Custom Android TabHost Slow Fragments -


i use actionbarsherlock , slidingmenu.

my mainactivity not access db , no parsing of ever. static.

tabs generated dynamicly depending on "section" choose slidingmenu. after 2 click app becomes awefully slow.

below main view. 

    <tabhost         android:id="@android:id/tabhost"         android:layout_width="match_parent"         android:layout_height="match_parent" >          <linearlayout             android:layout_width="match_parent"             android:layout_height="match_parent"             android:orientation="vertical" >              <tabwidget                 android:id="@android:id/tabs"                 android:layout_width="match_parent"                 android:layout_height="wrap_content"                 android:orientation="horizontal" />              <framelayout                 android:id="@+id/content_frame"                 android:layout_width="match_parent"                 android:layout_height="match_parent"                 android:layout_weight="1"                 android:background="#0000ff" >             </framelayout>              <framelayout                 android:id="@android:id/tabcontent"                 android:layout_width="0dp"                 android:layout_height="0dp" >              </framelayout>          </linearlayout>     </tabhost>  </linearlayout>

the code used manage tabhost & fragments : 

public void selectpage(menupageitem page, page subnavigationpage) {     if (page == null || subnavigationpage == null             || (page.equals(selectedpage) && subnavigationpage.equals(selectedsubnavigation))) {         return;     }     log.d(tag, "show page: " + page.gettitle() + " / subnavigationpage: " + subnavigationpage.gettitle());      boolean needupdatetabui = !(page.equals(selectedpage));     selectedpage = page;     selectedsubnavigation = subnavigationpage;      // 1) manage tabhost     if (needupdatetabui) {         log.d(tag, "need update tab layout");         updatepagetabui();     }     // change selected tab     mtabhost.setcurrenttabbytag(selectedsubnavigation.gettitle());      // 2) change contentfragment     log.d(tag, "update fragment");     // todo: check current fragment not 1 ,     // call updatedata method     updatepagefragment();      // close sliding menu if opened     if (getslidingmenu().isshown()) {         handler h = new handler();          h.postdelayed(new runnable() {             public void run() {                 getslidingmenu().showcontent();             }         }, 50);     } }  private void updatepagetabui() {     if (selectedpage.getpages().size() > 1) {         // more 1 sub navigation -> show tab host         // mtabhost.setvisibility(view.visible);         mtabhost.setup();         mtabhost.clearalltabs();         int = 0;         (final page subnav : selectedpage.getpages()) {             log.d(tag, "add tab tag=" + subnav.gettitle() + " title=" + subnav.gettitle());             mtabhost.addtab(mtabhost.newtabspec(subnav.gettitle()).setindicator(subnav.gettitle())                     .setcontent(new emptytabfactory()));             mtabhost.gettabwidget().getchildat(i).setonclicklistener(new onclicklistener() {                 @override                 public void onclick(view v) {                     selectpage(selectedpage, subnav);                 }             });             i++;         }      } else {         // 1 sub navigation -> hide tab host         // mtabhost.setvisibility(view.gone);         mtabhost.setup();         mtabhost.clearalltabs();     }     mtabhost.requestlayout();     mtabhost.invalidate(); }  private void updatepagefragment() {     try {         pagefragment fragcontent = (pagefragment) selectedsubnavigation.getfragmentclass().newinstance();         fragcontent.setsubnavigationpage(selectedsubnavigation);         fragmenttransaction fragmenttransaction = getsupportfragmentmanager().begintransaction();         fragmenttransaction.replace(r.id.content_frame, fragcontent);         fragmenttransaction.commit();     } catch (instantiationexception e) {         e.printstacktrace();     } catch (illegalaccessexception e) {         e.printstacktrace();     } }

you keep entire work on uithread , therefore stumble upon slow response (for example 1 of reasons why forbidden on latest android os networking on ui thread). try changing concept little bit , tab creation in background on different thread. or @ least lock ui , show wait dialog when work in order user have proper ui experience.

hope helps , enjoy work.


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