Android Activitygroup implemented Tabhost keep activity in its original state

When Tabhost is implemented with Activitygroup, the activity in TAB1 is reloaded when switching from TAB1 to TAB2 and back

public class Mainuiactivity extends activitygroup{private Context context=this; private tabhost mtabhost; private String Tab1= "Home"; Private String tab2= "collection"; Private String tab3= "3"; Private String tab4= "4"; Private String tab5= "more"; Define an array to hold the button picture private int mimageviewarray[] = {R.drawable.tab_home_btn,r.drawable.tab_message_btn,r.drawable.tab_ SELFINFO_BTN, R.drawable.tab_square_btn,r.drawable.tab_more_btn};//tab tab text Private String mtextviewarray[] = {TAB1 , TAB2, TAB3, TAB4, TAB5}; @Overrideprotected void OnCreate (Bundle savedinstancestate) {//TODO auto-generated method stubs Uper.oncreate (savedinstancestate); Setcontentview (R.layout.tab_main); mtabhost= (tabhost) findViewById ( R.ID.TABHOST1); Mtabhost.setup (); Mtabhost.setup (This.getlocalactivitymanager ()); Intent i1=new Intent (This, Mainactivity.class); Intent i_collect=new Intent (this,collectactivity.class);//intent i1=new Intent (This, Mainactivity.class);//intent i1=new Intent (this,mainactivity.class);//intent i1=new Intent (this,mainactiviTy.class) Mtabhost.addtab (Mtabhost.newtabspec (TAB1) setindicator (Gettabitemview (0)). SetContent (R.id.zhuye). SetContent (I1));///Note that this is Newtabspec (TAB2), each tab tab is written differently to save the original state Mtabhost.addtab (MTABHOST.NEWTABSPEC). Setindicator (Gettabitemview (1)). SetContent (R.id.zhuye2). SetContent (I_collect)); Mtabhost.addtab ( Mtabhost.newtabspec (TAB1). Setindicator (Gettabitemview (2)). SetContent (R.id.zhuye3). SetContent (I1)); Mtabhost.addtab (Mtabhost.newtabspec (TAB1). Setindicator (Gettabitemview (3)). SetContent (R.id.zhuye4). SetContent ( I1)); Mtabhost.addtab (Mtabhost.newtabspec (TAB1) Setindicator (Gettabitemview (4)). SetContent (R.id.zhuye5). SetContent (I1));} /** * give tab button settings icon and text */private view Gettabitemview (int index) {View view = Layoutinflater.from (context). Inflate ( R.layout.tab_item, NULL); ImageView ImageView = (ImageView) View.findviewbyid (R.id.tab_icon); Imageview.setimageresource (Mimageviewarray[index]); TextView TextView = (TextView) View.findviewbyid (r.id.tab_name); Textview.settext (Mtextviewarray[index]); return View;}        public static Intent Createintent (context context) {Intent i = new Intent (context, mainactivity.class);        I.addflags (Intent.flag_activity_clear_top);    return i; }}

The workaround is already written in the code above, which is to set a different tag for each tab tab