<FrameLayout android:width="match_parent"
             android:height="match_parent">

    <EditText android:width="match_parent"
              android:height="match_parent" />

    <ImageView android:width="wrap_content"
               android:height="wrap_content"
               android:margin="5dp"
               android:src="@drawable/ic_attach"
               android:layout_gravity="right|bottom" />
</FrameLayout>

<EditText
    android:id="@+id/edit_text"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:lines="5" />

<ImageView
    android:layout_alignBottom="@+id/edit_text"
    android:layout_alignRight="@+id/edit_text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/phone"/>