Android：【動畫】帶幀動畫的Selector

普通selector只能在兩種狀態圖片之間切換，animated-selector容許經過幀動畫從一個狀態切換到另外一個狀態

XML代碼：

<?xml version="1.0" encoding="utf-8"?>
<animated-selector xmlns:android="http://schemas.android.com/apk/res/android">

    <!-- 開啓狀態 -->
    <item
            android:id="@+id/state_on"
            android:state_selected="true"
            android:drawable="@drawable/bt_switch_01"/>

    <!-- 關閉狀態 -->
    <item
            android:id="@+id/state_off"
            android:state_selected="false"
            android:drawable="@drawable/bt_switch_10"/>

    <!-- 開啓切換到關閉的動畫 -->
    <transition
            android:fromId="@id/state_on"
            android:toId="@id/state_off">
        <animation-list>
            <item
                    android:drawable="@drawable/bt_switch_01"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_02"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_03"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_04"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_05"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_06"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_07"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_08"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_09"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_10"
                    android:duration="30"/>
        </animation-list>
    </transition>

    <!-- 關閉切換到開啓的動畫 -->
    <transition
            android:fromId="@id/state_off"
            android:toId="@id/state_on">
        <animation-list>
            <item
                    android:drawable="@drawable/bt_switch_10"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_09"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_08"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_07"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_06"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_05"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_04"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_03"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_02"
                    android:duration="30"/>
            <item
                    android:drawable="@drawable/bt_switch_01"
                    android:duration="30"/>
        </animation-list>
    </transition>
</animated-selector>
複製代碼

Java代碼：

//將animated-selector設置爲控件圖像
            Drawable drawable = getResources().getDrawable(R.drawable.animated_selector);
            iv.setImageDrawable(drawable);
            //將控件設置爲打開狀態
            iv.setSelected(true);
            //將控件設置爲關閉狀態
            iv.setSelected(false);
複製代碼