巧妙地添加GridView的 網格線

ListView 中設置分隔線的加以下參數便可:
android:divider="@color/gray"
android:dividerHeight="1dp"

GridView網格佈局，默認狀況下是沒有網格線的

查找網上資料，找到了一種爲GridView添加網格線的小技巧

實際上，該網格線是經過設置GridView各子項的間隔，並分別設置GridView背景色與子項背景色實現的。

實現方法

1. 設置GridView背景色，設置水平間方向間隔屬性值android:horizontalSpacing和豎直方向間隔屬性值android:verticalSpacing

2. 設置GridView子項背景色

示例代碼：
1.main.xml
 <GridView
        android:id="@+id/gv_words"
        android:visibility="gone"
        android:background="@color/gray"
        android:columnWidth="60dp" 
        android:numColumns="5"
        android:listSelector="@null" 
        android:verticalSpacing="1.0px" 
        android:horizontalSpacing="1.0px"
        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"/>

2.GrivViewItem佈局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white" >
    <RelativeLayout
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_margin="5dp">

          <TextView
            android:id="@+id/gv_bushou_TextView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/ItemImage"
            android:layout_margin="1dp"
            android:layout_alignParentTop="true"
            android:layout_alignParentLeft="true"
            android:layout_above="@+id/gv_bushou_TextView2"
            android:layout_toLeftOf="@+id/gv_bushou_TextView2"
            android:textSize="25dp"
            android:textColor="@color/blue"
            android:text="難" >
        </TextView>
   
        <TextView
            android:id="@+id/gv_bushou_TextView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/ItemImage"
            android:layout_alignParentBottom="true"
            android:layout_alignParentRight="true"
            android:textColor="@color/gray"
            android:textSize="10dp"
            android:text="1筆" >
        </TextView>
    </RelativeLayout>
</LinearLayout>

3.運行截圖

二、定義Selector來實現

http://stackoverflow.com/questions/7132030/android-gridview-draw-dividers