Go to Android tabwidget (switch card)

The tab is similar to the phone book interface. To achieve this effect, you must first know the tabhost, which is a container used to store multiple tab labels, each tab can correspond to its own layout. For example, the tab layout in the phone book is a linear layout that uses tabhost. First, you must use the gettabhost method to obtain the tabhost object, the addtab method is used to add a tab to tabhost. Of course, each tab generates an event during switchover. to capture this event, you need to set the event listening setontabchangedlistener for tabactivity. Below is a small example: tabtest. java view plaincopy to clipboardprint? Package Org. hualang. tab; import android. app. activity; import android. app. tabactivity; import android. graphics. color; import android. OS. bundle; import android. widget. tabhost; import android. widget. toast; import android. widget. tabhost. ontabchangelistener; public class tabtest extends tabactivity {/** called when the activity is first created. */tabhost; @ override public void oncreate (bundl E savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); // obtain the tabhost object tabhost = gettabhost (); // Add a label for the tabhost // create a newtabspec (newtabspec) // set its label and Icon (setindicator) // set content (setcontent) tabhost. addtab (tabhost. newtabspec ("tab1 "). setindicator ("Tab 1", getresources (). getdrawable (R. drawable. img1 )). setcontent (R. id. text1); tabhost. addtab (tabhost. newtabspec ("tab2 "). setin Dicator ("Tab 2", getresources (). getdrawable (R. drawable. img2 )). setcontent (R. id. text2); tabhost. addtab (tabhost. newtabspec ("tab3 "). setindicator ("tab 3", getresources (). getdrawable (R. drawable. img3 )). setcontent (R. id. text3); // set the background color of tabhost // tabhost. setbackgroundcolor (color. argb (70,150, 22,); // sets the tabhost background image resource tabhost. setbackgroundresource (R. drawable. bg0); // set the label tabhost currently displayed. setcurrenttab (0 ); // Tag switching event processing, setontabchangedlistener tabhost. setontabchangedlistener (New ontabchangelistener () {public void ontabchanged (string Tabid) {Toast = toast. maketext (getapplicationcontext (), "now" + Tabid + "tag", toast. length_short); toast. show () ;}}) ;}} main. XML <? 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"> <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"> <textview Android: Id = "@ + ID/text1" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: TEXT = "Tab 1"/> <textview Android: Id = "@ + ID/text2" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: TEXT = "Tab 2"/> <textview Android: Id = "@ + ID/text3" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: TEXT = "tab 3"/> </framelayout> </linearlayout> </tabhost>