關於Shape使用的官方文檔:
http://developer.android.com/guide/topics/resources/drawable-resource.html#Shape
Android中常常使用shape來定義控制項的一些顯示內容,下面是Shape中的所有屬性及一個簡單的樣本:
<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape=["rectangle" | "oval" | "line" | "ring"] > <corners android:radius="integer" android:topLeftRadius="integer" android:topRightRadius="integer" android:bottomLeftRadius="integer" android:bottomRightRadius="integer" /> <gradient android:angle="integer" android:centerX="integer" android:centerY="integer" android:centerColor="integer" android:endColor="color" android:gradientRadius="integer" android:startColor="color" android:type=["linear" | "radial" | "sweep"] android:useLevel=["true" | "false"] /> <padding android:left="integer" android:top="integer" android:right="integer" android:bottom="integer" /> <size android:width="integer" android:height="integer" /> <solid android:color="color" /> <stroke android:width="integer" android:color="color" android:dashWidth="integer" android:dashGap="integer" /></shape>
下面是一個小樣本:
main.xml檔案內容如下:
<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true"><shape> <!-- 漸層 --> <gradient android:endColor="#FFFFFF" android:gradientRadius="50" android:startColor="#ff8c00" android:type="radial"/> <!-- 描邊 --> <stroke android:dashGap="3dp" android:dashWidth="5dp" android:width="2dp" android:color="#dcdcdc" /> <!-- 圓角 --> <corners android:radius="2dp" /> <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" /> </shape></item> <item android:state_focused="true"><shape> <gradient android:angle="270" android:endColor="#ffc2b7" android:startColor="#ffc2b7" /> <stroke android:width="2dp" android:color="#dcdcdc" /> <corners android:radius="2dp" /> <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" /> </shape></item> <item><shape> <solid android:color="#ff9d77" /> <stroke android:width="2dp" android:color="#fad3cf" /> <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="0dp" android:topLeftRadius="0dp" android:topRightRadius="5dp" /> <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" /> </shape></item></selector>
button_selector.xml內容如下:
<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true"><shape> <!-- 漸層 --> <gradient android:endColor="#FFFFFF" android:gradientRadius="50" android:startColor="#ff8c00" android:type="radial"/> <!-- 描邊 --> <stroke android:dashGap="3dp" android:dashWidth="5dp" android:width="2dp" android:color="#dcdcdc" /> <!-- 圓角 --> <corners android:radius="2dp" /> <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" /> </shape></item> <item android:state_focused="true"><shape> <gradient android:angle="270" android:endColor="#ffc2b7" android:startColor="#ffc2b7" /> <stroke android:width="2dp" android:color="#dcdcdc" /> <corners android:radius="2dp" /> <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" /> </shape></item> <item><shape> <solid android:color="#ff9d77" /> <stroke android:width="2dp" android:color="#fad3cf" /> <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="0dp" android:topLeftRadius="0dp" android:topRightRadius="5dp" /> <padding android:bottom="10dp" android:left="10dp" android:right="10dp" android:top="10dp" /> </shape></item></selector>
如下:
一般狀態:
按下狀態: