Android user interface-widget-tab Tab

To use a tab:
1. Use framelayout in the layout file to list the tab component and the content component in the tab.

2. The activity must inherit tabactivity.

3. Call the gettabhost () method of tabactivity to obtain the tabhost object.

4. Use tabhost to create a tab.

 

/Chapter04_ui_tab01/src/COM/Amaker/test/mainactivity. Java

Code

  Package  Com. Amaker. test;

  Import  Android. App. tabactivity;
  Import  Android. OS. Bundle;
 Import  Android. View. layoutinflater;
  Import  Android. View. window;
  Import  Android. View. windowmanager;
  Import  Android. widget. tabhost;
  Import  Android. widget. Toast;
  Import  Android. widget. tabhost. ontabchangelistener;

  Public    Class  Mainactivity  Extends  Tabactivity {
@ Override
  Public     Void  Oncreate (bundle savedinstancestate ){
  Super  . Oncreate (savedinstancestate );

  /*  Requestwindowfeature (window. feature_no_title );
Getwindow (). setflags (windowmanager. layoutparams. flag_fullscreen,
Windowmanager. layoutparams. flag_fullscreen ); */  

Tabhost th  =  Gettabhost ();

Layoutinflater. From (  This  ). Inflate (R. layout. Main, Th. gettabcontentview (),  True  );

Th. addtab (Th. newtabspec (  "  All  "  ). Setindicator (  "  All call records  " ). Setcontent (R. Id. textview01 ));
Th. addtab (Th. newtabspec (  "  OK  "  ). Setindicator (  "  Received call  "  ). Setcontent (R. Id. textview02 ));
Th. addtab (Th. newtabspec (  "  Cancel  "  ). Setindicator (  "  Missed call "  ). Setcontent (R. Id. textview03 ));


Th. setontabchangedlistener (
  New  Ontabchangelistener (){
@ Override
  Public     Void  Ontabchanged (string Tabid ){
Toast. maketext (mainactivity.  This  , Tabid, Toast. length_long). Show ();
}
}
);



}
} 

 

/Chapter04_ui_tab01/RES/layout/Main. xml

Code

  <?  XML version = "1.0" encoding = "UTF-8"  ?>  

  <  Framelayout  Xmlns: Android  = "Http://schemas.android.com/apk/res/android"  
Android: ID  = "@ + ID/framelayout01"   
Android: layout_width = "Wrap_content"   
Android: layout_height  = "Wrap_content"  >  

  <  Textview
  Android: ID  = "@ + ID/textview01"   
Android: layout_width  = "Wrap_content"   
Android: layout_height  = "Wrap_content"   
Android: Text = "All call records"  > </  Textview  >  

  <  Textview
  Android: ID  = "@ + ID/textview02"   
Android: layout_width  = "Wrap_content"   
Android: layout_height  = "Wrap_content"   
Android: Text  = "Incoming calls" > </  Textview  >  

  <  Textview
  Android: ID  = "@ + ID/textview03"   
Android: layout_width  = "Wrap_content"   
Android: layout_height  = "Wrap_content"   
Android: Text  = "Missed calls"  > </ Textview  >  

  </  Framelayout  >  


 

 

 

 

Implement the createtabcontent method of tabhost. tabcontentfactory to define the tab content.

/Chapter04_ui_tab02/src/COM/Amaker/test/mainactivity. Java

Code

  Package Com. Amaker. test;

  Import  Java. util. arraylist;
  Import  Java. util. List;

  Import  Android. App. tabactivity;
  Import  Android. OS. Bundle;
  Import  Android. View. view;
  Import  Android. widget. arrayadapter;
  Import Android. widget. listview;
  Import  Android. widget. tabhost;

  Public     Class  Mainactivity  Extends  Tabactivity  Implements  
Tabhost. tabcontentfactory {
  /**  Called when the activity is first created.  */ 
@ Override
  Public     Void  Oncreate (bundle savedinstancestate ){
  Super  . Oncreate (savedinstancestate );
Tabhost th  =  Gettabhost ();
Th. addtab (Th. newtabspec (  "  All  "  ). Setindicator (  "  All call records "  ). Setcontent (  This  ));
Th. addtab (Th. newtabspec (  "  OK  "  ). Setindicator (  "  Received call  "  ). Setcontent (  This  ));
Th
. Addtab (Th. newtabspec (  "  Cancel "  ). Setindicator (  "  Missed call  "  )
. Setcontent (  This  ));
}

  Public  View createtabcontent (string tag ){
Listview LV  =     New  Listview (  This );
List  <  String  >  List  =     New  Arraylist  <  String  >  ();
List. Add (TAG );
  If  (Tag. Equals (  "  All "  )){
List. Add (  "  Tom  "  );
List. Add (  "  Kite  "  );
List. Add (  "  Rose  "  );
}  Else     If (Tag. Equals (  "  OK  "  )){
List. Add (  "  Tom  "  );
List. Add (  "  Kite  "  );
}  Else  {
List. Add (  " Rose  "  );
}

Arrayadapter Adapter  =     New  Arrayadapter (  This  ,
Android. R. layout. simple_list_item_checked, list );
LV. setadapter (adapter );
  Return  LV;
}
} 

 

/Chapter04_ui_tab02/RES/layout/Main. xml

Code

  <?  XML version = "1.0" encoding = "UTF-8"  ?>  
  <  Linearlayout  Xmlns: Android  = "Http://schemas.android.com/apk/res/android"  
Android: Orientation  = "Vertical"  
Android: layout_width  = "Fill_parent" 
Android: layout_height  = "Fill_parent"  
  >  
  <  Textview
  Android: layout_width  = "Fill_parent"   
Android: layout_height  = "Wrap_content"   
Android: Text  = "@ String/hello"  
  /> 
  </  Linearlayout  >