android去掉EditView的默认焦点问题

android:focusable="true" 
android:focusableInTouchMode="true"

<LinearLayout 
style="@style/FillWrapWidgetStyle" 
android:orientation="vertical" 
android:background="@color/black" 
android:gravity="center_horizontal" 
android:focusable="true" 
android:focusableInTouchMode="true" 
> 
<ImageView 
android:id="@+id/logo" 
style="@style/WrapContentWidgetStyle" 
android:background="@drawable/dream_dictionary_logo" 
/> 
<RelativeLayout 
style="@style/FillWrapWidgetStyle" 
android:background="@drawable/searchbar_bg" 
android:gravity="center_vertical" 
> 
<EditText 
android:id="@+id/searchEditText" 
style="@style/WrapContentWidgetStyle" 
android:background="@null" 
android:hint="Search" 
android:layout_marginLeft="40dp" 
android:singleLine="true" 
/> 
</RelativeLayout> 
</LinearLayout>

<LinearLayout
    android:id="@+id/linearLayout_focus"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:layout_width="0px"
    android:layout_height="0px"/>