Android UI（三）SlidingMenu实现滑动菜单（详细 官方）

Jeff Lee blog:   http://www.cnblogs.com/Alandre/  (泥沙砖瓦浆木匠),retain the url when reproduced ! Thanks

效果图：

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一. SlidingMenu简介

github：https://github.com/jfeinstein10/SlidingMenu

官网上面的简介上翻译的：

SlidingMenu是能让开发者很容易的开发有滑动菜单App（像Google+，YouTube，Facebook）的开源android库。只要引入这个开源库的许可代码，就可以很容易免费的用在你想要滑动菜单的app。如下图所示：
                                                                                                 

二.官方小例子

public class SlidingExample extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setTitle(R.string.attach);
        // set the content view
        setContentView(R.layout.content);
        // configure the SlidingMenu
        SlidingMenu menu = new SlidingMenu(this);
        menu.setMode(SlidingMenu.LEFT);
        menu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
        menu.setShadowWidthRes(R.dimen.shadow_width);
        menu.setShadowDrawable(R.drawable.shadow);
        menu.setBehindOffsetRes(R.dimen.slidingmenu_offset);
        menu.setFadeDegree(0.35f);
        menu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);
        menu.setMenu(R.layout.menu);
    }

}

自然你也可以用xml定义一个slidingMenu

<com.jeremyfeinstein.slidingmenu.lib.SlidingMenu
    xmlns:sliding="http://schemas.android.com/apk/res-auto"
    android:id="@+id/slidingmenulayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    sliding:viewAbove="@layout/YOUR_ABOVE_VIEW"
    sliding:viewBehind="@layout/YOUR_BEHIND_BEHIND"
    sliding:touchModeAbove="margin|fullscreen"
    sliding:behindOffset="@dimen/YOUR_OFFSET"
    sliding:behindWidth="@dimen/YOUR_WIDTH"
    sliding:behindScrollScale="@dimen/YOUR_SCALE"
    sliding:shadowDrawable="@drawable/YOUR_SHADOW"
    sliding:shadowWidth="@dimen/YOUR_SHADOW_WIDTH"
    sliding:fadeEnabled="true|false"
    sliding:fadeDegree="float"
    sliding:selectorEnabled="true|false"
    sliding:selectorDrawable="@drawable/YOUR_SELECTOR"/>

官方文档翻译如下：

• viewAbove - 在菜单之上的布局引用

• viewBehind - 在菜单之下的布局引用
• touchModeAbove - 指那一部分屏幕触摸后视图显示
• behindOffset - 菜单显示时，主体显示多少（单位像素）
• behindWidth - 菜单显示，主体显示的宽。默认全屏
• behindScrollScale - 菜单显示的滚动设置
• shadowDrawable - 滚动阴影设置
• shadowWidth - 滚动阴影的宽度
• fadeEnabled - 滑动时菜单的是否渐变
• fadeDegree - 滑动时的渐变程度

三.实现滑动菜单

主要结构：MainAct为主入口，然后各个fragment实现各自内容动作。

MainAct.java

public class MainAct extends FragmentActivity {
	private SlidingMenu menu;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.slidingmenu_main);

        menu = new SlidingMenu(this);
		menu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
		menu.setShadowWidthRes(R.dimen.slidingmenu_shadow_width);
		menu.setShadowDrawable(R.drawable.slidingmenu_shadow);
		menu.setBehindOffsetRes(R.dimen.slidingmenu_offset);
		DisplayMetrics dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		menu.setFadeDegree(0.35f);
		menu.setBehindOffset(dm.widthPixels*50/100);
		menu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);

		menu.setMode(SlidingMenu.LEFT_RIGHT);//这里模式设置为左右都有菜单，RIGHT显示右菜单，LEFT显示左菜单，LEFT_RIGH显示左右菜单
		menu.setContent(R.layout.slidingmenu_content);
		menu.setMenu(R.layout.slidingmenu_menu);

		menu.setSecondaryMenu(R.layout.slidingmenu_menu_2);
		menu.setSecondaryShadowDrawable(R.drawable.slidingmenu_shadow_2);

		getSupportFragmentManager()
			.beginTransaction()
			.replace(R.id.slidingmenu_content, new MainFragment(menu))
			.commit();//设置主页面内容

		getSupportFragmentManager()
			.beginTransaction()
			.replace(R.id.slidingmenu_menu, new MainLeftFragment())
			.commit();//设置左菜单内容

		getSupportFragmentManager()
			.beginTransaction()
			.replace(R.id.slidingmenu_menu_2, new MainRightFragment(menu))
			.commit();//设置右菜单内容

    }
}

总结:用则简单则难