layout_height="?attr/actionBarSize" 
       android:background="?attr/colorPrimary" 
       app:layout_collapseMode="pin" 
       app:popupTheme="@style/AppTheme.PopupOverlay" 


       /> 


     </android.support.design.widget.CollapsingToolbarLayout> 


    </android.support.design.widget.AppBarLayout> 

    <!-- http://antonioleiva.com/floating-action-button/--> 
    <android.support.design.widget.FloatingActionButton 
     android:id="@+id/fabMain" 
     android:focusable="true" 
     android:background="@drawable/selector_focusable_fab" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="bottom|end|right" 
     android:layout_marginBottom="60dp" 
     android:layout_marginRight="16dp" 
     android:layout_marginEnd="16dp" 
     android:src="@drawable/plus_48" 
     app:pressedTranslationZ="12dp" 
     app:rippleColor="@color/colorAccent"/> 

    <include layout="@layout/ad_bottom_bar" 
     android:id="@+id/advBottomBar" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_gravity="bottom" 

     /> 
</android.support.design.widget.CoordinatorLayout> 

security_item.xml

<?xml version="1.0" encoding="utf-8"?> 
<!-- for statedrawable list to work we need to set background in cardview and 
immediate linearlayout. Also set android.clickable in cardview AND 
android:duplicateParentState in linearlayout--> 
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:card_view="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:focusable="true" 
    android:background="@drawable/selector_security" 
    android:clickable="true" 
    android:nextFocusRight="@+id/overflow" 
    app:contentPadding="@dimen/si_card_view_content_padding" 
    android:id="@+id/cardView" 
    card_view:cardCornerRadius="0dp" 
    card_view:cardElevation="@dimen/si_card_view_elevation" 
    card_view:cardUseCompatPadding="true" 
    > 

    <LinearLayout 
     android:id="@+id/linearParent" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical" 
     android:nextFocusRight="@+id/overflow" 
     android:duplicateParentState="true" 
     android:background="@drawable/selector_security"> 

     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:orientation="horizontal"> 

      <TextView 
       android:id="@id/ticker" 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="3" 

       tools:text="GOOG" /> 

      <TextView 
       android:id="@+id/market" 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="3" 
       android:gravity="start" 
       tools:text="EQUITY" /> 
      <ImageView 
       android:id="@+id/overflow" 
       android:focusable="true" 
       android:nextFocusLeft="@+id/cardView" 
       android:nextFocusDown="@+id/cardView" 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="1" 
       android:background="@drawable/selector_overflow_mini" 
       android:tint="@color/gray700" 
       android:src="@drawable/ic_overflow"/> 
     </LinearLayout> 

     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:orientation="horizontal"> 

      <com.carlos.capstone.customcomponents.AutoResizeTextView 
       android:id="@+id/securityName" 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="5" 
       android:textStyle="bold" 
       tools:text="Alphabet Inc." /> 

      <TextView 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="2" 
       android:gravity="end" 
       android:textSize="@dimen/si_label_day" 
       android:text="Day(max/min)" 
       tools:text="Day(max/min)" /> 
     </LinearLayout> 

     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:orientation="horizontal"> 

      <TextView 
       android:id="@+id/price" 
       android:layout_marginTop="3dp" 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="3" 
       android:textSize="@dimen/si_price_text_size" 
       tools:text="710,89" /> 

      <LinearLayout 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="1.9" 
       android:orientation="vertical"> 



       <LinearLayout 
        android:layout_width="match_parent" 
        android:layout_height="0dp" 
        android:layout_weight="1" 
        android:orientation="horizontal"> 

        <LinearLayout 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:orientation="horizontal"> 

        <com.carlos.capstone.customcomponents.AutoResizeTextView 
         android:id="@+id/percentChange" 
         android:layout_width="0dp" 
         android:layout_height="wrap_content" 
         android:layout_weight="1" 
         android:layout_marginTop="@dimen/si_percent_margin_top" 
         android:textSize="@dimen/si_percent_text_size" 
         android:gravity="end" 
         tools:text="-110.21%" /> 
        </LinearLayout> 

       </LinearLayout> 


      </LinearLayout> 

      <LinearLayout 
       android:layout_width="0dp" 
       android:layout_height="wrap_content" 
       android:layout_weight="2" 
       android:orientation="vertical"> 

       <com.carlos.capstone.customcomponents.AutoResizeTextView 
        android:id="@+id/dayMax" 
        android:layout_width="match_parent" 
        android:layout_height="0dp" 
        android:layout_weight="1" 
        android:textColor="@color/gray400" 
        android:gravity="end" 
        tools:text="716,49" /> 

       <com.carlos.capstone.customcomponents.AutoResizeTextView 
        android:id="@+id/dayMin" 
        android:paddingTop="@dimen/si_min_padding_top" 
        android:layout_width="match_parent" 
        android:layout_height="0dp" 
        android:layout_weight="1" 
        android:gravity="end" 
        android:textColor="@color/gray400" 
        tools:text="706,02" /> 


      </LinearLayout> 

     </LinearLayout> 
    </LinearLayout> 
</android.support.v7.widget.CardView> 

Answer 1

Sie können einen separaten Layout erstellen und dort setzen Sie Ihre fab. Dies wird diesen Teil zwingen, immer gesehen zu werden.

Zum Beispiel

<LinearLayout> 
    //list stuff here 
    <LinearLayout> 
    //fab stuff 
    </LinearLayout> 
</LinearLayout>