ios - MBProgress HUD method return value -

so i've implemented mbprogresshud im trying line of code call makepost method boolean , if method posted correctly returns yes , if not no

[hud showwhileexecuting:@selector(makepost:) ontarget:self withobject:@"1" animated:yes]; 

if return value no i'd show alert

uialertview* cerror = [[uialertview alloc]initwithtitle:@"error try later!" message:@"post error" delegate:self cancelbuttontitle:nil otherbuttontitles:@"ok", nil]; [cerror show]; 

you can use method:

/**  * shows hud while block executing on background queue, hides hud.  */ - (void)showanimated:(bool)animated whileexecutingblock:(dispatch_block_t)block completionblock:(mbprogresshudcompletionblock)completion;   

follow comments in code:

- (ibaction)buttonclicked:(id)sender {     // setup our alert use uialertcontroller instead of deprecated uialertview      self.alertcontroller = [uialertcontroller alertcontrollerwithtitle: @"alert"                                                            message: @"hey ok ?"                                                     preferredstyle: uialertcontrollerstylealert];   // store result of method "makepost" lowercase ;)     __block bool result;    // setup hud     mbprogresshud *hud = [mbprogresshud showhudaddedto:self.view animated:yes];     hud.mode = mbprogresshudmodeannulardeterminate;     hud.labeltext = @"loading";      [hud showanimated:yes whileexecutingblock:^{      result =  [self makepost];     } completionblock:^{          if (result)         {             nslog(@"ok");         }         else         {               [self presentviewcontroller: self.alertcontroller animated: true  completion: nil];         }     }];  }