Tab

public class MyTab extends TabActivity implements OnTabChangeListener {

	private TabHost myTabhost;
	protected int myMenuSettingTag=0;
	protected Menu myMenu;
	private static final int myMenuResources[] = { R.menu.a_menu,
		R.menu.b_menu, R.menu.c_menu};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		myTabhost=this.getTabHost();
		//get Tabhost
		LayoutInflater.from(this).inflate(R.layout.main, myTabhost.getTabContentView(), true);
		myTabhost.setBackgroundColor(Color.argb(150, 22, 70, 150));
		
		myTabhost
				.addTab(myTabhost.newTabSpec("One")// make a new Tab
						.setIndicator("A",
								getResources().getDrawable(R.drawable.gimp))
						// set the Title and Icon
						.setContent(R.id.widget_layout_Blue));
		// set the layout

		myTabhost
				.addTab(myTabhost.newTabSpec("Two")// make a new Tab
						.setIndicator("B",
								getResources().getDrawable(R.drawable.mumule))
						// set the Title and Icon
						.setContent(R.id.widget_layout_green));
		// set the layout

		myTabhost
				.addTab(myTabhost.newTabSpec("Three")// make a new Tab
						.setIndicator("C",
								getResources().getDrawable(R.drawable.notepad))
						// set the Title and Icon
						.setContent(R.id.widget_layout_red));
		// set the layout
		
		myTabhost.setOnTabChangedListener(this);
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {//这里对应，点击一下tab,然后点击menu按钮，出现不同tab对应不同菜单的效果
		// TODO Auto-generated method stub
		// Hold on to this
		myMenu = menu;
		myMenu.clear();//清空MENU菜单
		// Inflate the currently selected menu XML resource.
		MenuInflater inflater = getMenuInflater();        
        //从TabActivity这里获取一个MENU过滤器
		switch (myMenuSettingTag) {
		case 1:
			inflater.inflate(myMenuResources[0], menu);
            //动态加入数组中对应的XML MENU菜单
			break;
		case 2:
			inflater.inflate(myMenuResources[1], menu);
			break;
		case 3:
			inflater.inflate(myMenuResources[2], menu);
			break;
		default:
			inflater.inflate(myMenuResources[0], menu);
			break;
		}
		return super.onCreateOptionsMenu(menu);
	}
	
	@Override
	public void onTabChanged(String tagString) {
		// TODO Auto-generated method stub
		if (tagString.equals("One")) {
			myMenuSettingTag = 1;
		}
		if (tagString.equals("Two")) {
			myMenuSettingTag = 2;
		}
		if (tagString.equals("Three")) {
			myMenuSettingTag = 3;
		}
		if (myMenu != null) {
			onCreateOptionsMenu(myMenu);
		}
	}
}