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.pngtab_press.9.pngtab_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);

原文链接