仿新浪微博带有加号Tab

<LinearLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

<FrameLayout
	android:id="@+id/realtabcontent"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1"/>

<FrameLayout
	android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white" >

<RelativeLayout
	android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="4dip">

<net.oschina.app.widget.MyFragmentTabHost
        android:id="@android:id/tabhost"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dip" />

<View
	android:layout_width="match_parent"
        android:layout_height="1px"
        android:background="#D6D6D6" />
</RelativeLayout>

<!-- 快速操作按钮-->

<ImageView
	android:id="@+id/quick_option_iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:contentDescription="@null"
        android:src="@drawable/btn_quickoption_selector" />
</FrameLayout>
</LinearLayout>
     
       
@Override
public void initView() {
        mDoubleClickExit = new DoubleClickExitHelper(this);
        mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
        mTitle = getTitle();

        // Set up the drawer.
        mNavigationDrawerFragment.setUp(R.id.navigation_drawer,
        (DrawerLayout) findViewById(R.id.drawer_layout));

        mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
        if (android.os.Build.VERSION.SDK_INT > 10) {
            mTabHost.getTabWidget().setShowDividers(0);
        }

        initTabs();

        // 中间按键图片触发
        mAddBt.setOnClickListener(this);
        mAddBt.setOnLongClickListener(new OnLongClickListener() {

            @Override
            public boolean onLongClick(View v) {
                startActivity(new Intent(MainActivity.this, NetSetupActivity.class));
                return true;
            }
        });

        mTabHost.setCurrentTab(0);
        mTabHost.setOnTabChangedListener(this);
}
    private void initTabs() {
        MainTab[] tabs = MainTab.values();
        final int size = tabs.length;
        for (int i = 0; i < size; i++) {
            MainTab mainTab = tabs[i];
            // Tab的tag
            TabSpec tab = mTabHost.newTabSpec(getString(mainTab.getResName()));
    
            // Tab的自定义布局view
            View indicator = LayoutInflater.from(getApplicationContext()).inflate(R.layout.tab_indicator, null);
            TextView title = (TextView) indicator.findViewById(R.id.tab_title);
            Drawable drawable = this.getResources().getDrawable(mainTab.getResIcon());
            title.setCompoundDrawablesWithIntrinsicBounds(null, drawable, null, null);
            if (i == 2) {
                indicator.setVisibility(View.INVISIBLE);
                mTabHost.setNoTabChangedTag(getString(mainTab.getResName()));
            }
            title.setText(getString(mainTab.getResName()));
            tab.setIndicator(indicator);
    
            tab.setContent(new TabContentFactory() {
    
                @Override
                public View createTabContent(String tag) {
                    return new View(MainActivity.this);
                }
            });
            mTabHost.addTab(tab, mainTab.getClz(), null);
     
            mTabHost.getTabWidget().getChildAt(i).setOnTouchListener(this);
        }
   }
    @Override
    public void onTabChanged(String tabId) {
        final int size = mTabHost.getTabWidget().getTabCount();
        for (int i = 0; i < size; i++) {
            View v = mTabHost.getTabWidget().getChildAt(i);
            if (i == mTabHost.getCurrentTab()) {
                v.setSelected(true);
            } else {
                v.setSelected(false);
            }
        }
   }
@Override
public boolean onTouch(View v, MotionEvent event) {
     super.onTouchEvent(event);
     boolean consumed = false;
     // use getTabHost().getCurrentTabView to decide if the current tab is touched again
     if (event.getAction() == MotionEvent.ACTION_DOWN && v.equals(mTabHost.getCurrentTabView())) {
     // use getTabHost().getCurrentView() to get a handle to the view which is displayed in the tab - and to get this views context
         Fragment currentFragment = getCurrentFragment();
         if (currentFragment != null && currentFragment instanceof OnTabReselectListener) {
         OnTabReselectListener listener = (OnTabReselectListener) currentFragment;
         // 回调当前页的刷新方法
         listener.onTabReselect();
         consumed = true;
         }
     }
     return consumed;
}    
    private Fragment getCurrentFragment() {
        return getSupportFragmentManager().findFragmentByTag(mTabHost.getCurrentTabTag());
    }
public enum MainTab {


	NEWS(0, R.string.main_tab_name_news, R.drawable.tab_icon_new,
			NewsViewPagerFragment.class),


	TWEET(1, R.string.main_tab_name_tweet, R.drawable.tab_icon_tweet,
			TweetsViewPagerFragment.class),


	QUICK(2, R.string.main_tab_name_quick, R.drawable.tab_icon_new,
			null),


	EXPLORE(3, R.string.main_tab_name_explore, R.drawable.tab_icon_explore,
			ExploreFragment.class),


	ME(4, R.string.main_tab_name_my, R.drawable.tab_icon_me,
			MyInformationFragment.class);


	private int idx;
	private int resName;
	private int resIcon;
	private Class<?> clz;


	private MainTab(int idx, int resName, int resIcon, Class<?> clz) {
		this.idx = idx;
		this.resName = resName;
		this.resIcon = resIcon;
		this.clz = clz;
	}
}