ActionBar取代了以前的TitleBar,是一种更加灵活的人机交互方式; 1.常见普通ActionBar <menu xmlns:android="http://schemas./apk/res/android" > <item android:id="@+id/action_settings" android:showAsAction="always|collapseActionView" android:title="settings"/> </menu> 其中,showAsAction是一个枚举类型的值,有5个取值;
注:它们之间可以配合使用; 2.上下分开的独立的ActionBar android:uiOptions="splitActionBarWhenNarrow" 将这段代码放置到清单配置文件的对应的activity里面即可 3.可扩展的ActionBar(搜索框) menu.xml <menu xmlns:android="http://schemas./apk/res/android" > <item android:id="@+id/action_query" android:actionLayout="@layout/al" android:showAsAction="always|collapseActionView" android:title="query"/> </menu> al.xml <?xml version="1.0" encoding="utf-8"?> <EditText xmlns:android="http://schemas./apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" > </EditText> 注意在menuitem里面配置的android:actionLayout属性,他代表当点击item的时候需要显示的view;也可通过android:actionViewClass属性指定; @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); for (int i = 0; i < menu.size(); i++) { menu.getItem(i).setOnActionExpandListener( new OnActionExpandListener() { @Override public boolean onMenuItemActionExpand(MenuItem arg0) { Log.e("tag", "onMenuItemActionExpand"); return true; } @Override public boolean onMenuItemActionCollapse(MenuItem arg0) { Log.e("tag", "onMenuItemActionCollapse"); return true; } }); } return super.onCreateOptionsMenu(menu); } 4.Tab样式ActionBar 添加实现代码 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_tab); mActionBar = getActionBar(); mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); mActionBar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE | ActionBar.DISPLAY_SHOW_HOME); ActionBar.Tab tabA = mActionBar.newTab().setText("ATab"); ActionBar.Tab tabB = mActionBar.newTab().setText("BTab"); tabA.setTabListener(new MyTabsListener(new AFragment())); tabB.setTabListener(new MyTabsListener(new BFragment())); mActionBar.addTab(tabA, 0); mActionBar.addTab(tabB, 1); mActionBar.setSelectedNavigationItem(1); } MyTabsListener.java(监听tab)改变事件 protected class MyTabsListener implements ActionBar.TabListener { private Fragment frag; public MyTabsListener(Fragment frag) { super(); this.frag = frag; } @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { ft.replace(R.id.framel, frag); } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { } } 5.ActionMode ActionMode am = startActionMode(new Callback() { @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { Log.e("tag", "onPrepareActionMode"); menu.findItem(R.id.action_settings).setVisible(false); return true; } @Override public void onDestroyActionMode(ActionMode mode) { Log.e("tag", "onDestroyActionMode"); } @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { Log.e("tag", "onCreateActionMode"); getMenuInflater().inflate(R.menu.menu1, menu); return true; } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { Log.e("tag", "onActionItemClicked"); if (item.getItemId() == R.id.action_settings1) { am.finish(); } return false; } }); 在onPrepareActionMode中,我们也可以根据需要控制菜单项的显示;其它的一些点击事件等等和前面讲的ActionBar的操作相同;
6。。。未完待续 |
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来自: dmw_zgl > 《ActionBar》