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                最近在研究**Lanucher**,看了源碼,發現了**SlidingDrawer**這個類,也就是所謂的"抽屜"類。它的用法很簡單,要包括**handle**,和**content**. ? **handle**就是當你點擊它的時候,**content**要么抽抽屜要么關抽屜。別的不多說了,具體步驟如下. ? 1.新建**Android**工程,命名為**SlidingDrawer**. ? 2.準備素材,在這里我的圖標是用**Launcher2**里面的圖標,放在**drawable-hdpi**文件夾目錄結構如下: ? ? ![](https://box.kancloud.cn/2016-08-10_57aae595b0e37.gif) ? 3.設置**main.xml**布局:代碼如下: ? ~~~ <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#808080" > <SlidingDrawer android:id="@+id/slidingdrawer" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:handle="@+id/handle" android:content="@+id/content"> <Button android:id="@+id/handle" android:layout_width="88dip" android:layout_height="44dip" android:background="@drawable/handle" /> <LinearLayout android:id="@+id/content" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#00ff00"> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Button" /> <EditText android:id="@+id/editText" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout> </SlidingDrawer> </LinearLayout> ~~~ ? 4.設置**handle**圖標的樣式,在**drawable**里添加**handle.xml**,代碼如下: ? ~~~ <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_window_focused="false" android:state_enabled="true" android:drawable="@drawable/handle_normal" /> <item android:state_pressed="true" android:drawable="@drawable/handle_pressed" /> <item android:state_focused="true" android:state_enabled="true" android:drawable="@drawable/handle_focused" /> <item android:state_enabled="true" android:drawable="@drawable/handle_normal" /> <item android:state_focused="true" android:drawable="@drawable/handle_focused" /> </selector> ~~~ ? 5.運行之。將會得到如下效果: ? ![](https://box.kancloud.cn/2016-08-10_57aae595c7a08.gif) ? ![](https://box.kancloud.cn/2016-08-10_57aae595e35de.gif) ? 的比較簡單呵呵,如果想深入了解,大家看**Launcher**源碼吧!
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