How can i offset UIButton image inside UIBarButtonItem on navBar?

Here is the code i am using to insert a custom UIBarButtonItem as the leftButton on my navbar. The issue is that the button is too close to the left edge and i cant figure out how to indent it a little without using another image with padding on the left?

UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
btn.imageEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);
[btn setBackgroundImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];
self.myBtn = btn;
[btn release];

UIBarButtonItem *barBtn = [[UIBarButtonItem alloc] initWithCustomView:self.myBtn];
self.myBarBtn = barBtn;
self.myBarBtn.imageInsets = UIEdgeInsetsMake(0, 5, 0, 0);
[self.navigationItem setLeftBarButtonItem:self.myBarBtn animated:YES];
[barBtn release];

I've tried adjusting the frame, edgeInsets, all without any luck. The barButtonItem is still too close to the left edge. Is there an开发者_JAVA百科y way to offset the image for the button?

Thx

    UIImage *buttonImage = [UIImage imageNamed:@"Close.png"];
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setImage:buttonImage forState:UIControlStateNormal];
    button.imageEdgeInsets = UIEdgeInsetsMake(0, -40, 0, 0);
    button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);

    [button addTarget:self action:@selector(donePressed:) forControlEvents:UIControlEventTouchUpInside];

    //create a UIBarButtonItem with the button as a custom view
    UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
    self.navigationItem.leftBarButtonItem = customBarItem;

there is the custom left or right button with swift language

let buttonEdit: UIButton = UIButton.buttonWithType(UIButtonType.Custom) as UIButton
buttonEdit.frame = CGRectMake(0, 0, 40, 40)
buttonEdit.setImage(UIImage(named:"nav-right-Y.png"), forState: UIControlState.Normal)
buttonEdit.addTarget(self, action: "rightNavItemEditClick", forControlEvents: UIControlEvents.TouchUpInside)
var rightBarButtonItemEdit: UIBarButtonItem = UIBarButtonItem(customView: buttonEdit)
self.navigationItem.rightBarButtonItem = rightBarButtonItemEdit