防止工具栏项目图标在iOS中居中

// 创建自定义视图
let customToolbar = UIView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: 44))

// 设置自定义视图背景色和阴影等样式
customToolbar.backgroundColor = UIColor.white
customToolbar.layer.shadowColor = UIColor.lightGray.cgColor
customToolbar.layer.shadowOpacity = 1.0
customToolbar.layer.shadowOffset = CGSize(width: 0, height: 2)

// 创建工具栏项目图标
let itemImageView = UIImageView(frame: CGRect(x: 10, y: 10, width: 24, height: 24))
itemImageView.image = UIImage(named: "your_icon")

// 创建工具栏项目标题
let itemLabel = UILabel(frame: CGRect(x: 44, y: 10, width: view.frame.width - 88, height: 24))
itemLabel.text = "Your Title"
itemLabel.textAlignment = .center

// 将工具栏项目图标和标题添加到自定义视图中
customToolbar.addSubview(itemImageView)
customToolbar.addSubview(itemLabel)

// 替代原有的工具栏
viewController.navigationController?.setToolbarHidden(false, animated: false)
viewController.navigationController?.toolbar.addSubview(customToolbar)
viewController.navigationController?.toolbar.isTranslucent = false