Scrolling Toolbar funktioniert nicht auf Kitkat

Question

Das ist mein Haupt Layout ist:

<?xml version="1.0" encoding="utf-8"?> 
 

 
<!-- 
 
    ~ Copyright (c) - Software developed by iClaude. 
 
    --> 
 

 
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
 
    android:id="@+id/drawer_layout" 
 
    android:layout_width="match_parent" 
 
    android:layout_height="match_parent" 
 
    android:fitsSystemWindows="true"> 
 

 
    <android.support.design.widget.CoordinatorLayout 
 
     android:id="@+id/main_content" 
 
     android:layout_width="match_parent" 
 
     android:layout_height="match_parent"> 
 

 
     <android.support.design.widget.AppBarLayout 
 
      android:id="@+id/appbar" 
 
      android:layout_width="match_parent" 
 
      android:layout_height="wrap_content" 
 
      android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" 
 
      android:elevation="4dp"> 
 

 
      <android.support.v7.widget.Toolbar 
 
       android:id="@+id/toolbar" 
 
       android:layout_width="match_parent" 
 
       android:layout_height="?attr/actionBarSize" 
 
       app:popupTheme="@style/ThemeOverlay.AppCompat.Light" 
 
       app:layout_scrollFlags="scroll|enterAlways" /> 
 

 
      <android.support.design.widget.TabLayout 
 
       android:id="@+id/sliding_tabs" 
 
       android:layout_width="match_parent" 
 
       android:layout_height="wrap_content" 
 
       style="@style/MioStileTabLayout" 
 
       app:tabMode="scrollable" /> 
 

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

 
     <!-- The main content view --> 
 
     <RelativeLayout 
 
      android:id="@+id/main_rlUpdatingDatabase" 
 
      android:layout_width="match_parent" 
 
      android:layout_height="match_parent" 
 
      android:visibility="visible" > 
 

 
      <ProgressBar 
 
       android:id="@+id/main_pbUpdatingDatabase" 
 
       android:layout_width="wrap_content" 
 
       android:layout_height="wrap_content" 
 
       android:layout_centerHorizontal="false" 
 
       android:layout_centerInParent="true" 
 
       android:layout_centerVertical="false" 
 
       android:visibility="visible" /> 
 

 
      <TextView 
 
       android:id="@+id/main_tvUpdatingDatabase" 
 
       android:layout_width="wrap_content" 
 
       android:layout_height="wrap_content" 
 
       android:layout_alignParentBottom="false" 
 
       android:layout_below="@id/main_pbUpdatingDatabase" 
 
       android:layout_centerHorizontal="false" 
 
       android:layout_centerInParent="true" 
 
       android:layout_centerVertical="false" 
 
       android:text="@string/intro_updatingDatabase" 
 
       android:textAppearance="?android:attr/textAppearanceMedium" 
 
       android:visibility="visible" 
 
       android:textColor="@color/text_secondary" /> 
 

 
     </RelativeLayout> 
 

 
     <android.support.v4.view.ViewPager 
 
      android:id="@+id/pager" 
 
      android:layout_width="match_parent" 
 
      android:layout_height="wrap_content" 
 
      android:visibility="invisible" 
 
      android:layout_marginTop="8dp" 
 
      app:layout_behavior="@string/appbar_scrolling_view_behavior"/> 
 

 
     <android.support.design.widget.FloatingActionButton 
 
      android:id="@+id/fab" 
 
      app:fabSize="normal" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:src="@drawable/ic_content_new" 
 
      android:layout_gravity="bottom|end" 
 
      app:elevation="6dp" 
 
      app:pressedTranslationZ="6dp" 
 
      android:layout_marginRight="@dimen/fab_margin_right" 
 
      android:layout_marginEnd="@dimen/fab_margin_right" 
 
      android:layout_marginBottom="@dimen/fab_margin_bottom" 
 
      android:onClick="animateFab" 
 
      app:layout_behavior="com.flingsoftware.personalbudget.app.utility.RidimensionaFABBehavior"/> 
 

 
     <android.support.design.widget.FloatingActionButton 
 
      android:id="@+id/fabFav" 
 
      app:fabSize="normal" 
 
      android:visibility="gone" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:src="@drawable/ic_action_important" 
 
      android:layout_gravity="bottom|end" 
 
      app:elevation="6dp" 
 
      app:pressedTranslationZ="6dp" 
 
      app:backgroundTint="@color/primary" 
 
      android:layout_marginRight="@dimen/fab_margin_right" 
 
      android:layout_marginEnd="@dimen/fab_margin_right" 
 
      android:layout_marginBottom="@dimen/fab_margin_bottom" 
 
      android:onClick="launchFav" 
 
      android:alpha="0" /> 
 

 
     <android.support.design.widget.FloatingActionButton 
 
      android:id="@+id/fabMic" 
 
      app:fabSize="normal" 
 
      android:visibility="gone" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:src="@drawable/ic_action_mic" 
 
      android:layout_gravity="bottom|end" 
 
      app:elevation="6dp" 
 
      app:pressedTranslationZ="6dp" 
 
      app:backgroundTint="@color/primary" 
 
      android:layout_marginRight="@dimen/fab_margin_right" 
 
      android:layout_marginEnd="@dimen/fab_margin_right" 
 
      android:layout_marginBottom="@dimen/fab_margin_bottom" 
 
      android:onClick="launchVocRec" 
 
      android:alpha="0" /> 
 

 
     <android.support.design.widget.FloatingActionButton 
 
      android:id="@+id/fabAgg" 
 
      app:fabSize="normal" 
 
      android:visibility="gone" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:src="@drawable/ic_content_new" 
 
      android:layout_gravity="bottom|end" 
 
      app:elevation="6dp" 
 
      app:pressedTranslationZ="6dp" 
 
      app:backgroundTint="@color/primary" 
 
      android:layout_marginRight="@dimen/fab_margin_right" 
 
      android:layout_marginEnd="@dimen/fab_margin_right" 
 
      android:layout_marginBottom="@dimen/fab_margin_bottom" 
 
      android:onClick="aggiungi" 
 
      android:alpha="0" /> 
 

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

 
    <!-- The navigation drawer --> 
 

 
    <android.support.design.widget.NavigationView 
 
     android:id="@+id/navigation_view" 
 
     android:layout_width="wrap_content" 
 
     android:layout_height="match_parent" 
 
     android:layout_gravity="start"> 
 

 
     <RelativeLayout 
 
      android:layout_width="match_parent" 
 
      android:layout_height="match_parent"> 
 

 
      <include 
 
       android:id="@+id/navigation_drawer_header_include" 
 
       layout="@layout/header" /> 
 

 
      <ListView 
 
       android:id="@+id/left_drawer" 
 
       android:layout_below="@id/navigation_drawer_header_include" 
 
       android:layout_width="match_parent" 
 
       android:layout_height="match_parent" 
 
       android:choiceMode="singleChoice" 
 
       android:divider="@android:color/transparent" 
 
       android:dividerHeight="0dp" 
 
       android:background="@color/nav_drawer_sfondo" /> 
 

 
     </RelativeLayout> 
 

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

 
</android.support.v4.widget.DrawerLayout>

Mit dem ViewPager ich ein Fragment laden ein ExpandableListview (Erweiterung Listview) enthält. Auf API 19 Kitkat scrollt die Symbolleiste nicht in und aus dem Display, wenn ich durch die Liste blättern. Auf API 21 funktioniert alles gut. Wie löst man dieses Problem?

Vielen Dank.

Answer 1

ListView nicht verschachtelten Bildlauf 21 vor der API unterstützen: die APIs buchstäblich existieren nicht für Rahmenansichten vor der Einführung von verschachtelten Scrollen in API 21 und es wird Scrollen verschachtelt, dass CoordinatorLayout und AppBarLayout verlassen.