android - Google sign in,when i close my app it again shows Google Sign in page -

mainactivity

public class mainactivity extends appcompatactivity implements googleapiclient.connectioncallbacks ,googleapiclient.onconnectionfailedlistener,view.onclicklistener {      private signinbutton signinbutton;     private googleapiclient googleapiclient;     public static final string tag="mainactivity";     private static final int rc_sign_in=1;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);           googlesigninoptions googlesigninoptions=new googlesigninoptions                 .builder(googlesigninoptions.default_sign_in).requestemail().build();          googleapiclient=new googleapiclient.builder(this).enableautomanage(this,this)                 .addapi(auth.google_sign_in_api,googlesigninoptions).build();         signinbutton=(signinbutton)findviewbyid(r.id.mainactivitygooglesigninbutton);         signinbutton.setonclicklistener(this);        }      @override     public void onclick(view v) {         switch (v.getid()){             case r.id.mainactivitygooglesigninbutton:                 signin();                 break;         }     }      private void signin() {         intent intent=auth.googlesigninapi.getsigninintent(googleapiclient);         startactivityforresult(intent,rc_sign_in);     }       @override     public void onconnectionfailed(@nonnull connectionresult connectionresult) {         toast.maketext(getapplicationcontext(), "login failed", toast.length_short).show();     }      @override     protected void onactivityresult(int requestcode, int resultcode, intent data) {         super.onactivityresult(requestcode, resultcode, data);         if(requestcode==rc_sign_in){             googlesigninresult result=auth.googlesigninapi.getsigninresultfromintent(data);             handlesigninresult(result);         }     }      private void handlesigninresult(googlesigninresult result) {         if(result.issuccess()){             googlesigninaccount account=result.getsigninaccount();             intent intent=new intent(this,contactsactivity.class);             startactivity(intent);             finish();         }     }       @override     public void onconnected(@nullable bundle bundle) {         if (googleapiclient != null && googleapiclient.isconnected()) {             intent intent=new intent(this,contactsactivity.class);             startactivity(intent);             finish();         }     }      @override     public void onconnectionsuspended(int i) {      } } 

my mainactivity has signin option when open app , sign in takes me contactsactivity.now when close app , start again shows me mainactivity again want display contactsactivity directly.once user has signed in , if closes app want display contactsactivity directly please help.

save login stage in shared preference.

protected void oncreate(bundle savedinstancestate) { . . .   sharedpreferences sharedpreferences = getsharedpreferences("user_login_info",mode_private); if(sharedpreferences.getboolean(user_login,false)){         startactivity(new intent(this,contactsactivity.class));         finish();     }   }    private void handlesigninresult(googlesigninresult result) {     if(result.issuccess()){         googlesigninaccount account=result.getsigninaccount();         intent intent=new intent(this,contactsactivity.class);         sharedpreferences sharedpreferences = getsharedpreferences("user_login_info",mode_private);         editor = sharedpreferences.edit();         editor.putboolean("user_login",true); //saving user info         editor.commit();         startactivity(intent);         finish();     } } 

when user sign out clear shared preference value

sharedpreferences sharedpreferences = getsharedpreferences("user_login_info",mode_private); editor = sharedpreferences.edit(); editor.clear(); editor.commit();