CoordinatorLayout fügt Platz zwischen AppBarLayout und RecyclerView hinzu

Question

CoordinatorLayout fügt Leerzeichen zwischen AppBarLayout und RecyclerView hinzu. Nicht sicher, ob es die Toolbar oder AppBarLayout.

Screenshot des gerenderten Layout am Telefon:

Der Entwurf auf Studio-Rendering nicht, wie dieser Raum.

Jede Idee, was los ist?

Der Code selbst.

<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout 
    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:id="@+id/activity_home_framelayout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:animateLayoutChanges="true" 
    > 

    <android.support.v4.widget.DrawerLayout 
    android:id="@+id/drawer_layout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:animateLayoutChanges="true" 
    > 

    <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:id="@+id/activity_home_coordinator" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:fitsSystemWindows="true" 
     tools:context=".ActivitySignIn"> 


     <android.support.design.widget.AppBarLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:theme="@style/AppTheme.AppBarOverlay" 
     app:elevation="0dp" 
     > 

     <android.support.v7.widget.Toolbar 
      android:id="@+id/toolbar" 
      android:layout_width="match_parent" 
      android:layout_height="?attr/actionBarSize" 
      android:background="@color/colorPrimary" 
      android:theme="@style/OTGToolbarTheme" 
      > 

      <TextView 
      android:id="@+id/toolbar_title" 
      style="@style/textTitle" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="center" 
      android:text="You are logged in" 
      android:textColor="@color/colorAccent"/> 
     </android.support.v7.widget.Toolbar> 

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

     <android.support.v7.widget.RecyclerView 
     android:id="@+id/activity_home_articlecontainer" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:layout_marginTop="0dp" 
     android:background="@color/colorPrimary" 
     android:clipToPadding="false" 
     android:paddingTop="0dp" 
     app:behavior_overlapTop="?attr/actionBarSize" 
     app:layout_behavior="@string/appbar_scrolling_view_behavior" 
     /> 
    </android.support.design.widget.CoordinatorLayout> 

    <android.support.v7.widget.RecyclerView 
     android:id="@+id/NavigationDrawer" 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:background="@color/colorPrimary" 
     android:scrollbars="vertical" 
     /> 
    </android.support.v4.widget.DrawerLayout> 

    <FrameLayout 
    android:id="@+id/activity_home_overlay" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:clickable="true" 
    android:visibility="gone"> 

    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:background="@color/tlgray0" 
     android:orientation="vertical"/> 

    <ProgressBar 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center" 
     android:indeterminate="true"/> 
    </FrameLayout> 
</FrameLayout> 

Answer 1

unterhalb der Linie von Ihrer ersten Recycler Ansicht entfernen, welche id activity_home_articlecontainer

android:layout_gravity="start"