iphone - How to reset all tableView data and arrays when click of UIButton? -

i have 1 tabbarcontroller have login , complete tab. want click on logout button in logintab, data , tableview in complete tab reset. used code not work:

in completetab.m:

-(void) viewdidload {     temp = [[nsmutablearray alloc] init];     iduploadarray= [[nsmutablearray alloc] init];     filecompletedarray = [[nsmutablearray alloc] init];     diffarr= [[nsmutablearray alloc] init];      _tableview = [[uitableview alloc] initwithframe:self.view.bounds];     tabledata = [[nsarray alloc] initwithobjects:filecompletedarray,nil];     // [_tableview setallowsselection:yes];     //tableview.datasource = self;     // [self.view addsubview:tableview];      // [self parsexmlfile:@"x"];      nsurl *url1 = [nsurl urlwithstring:@"server.com"];      afhttpclient *httpclient = [[afhttpclient alloc] initwithbaseurl: url1] ;          ....         temp = [filecompletedarray mutablecopy];          _tableview.datasource = self;         _tableview.delegate=self;          [self.view addsubview:_tableview];         }                                       failure:^(afhttprequestoperation *operation, nserror *error) {                                           nslog(@"error: %@", error);//: %@",  operation.responsestring);                                        }      ];     [httpclient enqueuehttprequestoperation:operation];  }  -(void) resetall {     [temp removeallobjects];     [filecompletedarray removeallobjects];     [diffarr removeallobjects];     [_tableview reloaddata]; } 

in logintab.m:

- (ibaction)logoutbutton:(id)sender {      login = false;     username.hidden = no;     pass.hidden = no;      loginbutton.hidden = no;     logoutbutton.hidden = yes;      //make arrays reset     username.text =@"";     pass.text = @"";     [completeview resetall];  } 

i debug: when click on logout button,it called resetall() function each variable 0x000000. cannot reset data , reload tableview. can me? thanks

since logout button in logintab, doesnot have reference completetab. need keep completetab reference in app. best choice in appdelegate. on logout button click, take instance , reset data.

keep completab view controller instance in appdelegate this

@property (nonatomic, retain) uiviewcontroller *completetab;  self.completetab = \\your complete tab viewcontroller instance.     

then on logout button click

[(appdelegate *)[[uiapplication sharedapplication] delegate].complettab resetall] 

hope helps.