CODEWITHSUNDEEP
iosobjective-c
thisguy
thisguy

Reputation: 71

Programmatically add a back button to a UINavigationBar?

I am using the following code to achieve a navigation bar in my app. (my app was crashing when I used a push segue so I need a modal segue meaning the nav bar is hidden after the modal segue is called)

UINavigationBar *navbar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)];
//do something like background color, title, etc you self
[self.view addSubview:navbar];

Does any one know any methods I can use with the above code to achieve back button functionality in the nav bar??

Upvotes: 4

Views: 9991

Answers (5)

Nick Kanellopoulos
Nick Kanellopoulos

Reputation: 185

Regarding the back button, the proper way is not to create your own.

The UINavigationItem class has proper support for this:

  • func setHidesBackButton(_:animated:)
  • var leftItemsSupplementBackButton: Bool

So, if you want to add a custom button on the left side, just set leftItemsSupplementBackButton to true.

Or call

self.navigationItem.setHidesBackButton(false, animated:false)

Upvotes: 1

Gaurav Patel
Gaurav Patel

Reputation: 957

Use below code to add back button on left side 

   UINavigationBar *navbar = [[UINavigationBar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)];
//do something like background color, title, etc you self
[self.view addSubview:navbar];

UINavigationItem *item = [[UINavigationItem alloc]
                               init];
navbar.items= @[item];
UIBarButtonItem *backButton = [[UIBarButtonItem alloc]
                               initWithTitle:@"Back"
                               style:UIBarButtonItemStyleBordered
                               target:self
                               action:@selector(backBtnClicked:)];
item.leftBarButtonItem = backButton;

Upvotes: 4

Allen
Allen

Reputation: 6882

BackButton is better than LeftButton I think:

UIBarButtonItem *backBtn = [[UIBarButtonItem alloc] init];
[desVC.navigationItem setBackBarButtonItem:backBtn];

Upvotes: 2

Ashish Kakkad
Ashish Kakkad

Reputation: 23882

Add Back Button With Image :

UIButton *backButton = [[UIButton alloc] initWithFrame: CGRectMake(0, 0, 70.0f, 21.0f)];
UIImage *backImage = [UIImage imageNamed:@"backBtn"];
[backButton setImage:backImage  forState:UIControlStateNormal];
[backButton setTitleEdgeInsets:UIEdgeInsetsMake(10.0, 10.0, 10.0, 0.0)];
[backButton setTitle:@"Back" forState:UIControlStateNormal];
[backButton addTarget:self action:@selector(backButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *backButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];

UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
[negativeSpacer setWidth:-15];

self.navigationItem.leftBarButtonItems = [NSArray arrayWithObjects:negativeSpacer,backButtonItem,nil];

Upvotes: 1

poojathorat
poojathorat

Reputation: 1220

Use below code to add back button on left side of navigation bar.Add UIBarButtonItem on Navigation bar.

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] 
                           initWithTitle:@"Back"                                            
                           style:UIBarButtonItemStyleBordered 
                           target:self 
                           action:@selector(backBtnClicked:)];
self.navigationItem.leftBarButtonItem = backButton;

Upvotes: 4

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