How to add two buttons to the UINavigation bar title view - iphone

Question

can any body help me how to add two buttons to the navigation title view by using the title view property. I tried but, able to add only one button by using the following code.
UIView *customView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
customView.backgroundColor = [UIColor redColor];
UIButton *b1 = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
UIButton *b2 = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
[b1 setTitle:#"Hai" forState:UIControlStateNormal];
[b2 setTitle:#"Hello" forState:UIControlStateNormal];
[customView insertSubview:b1 atIndex:0];
[customView insertSubview:b2 atIndex:1];
self.navigationItem.titleView = customView;

Answer 1

use this code:
UIView *customView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 44)];
customView.backgroundColor = [UIColor redColor];
UIButton *b1 = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
UIButton *b2 = [[UIButton alloc] initWithFrame:CGRectMake(50, 0, 50, 50)];
[b1 setTitle:#"Hai" forState:UIControlStateNormal];
[b2 setTitle:#"Hello" forState:UIControlStateNormal];
[customView insertSubview:b1 atIndex:0];
[customView insertSubview:b2 atIndex:1];
self.navigationItem.titleView = customView;
Outputs:

Answer 2

It's because you have added the same frame for both Buttons. So, the Buttons are actually overlapped. You should use this code instead :
UIButton *b1=[[UIButton alloc]initWithFrame:CGRectMake(0, 0, 50, 50)];
UIButton *b2=[[UIButton alloc]initWithFrame:CGRectMake(60, 0, 50, 50)];
Then you can simply add these buttons to your custom view.
[cusotmView addSubView:b1];
[cusotmView addSubView:b2];
Reason for Error :
You can't directly add UIButtons. You need to wrap them as UIBarButtonItems first.
Sample Code :
UIBarButtonItem *btn1 = [[UIBarButtonItem alloc] initWithCustomView:b1];
UIBarButtonItem *btn2 = [[UIBarButtonItem alloc] initWithCustomView:b2];
[cusotmView addSubView:btn1];
[cusotmView addSubView:btn2];