Android TabHost Summary

TabHost is the container of the entire Tab, which consists of TabWidget and FrameLayout. TabWidget is the label of each tab, and FrameLayout is the tab content.

1. If we use extends TabAcitivty, like ListActivity, TabHost must be set to @ android: id/tabhost
2. You must set the android: id to @ android: id/tabs for TabWidget.
3. For FrameLayout, you must set android: id to @ android: id/tabcontent.
4. Refer to here: aspx "> http://blog.csdn.net/flowingflying/archive/2011/04/06/6304289.aspx

First, customize an xml file:
Java code
<? 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">
<LinearLayout
Android: orientation = "vertical"
Android: layout_width = "fill_parent"
Android: layout_height = "fill_parent">
<FrameLayout
Android: id = "@ android: id/tabcontent"
Android: layout_width = "fill_parent"
Android: layout_height = "fill_parent"
Android: layout_weight = "1.0"
Android: paddingBottom = "53px"/>
<TabWidget
Android: id = "@ android: id/tabs"
Android: layout_alignParentBottom = "true"
Android: layout_width = "fill_parent"
Android: layout_height = "50px"
Android: visibility = "gone"
Android: layout_weight = "0.0"/>
<RadioGroup
Android: gravity = "center_vertical"
Android: orientation = "horizontal"
Android: id = "@ + id/main_radio"
Android: background = "@ drawable/radiogroup_background"
Android: layout_width = "fill_parent"
Android: layout_height = "50dip"
Android: layout_gravity = "bottom">
<RadioButton
Android: id = "@ + id/main_index_button"
Android: layout_marginTop = "1.0dip"
Android: layout_marginRight = "5dip"
Android: text = "@ string/main_name"
Android: drawableTop = "@ drawable/unistall"
Style = "@ style/main_tab_bottom"
Android: background = "@ drawable/radio_bg"/>
<RadioButton
Android: id = "@ + id/main_running_button"
Android: layout_marginTop = "1.0dip"
Android: layout_marginRight = "5dip"
Android: text = "@ string/run_manager_name"
Android: drawableTop = "@ drawable/unistall"
Style = "@ style/main_tab_bottom"
Android: background = "@ drawable/radio_bg"/>
<RadioButton
Android: id = "@ + id/main_uninstall_button"
Android: layout_marginTop = "1.0dip"
Android: text = "@ string/uninstall_manager_name"
Android: drawableTop = "@ drawable/unistall"
Style = "@ style/main_tab_bottom"
Android: background = "@ drawable/radio_bg"/>
</RadioGroup>
</LinearLayout>
</TabHost>

To display the tabHost at the bottom, set layout_gravity of RadioGroup to bottom, and set layout_weight of FrameLayout to 1, so that the RadioGroup can be stretched to the bottom. Style = "@ style/main_tab_bottom" defines the style file.

Next, initialize and add the tabhost in the activity:
Java code
TabHost = (TabHost) findViewById (android. R. id. tabhost );
TabHost. addTab (Constant. tabHost. newTabSpec ("Main ")
. SetIndicator (getString (R. string. main_name), null)
. SetContent (new Intent (this, Main. class )));
TabHost. addTab (Constant. tabHost. newTabSpec ("RunManager ")
. SetIndicator (getString (R. string. run_manager_name), null)
. SetContent (new Intent (this, RunManager. class )));
TabHost. addTab (Constant. tabHost. newTabSpec ("UninstallManager ")
. SetIndicator (getString (R. string. uninstall_manager_name), null)
. SetContent (new Intent (this, UninstallManager. class )));

Initialize each RadioButton and add setOnCheck to it