Sliding Title Bar 与 Sliding Content Only两个demo实现了不同的功能,前者在用户滑动的时候,Actionbar也能跟随主Activity移动,后者则保持Actionbar位置不变。
Sliding Title Bar 代码:
public class SlidingTitleBar extends BaseActivity { public SlidingTitleBar() { super(R.string.title_bar_slide); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // set the Above View setContentView(R.layout.content_frame); getSupportFragmentManager() .beginTransaction() .replace(R.id.content_frame, new SampleListFragment()) .commit(); setSlidingActionBarEnabled(true); } }
SlidingTitleBar 继承了 BaseActivity ,BaseActivity的代码如下:
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setTitle(mTitleRes); // set the Behind View setBehindContentView(R.layout.menu_frame); if (savedInstanceState == null) { //开启事务 FragmentTransaction t = this.getSupportFragmentManager().beginTransaction(); mFrag = new SampleListFragment(); t.replace(R.id.menu_frame, mFrag);//将SampleListFragment添加到FrameLayout布局中来 t.commit();//提交事务 } else { mFrag = (ListFragment)this.getSupportFragmentManager().findFragmentById(R.id.menu_frame); } // 配置Sliding Menu SlidingMenu sm = getSlidingMenu(); sm.setShadowWidthRes(R.dimen.shadow_width); sm.setShadowDrawable(R.drawable.shadow); sm.setBehindOffsetRes(R.dimen.slidingmenu_offset); sm.setFadeDegree(0.35f); sm.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN); getSupportActionBar().setDisplayHomeAsUpEnabled(true); }
BaseActivity只是配置了隐藏的视图,而在SlidingTitleBar中配置了最上层的视图。Sliding Menu本质上使用的是类似Framelayout的布局加上复杂的动画。
其中:
setSlidingActionBarEnabled(true);
可以配置Actionbar是否会随内容滑动。