android项目中碰到需要替换tabHost默认样式的情况,需要达到下图的效果:
为了做成这样的效果,花了些时间,这里做个笔记,给有需要的朋友。 步骤一:新建一个xml布局文件,命名main.xml 步骤二:在Activity中添加我们的tab 代码如下 步骤三:在createTabView方法中,我们载入了布局文件tab_indicator.xml,改布局很简单,就是放置一个带背景的布局,在布局中放一个textView用于显示tab标题,以下为该布局文件内容 步骤四:在上面的布局文件中我们把该布局的背景定义为chat_tab_selector,这里同样需要在drawable文件夹下新建chat_tab_selector.xml,内容很简单,就是做一个按下时的背景切换,内容如下: 里面做了两张图进行状态切换,这两张图同样放drawable下就可以了 至此,自定义tab的步骤就完成了。如果要做成更复杂的样式,大家可以在此基础上进行扩展
![](http://mmqzlj.blog.51cto.com/attachment/201108/155739903.jpg)
<? 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" android:background ="@color/white" > < LinearLayout android:orientation ="vertical" android:layout_width ="fill_parent" android:layout_height ="fill_parent" > < TabWidget android:id ="@android:id/tabs" android:layout_width ="fill_parent" android:layout_height ="wrap_content" android:gravity ="center_horizontal|center_vertical" /> < FrameLayout android:id ="@android:id/tabcontent" android:layout_width ="fill_parent" android:layout_height ="fill_parent" > </ FrameLayout > </ LinearLayout > </ TabHost >
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mTabHost = getTabHost(); Intent intent1 = new Intent(this,OfficialActivity.class); createTab("公共聊天室",intent1); Intent intent2 = new Intent(this, NearByActivity.class); createTab("周边",intent2); Intent intent3= new Intent(this, HistoryActivity.class); createTab("历史",intent3); mTabHost.setCurrentTab(1); } private void createTab(String text ,Intent intent){ mTabHost.addTab(mTabHost.newTabSpec(text).setIndicator(createTabView(text)).setContent(intent)); } private View createTabView(String text) { View view = LayoutInflater.from(this).inflate(R.layout.tab_indicator, null); TextView tv = (TextView) view.findViewById(R.id.tv_tab); tv.setText(text); return view; }
<? xml version ="1.0" encoding ="utf-8" ?> < LinearLayout xmlns:android ="http://schemas.android.com/apk/res/android" android:layout_height ="fill_parent" android:layout_width ="fill_parent" android:orientation ="vertical" android:gravity ="center" android:theme ="@android:style/Theme.NoTitleBar" android:background ="@drawable/chat_tab_selector" > < TextView android:id ="@+id/tv_tab" android:layout_width ="wrap_content" android:layout_height ="wrap_content" android:text ="tab1" android:textColor ="@color/white" /> </ LinearLayout >
<? xml version ="1.0" encoding ="utf-8" ?> < selector xmlns:android = "http://schemas.android.com/apk/res/android" > < item android:state_focused = "true" android:drawable = "@drawable/topbar_bg_down" /> < item android:state_selected = "true" android:drawable = "@drawable/topbar_bg_down" /> < item android:state_pressed = "true" android:drawable = "@drawable/topbar_bg_down" /> < item android:drawable = "@drawable/topbar_background" /> </ selector >