如何在UBarButtonItem navBar內抵消UIButton圖像？

Question

這裏是我用來插入一個自定義的UIBarButtonItem作爲leftbarutton在我的導航欄上的代碼。問題是，按鈕太靠近左邊緣，我不知道如何縮小它，而不使用左側填充的其他圖像？

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]; 

我試着調整框架，edgeInsets，都沒有任何運氣。 barButtonItem仍然靠近左邊緣。有什麼辦法來抵消按鈕的圖像？

THX

Answer 1

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; 

Answer 2

有自定義左或與SWIFT語言右鍵

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