Android高手进阶教程(二)之----Android(安卓)Launcher抽屉类SlidingDrawer的使用!
16lz
2022-01-05
转载至:http://weizhulin.blog.51cto.com/1556324/311461
最近在研究Lanucher ,看了源码,发现了SlidingDrawer 这个类,也就是所谓的"抽屉"类。它的用法很简单,要包括handle ,和content . handle 就是当你点击它的时候,content 要么抽抽屉要么关抽屉。别的不多说了,具体步骤如下. 1.新建Android 工程,命名为SlidingDrawer . 2.准备素材,在这里我的图标是用Launcher2 里面的图标,放在drawable-hdpi 文件夹目录结构如下: 3.设置main.xml 布局:代码如下: view plaincopy to clipboardprint?4.设置handle 图标的样式,在drawable 里添加handle.xml ,代码如下:
- <?xmlversion="1.0"encoding="utf-8"?>
- <LinearLayoutxmlns: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>
- <?xmlversion="1.0"encoding="utf-8"?>
- <LinearLayoutxmlns: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>
5.运行之。将会得到如下效果: 的比较简单呵呵,如果想深入了解,大家看Launcher 源码吧!
- viewplaincopytoclipboardprint?
- <?xmlversion="1.0"encoding="utf-8"?>
- <selectorxmlns:android="http://schemas.android.com/apk/res/android">
- <itemandroid:state_window_focused="false"android:state_enabled="true"android:drawable="@drawable/handle_normal"/>
- <itemandroid:state_pressed="true"android:drawable="@drawable/handle_pressed"/>
- <itemandroid:state_focused="true"android:state_enabled="true"android:drawable="@drawable/handle_focused"/>
- <itemandroid:state_enabled="true"android:drawable="@drawable/handle_normal"/>
- <itemandroid:state_focused="true"android:drawable="@drawable/handle_focused"/>
- </selector>
- <?xmlversion="1.0"encoding="utf-8"?>
- <selectorxmlns:android="http://schemas.android.com/apk/res/android">
- <itemandroid:state_window_focused="false"android:state_enabled="true"android:drawable="@drawable/handle_normal"/>
- <itemandroid:state_pressed="true"android:drawable="@drawable/handle_pressed"/>
- <itemandroid:state_focused="true"android:state_enabled="true"android:drawable="@drawable/handle_focused"/>
- <itemandroid:state_enabled="true"android:drawable="@drawable/handle_normal"/>
- <itemandroid:state_focused="true"android:drawable="@drawable/handle_focused"/>
- </selector>
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