GridView添加网格线

<GridView

        android:background="@color/gray"
        android:columnWidth="60dp" 
        android:numColumns="5"
        android:listSelector="@null" 
        android:verticalSpacing="1.0px"
 纵向的横线
        android:horizontalSpacing="1.0px"
 横向的纵线
        android:soundEffectsEnabled="true"
        android:smoothScrollbar="true"  
        android:stretchMode="columnWidth" 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_above="@+id/llayout2"
        android:layout_below="@+id/llayout1"/>

//Item 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white"
>