带有[self.view removeFromSuperview]的touchUpInside Back按钮时，上一个视图无响应

Question

I am new to iPhone Programming.

Basically I have a MFSideMenuViewController with settings viewController as rightSideViewController.

Settings ViewController is with UITableView and when I tap at any Index of tableview its loading another VC as [rootViewController.view addSubView:VC]; with implemented back button code - [self.view removeFromSuperview]; until now its working fine

SettingsVC.h
//UITableView Delegate method
if(indexPath.row==1){
VC=[[UIStoryboard storyboardWithName:@"Main_iPhone" bundle:nil] instantiateViewControllerWithIdentifier:@"vcStoryBoardIdentifier"];
[VC.view setFrame:[[APP_DELEGATE window] frame]];
[[[[APP_DELEGATE window] rootViewController] view] addSubview:VC.view];
}

In this VC I have a tableview. when I tap at any index path.row it is loading another VC named anotherVC as subview to VC [VC.view addSubView:anotherVC];

    VC.m
    - (void)viewDidLoad {
            [super viewDidLoad];
            // Do any additional setup after loading the view.

            [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reloadTblPS) name:@"VCTblReload" object:nil];
        }

-(void)reloadTblPS{
   [VCTableView reloadData];
}

    //UITableview DataSource method
    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
                static NSString *CellIdentifier = @"Cell";
                    UITableViewCell *cell = (UITableViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
                    if(cell == nil)
                    {
                        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
                     if(indexPath.row == 0)
                        {
                button = [UIButton buttonWithType:UIButtonTypeCustom];
                [button setImage:img1 forState:UIControlStateNormal];
                [button setImage:img2 forState:UIControlStateHighlighted];
                [button setFrame:CGRectMake(220,10,60,20)];
                [button addTarget:self action:@selector(openAnotherVc:) forControlEvents:UIControlEventTouchUpInside];
                            [cell.contentView addSubview:button];
                }
                }
                return cell;

                }
    -(void)openAnotherVc:(id)sender{

            anotherVC = [[UIStoryboard storyboardWithName:@"Main_iPhone" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:@"anotherVCStoryBoardID"];
                    [[anotherVC view] setFrame:[[APP_DELEGATE window] frame]];
                    [self.view addSubview:[anotherVC view]];

            }
    -(IBAction)VCcancelBtn:(id)sender{
                [self.view removeFromSuperview];
            //working fine
            }

this anotherVC also containing a Cancel button with `[anotherVC.view removeFromSuperView];

anotherVC.m
-(IBAction)anotherVCcancelBtn:(id)sender{
  [self.view removeFromSuperView];
    [[NSNotificationCenter defaultCenter] postNotificationName:@"VCTblReload" object:nil];
}

My problems are 2 here 1. When I click on cancel button of anotherVC it is going to VC screen but the VC is unresponsive 2. the tableView present in VC is not reloading even I have used notifications and [tableView reloadData];

It would be great with explanation for your answer Thank you

Answer 1

try this:-

 if (indexPath.row == 1)
    {
        UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
        ContactUsVC *vc = [mainStoryboard instantiateViewControllerWithIdentifier:@"ContactUsVC"];
        [self presentViewController:vc animated:NO completion:nil];
    }

and in this method also

-(void)openAnotherVc:(id)sender
{

            UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
            ContactUsVC *vc = [mainStoryboard instantiateViewControllerWithIdentifier:@"ContactUsVC"];
            [self presentViewController:vc animated:NO completion:nil];
        }      

Answer 2

Use Navigation Controller to do this kind of stuff. then Push Viewcontroller instead of add to window and pop Viewcontroller instead of remove. add and remove are good practise for UIView . when it's comes to Viewcontrollers then you should use NavigationController to manage navigation stack. it will resolve your all issue i think. hope this will help.:)

Update : And if you are using storyboard then you can use segue also. it make whole flow little bit easier. google it that how to use navigation controller with storyboard.

Answer 3

Answer for my question is

SettingsVC.h
//UITableView Delegate method
if(indexPath.row==1){
VC=[[UIStoryboard storyboardWithName:@"Main_iPhone" bundle:nil] instantiateViewControllerWithIdentifier:@"vcStoryBoardIdentifier"];
[VC.view setFrame:[[APP_DELEGATE window] frame]];
[[[[APP_DELEGATE window] rootViewController] view] addSubview:VC.view];
//[[self presentViewController:VC animated:NO completion:nil];
}


 VC.m
- (void)viewDidLoad {
            [super viewDidLoad];
            // Do any additional setup after loading the view.

            [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reloadTblPS) name:@"VCTblReload" object:nil];
        }

-(void)reloadTblPS{
   [VCTableView reloadData];
}

    //UITableview DataSource method
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
                static NSString *CellIdentifier = @"Cell";
                    UITableViewCell *cell = (UITableViewCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
                    if(cell == nil)
                    {
                        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
                     if(indexPath.row == 0)
                        {
                button = [UIButton buttonWithType:UIButtonTypeCustom];
                [button setImage:img1 forState:UIControlStateNormal];
                [button setImage:img2 forState:UIControlStateHighlighted];
                [button setFrame:CGRectMake(220,10,60,20)];
                [button addTarget:self action:@selector(openAnotherVc:) forControlEvents:UIControlEventTouchUpInside];
                            [cell.contentView addSubview:button];
                }
                }
                return cell;

                }
-(void)openAnotherVc:(id)sender{

            anotherVC = [[UIStoryboard storyboardWithName:@"Main_iPhone" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:@"anotherVCStoryBoardID"];
                    [[anotherVC view] setFrame:[[APP_DELEGATE window] frame]];
                    [[self presentViewController:anotherVC animated:NO completion:nil];]

            }
-(IBAction)VCcancelBtn:(id)sender{
                [self.view removeFromSuperview];
//[self dismissViewControllerAnimated:NO completion:nil];
            //working fine
            }


anotherVC.m
-(IBAction)anotherVCcancelBtn:(id)sender{
  [self dismissViewControllerAnimated:NO completion:nil];
    [[NSNotificationCenter defaultCenter] postNotificationName:@"VCTblReload" object:nil];
}