Sami Sami - 1 year ago 73
iOS Question

how to show back button on navigation bar?

I was practicing an application with navigation bar. I used UIBarButton to go to the next screen from the main screen.

UIButton *moveLeft = [UIButton buttonWithType:UIButtonTypeCustom];

[moveLeft setTitle:@"Next Screen" forState:UIControlStateNormal];
moveLeft.titleLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size:12.0f];
[moveLeft.layer setCornerRadius:4.0f];
[moveLeft.layer setBorderWidth:1.0f];
[moveLeft.layer setBorderColor: [[UIColor redColor] CGColor]];
moveLeft.frame=CGRectMake(200, 100.0, 90.0, 30.0);
[moveLeft setTitleColor:[UIColor greenColor] forState:UIControlStateNormal];

[moveLeft addTarget:self action:@selector(moveToNext) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem* barbutton= [[UIBarButtonItem alloc] initWithCustomView:moveLeft];

self.navigationItem.rightBarButtonItem = barbutton;

But now when the second screen appears there is no navigation bar.
Here are the screen shots of the app

main screen

Second Screen

i tried UIBarButton for back also but still navigation bar is not coming on the second screen.

UIBarButtonItem *back = [[UIBarButtonItem alloc] initWithTitle:@"Back"
[[self navigationItem] setBackBarButtonItem:back];

My question how do i show the back button the second screen?? i am not making any custom button but the default is also not coming automatically.
Please guide me.

Answer Source

From your comments, you are presenting the next view controller, instead of this

[self presentViewController:secondScreen animated:YES completion:nil];   

Do like this

[self.navigationController pushViewController:secondScreen  animated:YES]  


Instead of adding subView to the window, you should set the rootViewController of the window which is the recommended way. So change

[self.window addSubview:[navControll view]];


self.window.rootViewController = navControll;
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