Question

我有一个由Google设计素材框架创建的自定义工具栏。另外，我想在工具栏中实现3个按钮（左，中，右）。但是，我只能找到.rightControl和.leftControl。它只能将按钮放在右侧或左侧。 我想在中心实施一个。我怎么能以编程方式做到这一点？

  private var toolbar: Toolbar!


private func prepareToolbar() {
toolbar = Toolbar()

toolbar.width = 400
toolbar.height = 80.0




let image: UIImage? = MaterialIcon.cm.settings
let logoBtn = UIImage(named: "buttonlogo") as UIImage?

// Menu button.
let menuButton: IconButton = IconButton()
menuButton.pulseColor = MaterialColor.white
menuButton.tintColor = MaterialColor.white
menuButton.setImage(image, forState: .Normal)
menuButton.setImage(image, forState: .Highlighted)

let logoButton: IconButton = IconButton()
logoButton.setImage(logoBtn, forState: .Normal)

  let searchButton: IconButton = IconButton()
  searchButton.pulseColor = MaterialColor.white
  searchButton.tintColor = MaterialColor.white
  searchButton.setImage(image, forState: .Normal)
  searchButton.setImage(image, forState: .Highlighted)


toolbar.rightControls = [logoButton]
//toolbar.rightControls = [searchButton]  <---------
toolbar.leftControls = [menuButton]


view.addSubview(toolbar)


 }

Answer 1

试试这个：

ViewController.swift

import UIKit
import Material

class ViewController: UIViewController {
/// Reference for containerView.
private var containerView: UIView!

/// Reference for Toolbar.
private var toolbar: Toolbar!

let addButton: IconButton = IconButton()

override func viewDidLoad() {
    super.viewDidLoad()
    prepareView()
    prepareContainerView()
    prepareToolbar()
}

/// General preparation statements.
private func prepareView() {
    view.backgroundColor = MaterialColor.white
}

/// Prepares the containerView.
private func prepareContainerView() {
    containerView = UIView()
    view.layout(containerView).edges(top: 100, left: 20, right: 20)
}

/// Prepares the toolbar
private func prepareToolbar() {
    toolbar = Toolbar()
    containerView.addSubview(toolbar)

    // Title label.
    toolbar.title = " "
    toolbar.titleLabel.textColor = MaterialColor.white
    toolbar.titleLabel.textAlignment = .Center

    // Detail label.
    //toolbar.detail = "Build Beautiful Software"
    //toolbar.detailLabel.textColor = MaterialColor.white

    var image: UIImage? = MaterialIcon.cm.menu

    // Menu button.
    let menuButton: IconButton = IconButton()
    menuButton.pulseColor = MaterialColor.white
    menuButton.tintColor = MaterialColor.white
    menuButton.setImage(image, forState: .Normal)
    menuButton.setImage(image, forState: .Highlighted)


    // Add button
    image = MaterialIcon.cm.add
    addButton.pulseColor = MaterialColor.white
    addButton.tintColor = MaterialColor.white
    addButton.setImage(image, forState: .Normal)
    addButton.setImage(image, forState: .Highlighted)
    addButton.center = toolbar.center

    let space = IconButton()
    space.userInteractionEnabled = false
    //spacd.pulseColor = UIColor

    // Search button.
    image = MaterialIcon.cm.search
    let searchButton: IconButton = IconButton()
    searchButton.pulseColor = MaterialColor.white
    searchButton.tintColor = MaterialColor.white
    searchButton.setImage(image, forState: .Normal)
    searchButton.setImage(image, forState: .Highlighted)

    /*
     To lighten the status bar - add the
     "View controller-based status bar appearance = NO"
     to your info.plist file and set the following property.
     */
    toolbar.backgroundColor = MaterialColor.blue.base
    toolbar.leftControls = [menuButton]
    toolbar.rightControls = [searchButton]
    toolbar.addSubview(addButton)
    toolbar.layout(addButton).center()

    let gesture = UITapGestureRecognizer(target: self, action: #selector(toolBarTapGestureRecognizer))
    toolbar.addGestureRecognizer(gesture)
}

func toolBarTapGestureRecognizer(tapGestureRecognizer: UITapGestureRecognizer) {
    if (CGRectContainsPoint(addButton.bounds, tapGestureRecognizer.locationInView(addButton))) {
        addButton.pulse()
          NSLog("!!!!!!")
    }
}

}

<强>结果：

在自定义工具栏中快速定位按钮（Google设计素材）

1 个答案: