Add button to navigationbar programmatically

Question

Hi I need to set the button on right side, in navigation bar, programatically , so that if I press the button I will perform some actions. I have created the navigation bar, programatically by;

navBar=[[UINavigationBar alloc]initWithFrame:CGRectMake(0,0,320,44) ]; 

Similarly, I need to add the button, on the right side of this navigation bar. For that I used,

1.  

    UIView* container = [[UIView alloc] init];      // create a button and add it to the container     UIButton* button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 130, 44.01)];     [container addSubview:button];     [button release];      // add another button     button = [[UIButton alloc] initWithFrame:CGRectMake(160, 0, 50, 44.01)];     [container addSubview:button];     [button release];      // now create a Bar button item     UIBarButtonItem* item = [[UIBarButtonItem alloc] initWithCustomView:container];      // set the nav bar's right button item     self.navigationItem.rightBarButtonItem = item;     [item release]; 

2.  

    UIImage *im;     im=[UIImage imageNamed:@"back.png"];     [button setImage:im forState:UIControlStateNormal];     [im release];     backButton = [[UIBarButtonItem alloc] initWithCustomView:button];            [backButton setImageInsets:UIEdgeInsetsMake(0, -10,5, 5)];     [self.navigationItem setRightBarButtonItem:backButton]; 

3.  

    UIBarButtonItem *refreshItem = [[UIBarButtonItem alloc] initWithTitle:@"button"               style:UIBarButtonItemStylePlain target:self action:@selector(refreshLogsAction:)];     self.navigationItem.rightBarButtonItem = refreshItem;      [refreshItem release]; 

I tried all these ways, but none is displaying the button on the right hand side.

Answer 1

Inside my UIViewController derived class, I am using the following inside viewDidLoad:

UIBarButtonItem *flipButton = [[UIBarButtonItem alloc]                                 initWithTitle:@"Flip"                                                                            style:UIBarButtonItemStyleBordered                                 target:self                                 action:@selector(flipView:)]; self.navigationItem.rightBarButtonItem = flipButton; [flipButton release]; 

This adds a button to the right hand side with the title Flip, which calls the method:

-(IBAction)flipView

This looks very much like you #3, but it is working within my code.

Answer 2

UIImage* image3 = [UIImage imageNamed:@"back_button.png"]; CGRect frameimg = CGRectMake(15,5, 25,25);  UIButton *someButton = [[UIButton alloc] initWithFrame:frameimg]; [someButton setBackgroundImage:image3 forState:UIControlStateNormal]; [someButton addTarget:self action:@selector(Back_btn:)      forControlEvents:UIControlEventTouchUpInside]; [someButton setShowsTouchWhenHighlighted:YES];  UIBarButtonItem *mailbutton =[[UIBarButtonItem alloc] initWithCustomView:someButton]; self.navigationItem.leftBarButtonItem =mailbutton; [someButton release]; 

///// called event

-(IBAction)Back_btn:(id)sender {     //Your code here } 

SWIFT:

var image3 = UIImage(named: "back_button.png") var frameimg = CGRect(x: 15, y: 5, width: 25, height: 25)  var someButton = UIButton(frame: frameimg) someButton.setBackgroundImage(image3, for: .normal) someButton.addTarget(self, action: Selector("Back_btn:"), for: .touchUpInside) someButton.showsTouchWhenHighlighted = true  var mailbutton = UIBarButtonItem(customView: someButton) navigationItem?.leftBarButtonItem = mailbutton  func back_btn(_ sender: Any) {     //Your code here }