android - ImageView width not matching parent -

i'm trying have 3 sections under each others using linearlayout :

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:ads="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical"     tools:context=".imageediting">      <linearlayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_gravity="center"         android:gravity="center"         android:orientation="vertical">          <com.google.android.gms.ads.adview             android:id="@+id/adviewofediting"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_margin="0dp"             ads:adsize="banner"             ads:adunitid="@string/banner_ad_unit_id" />      </linearlayout>      <linearlayout         android:layout_width="match_parent"         android:layout_height="0dp"         android:layout_weight="1"         android:orientation="vertical">          <imageview             android:id="@+id/imageeditview"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:adjustviewbounds="true"             android:layout_margin="0dp"             android:scaletype="fitxy" />       </linearlayout>      <linearlayout         android:layout_width="match_parent"         android:layout_height="wrap_content"          android:background="#123456"         android:gravity="center"         android:orientation="horizontal">          <imageview             android:id="@+id/view"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:clickable="true"             android:src="@drawable/qa_gallery" />          <imageview             android:id="@+id/zoom"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:clickable="true"             android:src="@drawable/qa_camera" />          <imageview             android:id="@+id/erase"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:clickable="true"             android:src="@drawable/qa_trash" />          <imageview             android:id="@+id/crop"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:clickable="true"             android:src="@drawable/qa_view_post" />          <imageview             android:id="@+id/undo"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:clickable="true"             android:src="@drawable/qa_reply_comment" />      </linearlayout>  </linearlayout> 

all seems fine , image of middle section , it's not matching parent size, has gaps @ left&right, other sections fine! , doing wrong here?

edit: screenshot

i tried layout , working perfect :

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:ads="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical">  <linearlayout     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:layout_gravity="center"     android:gravity="center"     android:orientation="vertical">      <imageview         android:layout_width="match_parent"         android:layout_height="60dp"         android:background="#343434"/>  </linearlayout>  <linearlayout     android:layout_width="match_parent"     android:layout_height="0dp"     android:layout_weight="1"     android:orientation="vertical">      <imageview         android:id="@+id/imageeditview"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:adjustviewbounds="true"         android:layout_margin="0dp"         android:background="#654321"         android:scaletype="fitxy" />   </linearlayout>  <linearlayout     android:layout_width="match_parent"     android:layout_height="wrap_content"      android:background="#123456"     android:gravity="center"     android:orientation="horizontal">      <imageview         android:id="@+id/view"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:clickable="true"         android:src="@drawable/common_ic_googleplayservices" />      <imageview         android:id="@+id/zoom"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:clickable="true"         android:src="@drawable/common_ic_googleplayservices"  />      <imageview         android:id="@+id/erase"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:clickable="true"         android:src="@drawable/common_ic_googleplayservices"  />      <imageview         android:id="@+id/crop"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:clickable="true"         android:src="@drawable/common_ic_googleplayservices"  />      <imageview         android:id="@+id/undo"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:clickable="true"         android:src="@drawable/common_ic_googleplayservices"  />  </linearlayout> 

and screenshot :