Button Text and Booleans (Simple Android App) -

i'm build fun facts app on android development track. decided take exploratory detour , try create basic introductory message user. changed facttextview text "you can click button below see new fact!" , changed showfactbutton text "try out!"

from there, changed final line onclick object (is object?) following:

public void onclick(view view) {             string fact = mfactbook.getfact();             // update label our dynamic fact             factlabel.settext(fact);             // set button text new fact prompt             showfactbutton.settext("show fun fact."); 

this seems work fine. however, feel "updating" button text same new string on every press isn't best practice, if easy , readable. tried add boolean check text of button, , update if has not been updated. i've come far:

view.onclicklistener listener = new view.onclicklistener() {         @override         public string launchtext = getresources().getstring(r.string.start_text);         public string nexttext = getresources().getstring(r.string.next_text);         public string buttontext = (string) showfactbutton.gettext();         public boolean updatelaunchtext() {             if (buttontext.equals(launchtext)) {                 buttontext.replaceall(launchtext, nexttext);                 return true;             }             else {                 return true;             }         }         public void onclick(view view) {             string fact = mfactbook.getfact();             // update label our dynamic fact             factlabel.settext(fact);         }     }; 

with following added strings.xml:

<string name="start_text">try out!</string> <string name="next_text">show fun fact!</string> 

no errors, button text stays on "try out!" i'm sure objects totally unnecessary compared first, working method scope of app, i'd still figure out since don't have idea i'm doing boolean.

questions: 1) missing in longer boolean approach? 2) what's actual efficient approach accomplish task?

did connect listener button object?without connection no logic applied button click.it goes this:

buttonname.setonclicklistener(...) 

you'd have initialize button object first though :)