在activity中添加TabHost有两种方式,第一种为继承TabActivity,然后从布局文件中加载各个tab的内容即可。
private TabHost myTabHost;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TabHost host = getTabHost();
LayoutInflater.from(this).inflate(R.layout.tabs,
host.getTabContentView(), true);
host.addTab(host
.newTabSpec("t1")
.setIndicator("t1", getResources().getDrawable(R.drawable.icon))
.setContent(R.id.sll01));
host.addTab(host.newTabSpec("t2").setIndicator("t2")
.setContent(R.id.sll02));
host.addTab(host.newTabSpec("t3").setIndicator("t3")
.setContent(R.id.sll03));
setContentView(host); }
布局文件:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:id="@+id/sll01" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:gravity="center_horizontal"
android:orientation="vertical">
<ImageView android:src="@drawable/t1" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="@+id/v1"></ImageView>
</LinearLayout>
<LinearLayout android:id="@+id/sll02" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:gravity="center_horizontal"
android:orientation="vertical">
<ImageView android:src="@drawable/t2" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="@+id/v2"></ImageView>
</LinearLayout>
<LinearLayout android:id="@+id/sll03" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:gravity="center_horizontal"
android:orientation="vertical">
<ImageView android:src="@drawable/t3" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="@+id/v3"></ImageView>
</LinearLayout>
</FrameLayout>
第二种:继承普通Activity,<TabWidget>标签id必须为tabs、<FrameLayout>标签id必须为tabcontent.这个方式在通过findViewById获得TabHost之后,必须要调用setup方法。
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+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">
<TabWidget android:id="@android:id/tabs"
android:layout_width="fill_parent" android:layout_height="wrap_content" />
<FrameLayout android:id="@android:id/tabcontent"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<LinearLayout android:id="@+id/sll01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal"
android:orientation="vertical">
<ImageView android:src="@drawable/t1"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/v1"></ImageView>
</LinearLayout>
<LinearLayout android:id="@+id/sll02"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:gravity="center_horizontal" android:orientation="vertical">
<ImageView android:src="@drawable/t2"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/v2"></ImageView>
</LinearLayout>
<LinearLayout android:id="@+id/sll03"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:gravity="center_horizontal" android:orientation="vertical">
<ImageView android:src="@drawable/t3"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:id="@+id/v3"></ImageView>
</LinearLayout>
</FrameLayout>
</LinearLayout>
</TabHost>
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tabs);
TabHost host = (TabHost) findViewById(R.id.tabhost);
host.setup();
host.addTab(host
.newTabSpec("t1")
.setIndicator("t1", getResources().getDrawable(R.drawable.icon))
.setContent(R.id.sll01));
host.addTab(host.newTabSpec("t2").setIndicator("t2")
.setContent(R.id.sll02));
host.addTab(host.newTabSpec("t3").setIndicator("t3")
.setContent(R.id.sll03));
下面介绍一下修改TabHost的默认样式。
转自:http://www.hijava.org/android/modify-tabhost-default-style
TabHost是Android提供的一个容器组件,利用它可以轻松地实现TAB界面,如下图所示:
但很多时候,默认的TAB样式并不符合软件的整体风格,这时候该怎么办呢?其实,我们可以编写XML对其样式进行修改。下面修改后的效果图:
1. TabHost布局文件 main.xml
|
<TabHost
android:id="@+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">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="30dip"
android:background="#a0a0a0"
android:layout_weight="0" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
<ListView
android:id="@+id/user_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="@drawable/divider_line"
android:cacheColorHint="#00000000" />
<ListView
android:id="@+id/article_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="@drawable/divider_line"
android:cacheColorHint="#00000000" />
<ListView
android:id="@+id/feed_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="@drawable/divider_line"
android:cacheColorHint="#00000000" />
<ListView
android:id="@+id/book_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="@drawable/divider_line"
android:cacheColorHint="#00000000" />
</FrameLayout>
</LinearLayout>
</TabHost> |
FrameLayout里有四个ListView 分别对应用户、文章、频道、图书。
TabWidget和FrameLayout的ID不能自己定义修改。
2. Activity后台代码
|
RelativeLayout articleTab = (RelativeLayout) LayoutInflater.from(this).inflate(R.layout.minitab, null);
TextView articleTabLabel = (TextView) articleTab.findViewById(R.id.tab_label);
articleTabLabel.setText("文章");
RelativeLayout feedTab = (RelativeLayout) LayoutInflater.from(this).inflate(R.layout.minitab, null);
TextView feedTabLabel = (TextView) feedTab.findViewById(R.id.tab_label);
feedTabLabel.setText("频道");
RelativeLayout bookTab = (RelativeLayout) LayoutInflater.from(this).inflate(R.layout.minitab, null);
TextView bookTabLabel = (TextView) bookTab.findViewById(R.id.tab_label);
bookTabLabel.setText("图书");
TabHost tabHost = (TabHost) findViewById(R.id.tabhost);
tabHost.setup();
tabHost.addTab(tabHost.newTabSpec("user").setIndicator(userTab).setContent(R.id.user_list));
tabHost.addTab(tabHost.newTabSpec("article").setIndicator(articleTab).setContent(R.id.article_list));
tabHost.addTab(tabHost.newTabSpec("feed").setIndicator(feedTab).setContent(R.id.feed_list));
tabHost.addTab(tabHost.newTabSpec("book").setIndicator(bookTab).setContent(R.id.book_list)); |
TabHost创建出来以后,必须先setup一下,tabHost.setup();
setIndicator方法设置的View其实就对应了TAB中的一个个选项卡,它们都是通过一个叫minitab的布局文件inflate出来的。
3. 选项卡布局文件minitab.xml
|
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingLeft="5dip"
android:paddingRight="5dip">
<TextView android:id="@+id/tab_label"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:textColor="#000000"
android:textStyle="bold"
android:background="@drawable/minitab" />
</RelativeLayout> |
drawable/minitab是一个selector,指定了Tab选项卡的背景颜色。
4. selector文件 minitab.xml
|
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android"
>
<item
android:state_selected="false"
android:drawable="@drawable/minitab_unselected"
>
</item>
<item
android:state_selected="true"
android:drawable="@drawable/minitab_default"
>
</item>
</selector> |
minitab_unselected是一浅蓝色背景图片
minitab_default是一白色背景图片