android - How to draw on top on layout when calling camera -

i have tried draw shape on layout use camera application. can draw rectangle , circle, need frame. provide me rectangle filled, not frame. have picture show below. , here code of layout.

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/linearlayout2" android:background="#ffffff" android:layout_width="wrap_content" android:layout_height="match_parent" >  <relativelayout     android:layout_width="wrap_content"     android:layout_height="match_parent"     android:layout_weight="0.91" >      <framelayout         android:id="@+id/cam_preview"         android:layout_width="1120dp"         android:layout_height="840dp"         android:layout_weight="0.91" >     </framelayout>      <view         android:layout_width="360dp"         android:layout_height="525dp"         android:layout_marginleft="50dp"         android:layout_margintop="157dp"         android:layout_weight="0.91"         android:background="@drawable/square" />      <view         android:layout_width="160dp"         android:layout_height="160dp"         android:layout_marginleft="840dp"         android:layout_margintop="480dp"         android:layout_weight="0.91"         android:background="@drawable/circle2" />      <view         android:layout_width="160dp"         android:layout_height="160dp"         android:layout_marginleft="840dp"         android:layout_margintop="200dp"         android:layout_weight="0.91"         android:background="@drawable/circle" />  </relativelayout>  <linearlayout     android:layout_width="160dp"     android:layout_height="800dp"     android:background="#ffffff"     android:orientation="vertical" >      <imageview         android:id="@+id/button_next"         android:layout_width="120dp"         android:layout_height="120dp"         android:layout_gravity="center_horizontal"         android:layout_weight="3"         android:src="@drawable/buttonnext" />      <imageview         android:id="@+id/button_camera"         android:layout_width="120dp"         android:layout_height="120dp"         android:layout_gravity="center_horizontal"         android:layout_weight="2"         android:src="@drawable/buttoncamera" />      <imageview         android:id="@+id/button_back"         android:layout_width="120dp"         android:layout_height="120dp"         android:layout_gravity="center_horizontal"         android:layout_weight="3"         android:src="@drawable/buttonback" />  </linearlayout> 

circle.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"  android:shape="oval" > <stroke android:width="3dp" android:color="#ffff0000"/> </shape> 

square.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <stroke android:width="3dp" android:color="#ffff0000"/> </shape> 

note layout fit 10.1 in tablet.

use transparency of colors. square.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:padding="10dp" android:shape="rectangle" > <solid android:color="#00ffffff" /> <corners     android:bottomleftradius="1dp"     android:bottomrightradius="1dp"     android:topleftradius="1dp"     android:toprightradius="1dp"/> <stroke     android:width="1sp"     android:color="#ffff0000" /> 

solid android:color fill color inside rectangle , turn transparent while stroke android:color lines red.