<?xml version="1.0" encoding="utf-8"?><TabHost xmlns:android="http://schemas.android.com/apk/res/android"   android:id="@android:id/tabhost"   android:layout_width="fill_parent"   android:layout_height="fill_parent">    <LinearLayout      android:orientation="vertical"      android:layout_width="fill_parent"      android:layout_height="fill_parent">      <FrameLayout         android:id="@android:id/tabcontent"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_weight="1">      </FrameLayout>      <TabWidget         android:id="@android:id/tabs"         android:layout_width="fill_parent"         android:layout_alignParentBottom="true"         android:layout_height="wrap_content"/>    </LinearLayout></TabHost>

//记得先定义这几个变量private TabHost tabHost;private TabWidget tabWidget;Field mBottomLeftStrip;Field mBottomRightStrip;public TabHost makeTab(){        if(this.tabHost == null){                tabHost = (TabHost)findViewById(android.R.id.tabhost);                tabWidget = (TabWidget)findViewById(android.R.id.tabs);                tabHost.setup();                tabHost.bringToFront();                TabSpec nearby_tab = tabHost.newTabSpec("nearby_tab");                TabSpec history_tab = tabHost.newTabSpec("history_tab");                TabSpec about_tab = tabHost.newTabSpec("about_tab");                nearby_tab.setIndicator("first",getResources().getDrawable(R.drawable.first)).setContent(new Intent(this,first.class));                history_tab.setIndicator("second",getResources().getDrawable(R.drawable.second)).setContent(new Intent(this,second.class));                about_tab.setIndicator("third",getResources().getDrawable(R.drawable.third)).setContent(new Intent(this,third.class));                tabHost.addTab(nearby_tab);                tabHost.addTab(history_tab);                tabHost.addTab(about_tab);                if (Integer.valueOf(Build.VERSION.SDK) <= 7) {                        try {                                mBottomLeftStrip = tabWidget.getClass().getDeclaredField ("mBottomLeftStrip");                                mBottomRightStrip = tabWidget.getClass().getDeclaredField ("mBottomRightStrip");                                if(!mBottomLeftStrip.isAccessible()) {                                        mBottomLeftStrip.setAccessible(true);                                }                                if(!mBottomRightStrip.isAccessible()){                                        mBottomRightStrip.setAccessible(true);                                }                                mBottomLeftStrip.set(tabWidget, getResources().getDrawable (R.drawable.linee));                                mBottomRightStrip.set(tabWidget, getResources().getDrawable (R.drawable.linee));                        } catch (Exception e) {                                e.printStackTrace();                        }                } else {                        try {                                mBottomLeftStrip = tabWidget.getClass().getDeclaredField("mLeftStrip");                                mBottomRightStrip = tabWidget.getClass().getDeclaredField("mRightStrip");                                if (!mBottomLeftStrip.isAccessible()) {                                        mBottomLeftStrip.setAccessible(true);                                }                                if (!mBottomRightStrip.isAccessible()) {                                        mBottomRightStrip.setAccessible(true);                                }                                mBottomLeftStrip.set(tabWidget, getResources().getDrawable(R.drawable.linee));                                mBottomRightStrip.set(tabWidget, getResources().getDrawable(R.drawable.linee));                        } catch (Exception e) {                                // TODO Auto-generated catch block                                e.printStackTrace();                        }                }                for (int i =0; i <tabWidget.getChildCount(); i++) {                        final TextView tv = (TextView) tabWidget.getChildAt(i).findViewById(android.R.id.title);                        tv.setTextColor(Color.WHITE);                        View vvv = tabWidget.getChildAt(i);                        if(tabHost.getCurrentTab()==i){                                vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.focus));                        }                        else {                                vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.unfocus));                        }                }                tabHost.setOnTabChangedListener(new OnTabChangeListener(){                        @Override                        public void onTabChanged(String tabId) {                        // TODO Auto-generated method stub                        for (int i =0; i < tabWidget.getChildCount(); i++) {                                View vvv = tabWidget.getChildAt(i);                                if(tabHost.getCurrentTab()==i){                                        vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.focus));                                }                                else {                                        vvv.setBackgroundDrawable(getResources().getDrawable(R.drawable.unfocus));                                }                        }                        }                });        }        else{                return tabHost;        }        return null;}