android 控件描边取消重叠

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="horizontal" >
 6     <EditText
 7         android:id="@+id/myet"
 8         android:layout_weight="4"
 9         android:layout_width="0dip"
10         android:layout_height="50dp"
11         android:ems="10"
12         android:background="@drawable/border_text_selector"
13         android:layout_marginRight="-1dp"
14         android:singleLine="true"
15          >
16     </EditText>
17     <ImageView
18         android:id="@+id/myiv"
19         android:layout_weight="1"
20         android:layout_width="0dp"
21         android:layout_height="50dp"
22         android:background="@drawable/bg_border"
23         android:layout_marginLeft="-1dp"
24         android:src="@drawable/ic_launcher" />
25 </LinearLayout>