android - Negative margin bigger than view's height on pre lollipop devices -


it seems not possible assign negative value bigger view's dimensions. example, lets have following layout:

    <?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:background="@color/colorprimary"     android:layout_height="match_parent"     android:orientation="vertical">      <relativelayout         android:id="@+id/toolbar"         android:layout_width="match_parent"         android:layout_height="56dp"         android:background="@color/colorprimary"         android:layout_margintop="-2dp">          <imageview             android:id="@+id/closeiv"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_centervertical="true"             android:layout_margin="12dp"             android:src="@drawable/ic_close_white_24dp" />          <textview             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_centervertical="true"             android:layout_torightof="@id/closeiv"             android:text="galerÍa"             android:textcolor="@color/white"             android:textsize="17sp"             android:textstyle="bold" />         <view             android:layout_alignparentbottom="true"             android:background="@android:color/black"             android:layout_width="match_parent"             android:layout_height="0.5dp"/>     </relativelayout>       <imageview         android:id="@+id/pictureiv"         android:scaletype="centercrop"         android:layout_width="match_parent"         android:layout_below="@+id/toolbar"         android:layout_height="wrap_content"/>      <android.support.v7.widget.recyclerview         android:id="@+id/galleryrv"         android:layout_below="@+id/pictureiv"         android:background="@android:color/black"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:layout_alignparentbottom="true"         android:layout_margintop="2dp"         android:textappearance="?android:attr/textappearancelarge"/>     <view         android:layout_below="@id/pictureiv"         android:layout_width="match_parent"         android:background="@drawable/grid_layout_separator"         android:layout_height="10dp"/>      </relativelayout> 

if set top margin of toolbar bigger toolbar's height, let's -200dp, output in postlollipop devices toolbar hidden, 144dp of image view hidden , recyclerview stretched 200dp, can see similar behaviour on instagram's gallery. in pre lollipop devices output be, toolbar hidden, imageview on top , recyclerview stretched 56 dp. seems not possible set negative margin bigger toolbar's height, there workaround have similar behaviour in prelollipop devices?


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