［已解决］swift设置导航栏返回按钮的padding

希望都设置和头像的padding一致的10个point=20px

swift navigation bar back padding

iphone – Placing a custom view based UIBarButtonItem in the navigation bar without default horizontal padding – Stack Overflow

swift custom back button

uinavigationcontroller – Swift Custom Back Button and Destination – Stack Overflow

ios – Setting custom back button to look like default back button – Stack Overflow

然后用代码：

let backImage = UIImage(named: "navi_back")!

let backButton = UIButton(frame: CGRectMake(

(HeightNaviBar – backImage.size.height) / 2,

backImage.size.width,

HeightNaviBar

))

print("HeightNaviBar=\(HeightNaviBar)") //44.0

print("backButton.frame=\(backButton.frame)") //(10.0, 13.5, 9.0, 44.0)

backButton.setImage(backImage, forState: UIControlState.Normal)

backButton.addTarget(self, action: Selector("backButtonPressed:"), forControlEvents: UIControlEvents.TouchUpInside)

//for debug

backButton.backgroundColor = UIColor.greenColor()

let backNaviBtnItem:UIBarButtonItem = UIBarButtonItem(customView: backButton)

// let backNaviBtnItem:UIBarButtonItem = UIBarButtonItem(

// image: backImage,

// style: UIBarButtonItemStyle.Plain,

// target: self,

// action: nil

// )

self.navigationItem.setLeftBarButtonItem(backNaviBtnItem, animated: true)

结果还是：

很明显：

left bar的左边，始终有个固定的padding

需要去掉

搜：

ios swift navigation bar back button left padding

ios swift back button left padding

iphone – How to Edit Empty Spaces of Left, Right UIBarButtonItem in UINavigationBar [iOS 7] – Stack Overflow

最终用：

let backImage = UIImage(named: "navi_back")!

// let backButton = UIButton(frame: CGRectMake(

// 0,

// (HeightNaviBar – backImage.size.height) / 2,

// backImage.size.width,

// HeightNaviBar

// ))

// print("HeightNaviBar=\(HeightNaviBar)") //44.0

// print("backButton.frame=\(backButton.frame)") //(10.0, 13.5, 9.0, 44.0)

// backButton.setImage(backImage, forState: UIControlState.Normal)

// backButton.addTarget(self, action: Selector("backButtonPressed:"), forControlEvents: UIControlEvents.TouchUpInside)

// //for debug

// backButton.backgroundColor = UIColor.greenColor()

// let backNaviBtnItem:UIBarButtonItem = UIBarButtonItem(customView: backButton)

//// let backNaviBtnItem:UIBarButtonItem = UIBarButtonItem(

//// image: backImage,

//// style: UIBarButtonItemStyle.Plain,

//// target: self,

//// action: nil

//// )

// self.navigationItem.setLeftBarButtonItem(backNaviBtnItem, animated: true)

let backNaviBtnItem:UIBarButtonItem = UIBarButtonItem(

image: backImage,

style: UIBarButtonItemStyle.Plain,

target: self,

action: Selector("backButtonPressed:")

)

let negativeLefPadding = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FixedSpace, target: nil, action: nil)

negativeLefPadding.width = –6

self.navigationItem.setLeftBarButtonItems([negativeLefPadding, backNaviBtnItem], animated: true)

解决了问题：

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［已解决］swift设置导航栏返回按钮的padding

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