java - intent does not launch any activity -

in %mainactivity have

protected void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          intent intent = new intent(mainactivity.this,                     loginsignupactivity.class);         startactivity(intent);          ....     } 

in fact, intent wrapped authentication check debug deleted it, method doesn't launch loginsignupactivity. ?

edit:

here's entire oncreate method

protected void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         intent intent = new intent(mainactivity.this,                 loginsignupactivity.class);         startactivity(intent);          setactionbarlistnavigation();         setupdrawer();         setupcontainer();     } 

mainactivity extends customactivity (which lods data asyncloader) , last activity inherits fragmentactivity , has oncreate method

protected void oncreate(bundle savedinstancestate)     {         super.oncreate(savedinstancestate);         theme = getapptheme();         setupactionbar();     } 

with

protected void setupactionbar()     {         getactionbar().setdisplayhomeasupenabled(true);         getactionbar().sethomebuttonenabled(true);          getactionbar().setbackgrounddrawable(getresources().getdrawable(theme));     } 

at last

add: startactivity(intent);

intent intent = new intent(this, loginsignupactivity.class); startactivity(intent); 

and add loginsignupactivity manifest.xml

 <activity             android:name=".loginsignupactivity"             android:label="login" >