public class MainActivity extends TabActivity {

    TabHost tabHost;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        tabHost = getTabHost();
        setTabs();
        tabHost.setCurrentTab(0);
    }

    private void setTabs() {
        addTab("Home", R.drawable.tab_home, HomeActivity.class);
        addTab("Chat", R.drawable.tab_chat, ChatActivity.class);
    }

    private void addTab(String labelId, int drawableId, Class<?> c) {
        TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
        View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_indicator, getTabWidget(), false);
        TextView title = (TextView) tabIndicator.findViewById(R.id.title);
        title.setText(labelId);
        ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
        icon.setImageResource(drawableId);

        spec.setIndicator(tabIndicator);
        spec.setContent(new Intent(this, c));
        tabHost.addTab(spec);
    }

}

　... >
    
        
            
            
            
            
        
    

　　　　　　：
   >
    　　　　　　：
       />
    　　　　　　：
        android:textColor="@color/tab_text"   <-- ③
       />

    android:id="@+id/ibHome"
    android:layout_width="70sp"
    android:layout_height="70sp"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:background="@null"
    android:src="@drawable/camera" />

ImageButton ib = (ImageButton) findViewById(R.id.ibHome);
ib.setOnClickListener(new OnClickListener() {
   //...
});

addTab("", R.drawable.tab_home, HomeActivity.class);