Android: 自定义Tab样式

1.制作4个9patch的tab样式，可参考android默认的资源

tab_unselected.9.png    tab_selected.9.png   tab_press.9.png   tab_focus.9.png

 

这4个资源分别代表Tab的4种状态。

 

2.定义Tab的selector样式（就叫它tab_indicator.xml好了），将其放入drawable文件夹下，代码如下：

  <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <!-- Non focused states --> <item android:state_focused="false" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/tab_unselected" /> <item android:state_focused="false" android:state_selected="true" android:state_pressed="false" android:drawable="@drawable/tab_selected" /> <!-- Focused states --> <item android:state_focused="true" android:state_selected="false" android:state_pressed="false" android:drawable="@drawable/tab_focus" /> <item android:state_focused="true" android:state_selected="true" android:state_pressed="false" android:drawable="@drawable/tab_focus" /> <!-- Pressed --> <item android:state_pressed="true" android:drawable="@drawable/tab_press" /> </selector>

 

3.编写indicator的布局文件（不妨也叫tab_indicator.xml），将其放入layout文件夹下，代码如下：

   <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="0dip" android:layout_height="64dip" android:layout_weight="1" android:layout_marginLeft="-3dip" android:layout_marginRight="-3dip" android:orientation="vertical" android:background="@drawable/tab_indicator"> <ImageView android:id="@+id/icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" /> <TextView android:id="@+id/title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" style="?android:attr/tabWidgetStyle" mce_style="?android:attr/tabWidgetStyle" /> 

 

4.接下来就是在TabActivity中使用我们自己编写的Tab样式了：

   // 首先获取TabWidget mTabHost = getTabHost(); LinearLayout ll = (LinearLayout)mTabHost.getChildAt(0); TabWidget tw = (TabWidget)ll.getChildAt(0);

 

    然后用类似如下代码创建TabSpec，就大功告成了。

   RelativeLayout tabIndicator1 = (RelativeLayout) LayoutInflater.from(this).inflate(R.layout.tab_indicator, tw, false); TextView tvTab1 = (TextView)tabIndicator1.getChildAt(1); tvTab1.setText("tab1"); mTabHot = mTabHost.newTabSpec("TAB_1") .setIndicator(tabIndicator1) .setContent(contentIntent);