我使用Swift创建了一个小样本项目。我创建了一个“MyCustomView”作为xib,其中包含label,button和imageView,如下面的代码所示:
import UIKit
@IBDesignable class MyCustomView: UIView {
@IBOutlet weak var lblName: UILabel!
@IBOutlet weak var btnClick: UIButton!
@IBOutlet weak var myImageView: UIImageView!
var view:UIView!
@IBInspectable
var mytitleLabelText: String? {
get {
return lblName.text
}
set(mytitleLabelText) {
lblName.text = mytitleLabelText
}
}
@IBInspectable
var myCustomImage:UIImage? {
get {
return myImageView.image
}
set(myCustomImage) {
myImageView.image = myCustomImage
}
}
override init(frame : CGRect)
{
super.init(frame: frame)
xibSetup()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
xibSetup()
}
func xibSetup()
{
view = loadViewFromNib()
view.frame = self.bounds
// not sure about this ?
view.autoresizingMask = [UIViewAutoresizing.FlexibleWidth, UIViewAutoresizing.FlexibleHeight]
addSubview(view)
}
func loadViewFromNib() -> UIView {
let bundle = NSBundle(forClass: self.dynamicType)
let nib = UINib(nibName: "MyCustomView", bundle: bundle)
let view = nib.instantiateWithOwner(self, options: nil)[0] as! UIView
return view
}
}
在StoryBoard中 - > ViewController添加了UIViewCollection,如下图所示。在这个viewcollection中,我需要橙色颜色单元格来包含我要在运行时加载的自定义xib。
我该如何实现这一目标?
Sandeep建议的新修改代码
// 1导入UIKit
class ViewController: UIViewController {
@IBOutlet weak var collectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
self.collectionView.register(UINib(nibName: "MyCustomView", bundle: nil), forCellWithReuseIdentifier: "myCell")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 7
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell : MyCustomView = collectionView.dequeueReusableCellWithReuseIdentifier("your_reusable_identifier", forIndexPath: indexPath) as! MyCustomView
cell.lblName.text = "MyNewName"
return cell
}
}
// 2导入UIKit
@IBDesignable class MyCustomView: UICollectionViewCell {
@IBOutlet weak var lblName: UILabel!
@IBOutlet weak var btnClick: UIButton!
@IBOutlet weak var myImageView: UIImageView!
var view:UIView!
@IBInspectable
var mytitleLabelText: String? {
get {
return lblName.text
}
set(mytitleLabelText) {
lblName.text = mytitleLabelText
}
}
@IBInspectable
var myCustomImage:UIImage? {
get {
return myImageView.image
}
set(myCustomImage) {
myImageView.image = myCustomImage
}
}
}
两者
这是你能做的,
MyCustomView
删除override init(frame : CGRect)
,required init?(coder aDecoder: NSCoder)
,func xibSetup()
,func loadViewFromNib() -> UIView
MyCustomView
self.collectionView.registerNib(UINib(nibName: "your_xib_name", bundle: nil), forCellWithReuseIdentifier: "your_reusable_identifier")
快乐的编码。搜索教程以便更好地理解。不能解释所有代表,因为我最终会在这里写博客。
快乐的编码
对于Swift 4.0
在viewDidLoad中:
let cell : MyCustomView = collectionView.dequeueReusableCellWithReuseIdentifier("your_reusable_identifier", forIndexPath: indexPath) as! MyCustomView
cell.lblName.text = "bla bla" //access your Cell's IBOutlets
return cell
在cellForItemAt indexPath中:
//custom collectionViewCell
mainCollectionView.register(UINib(nibName: "your_customcell_name", bundle: nil), forCellWithReuseIdentifier: "your_customcell_identifier")
并且不要忘记在xib部分为自定义单元格设置标识符。
如果您必须注册多个单元格,则采用一行方法。
let cell : <your_customcell_name> = mainCollectionView.dequeueReusableCell(withReuseIdentifier: "your_customcell_identifier", for: indexPath) as! <your_customcell_name>
如何使用的步骤
extension UICollectionViewCell {
static func register(for collectionView: UICollectionView) {
let cellName = String(describing: self)
let cellIdentifier = cellName + "Identifier"
let cellNib = UINib(nibName: String(describing: self), bundle: nil)
collectionView.register(cellNib, forCellWithReuseIdentifier: cellIdentifier)
}
}
,例如:"YourcellName" + "Identifier"
,如果您的单元名称是CustomCell。CustomCellIdentifier
对于ViewDidLoad中的Swift 4.2
CustomCell.register(for: collectionView)
在cellForItemAt indexPath中:
self.collectionView.register(UINib(nibName: "your_xib_name", bundle: nil), forCellWithReuseIdentifier: "your_reusable_identifier")
当然,正如@Raj Aryan所说:不要忘记在xib部分为自定义单元格设置标识符。