android - How to remove transparent Toolbar padding when collapsed in CollapsingToolbarLayout -


i use collapsingtoolbarlayout in app when collapsed, there marginleft , marginright in toolbar picture below.
when set toolbar background not transparent ,such red,it normal.
how should remove margin？
wrong toolbar margin

i want below background transparent

xml code 

    <android.support.design.widget.appbarlayout     android:id="@+id/appbarlayout"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:background="@color/transparent">     <android.support.design.widget.collapsingtoolbarlayout         android:id="@+id/toolbarlayout"         android:layout_width="match_parent"         android:layout_height="wrap_content"         app:collapsedtitlegravity="center_horizontal"         app:layout_scrollflags="scroll|exituntilcollapsed"         app:popuptheme="@style/themeoverlay.appcompat.light"         app:expandedtitlegravity="center_horizontal"         app:statusbarscrim="@color/transparent"         app:contentscrim="@color/transparent"         app:expandedtitletextappearance="@style/collapsingtoolbarlayoutexpandedtext"         app:collapsedtitletextappearance="@style/collapsingtoolbarlayoutcollapsedtext"         app:expandedtitlemargintop="0dp"         app:expandedtitlemarginbottom="20dp">          <view             android:id="@+id/venueimage"             android:layout_width="match_parent"             android:layout_height="100dp"             app:layout_collapsemode="parallax"             app:layout_collapseparallaxmultiplier="0.7"/>           <android.support.v7.widget.toolbar             android:id="@+id/toolbar"             android:layout_width="match_parent"             android:layout_height="?attr/actionbarsize"             android:background="@color/transparent"             android:layout_margintop="@dimen/status_bar_height"             app:layout_collapsemode="pin"             app:contentinsetleft="0dp"             app:contentinsetright="0dp"/>      </android.support.design.widget.collapsingtoolbarlayout> </android.support.design.widget.appbarlayout>

adding app:elevation="0dp" appbarlayout widget fixed me.

also in layout have appbarlayout nested inside coordinatorlayout whereas your's reverse.


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