UILalbel
//注意书写的规范 在等号前后空一格
let testlabel:UILabel = UILabel(frame: CGRect(x: 50, y: 150, width: 100, height: 30))
self.view.addSubview(testlabel)
testlabel.text = "纯代码创建的"
testlabel.font = UIFont.systemFont(ofSize: 14)
testlabel.numberOfLines = 0
testlabel.textColor = UIColor.red
testlabel.backgroundColor = UIColor.gray
testlabel.textAlignment = .center
从上面看，其实相对于oc，它的属性都没有发生变化，只不过是写完发生了改变。在下面的UIButton imageview uitextview等等中是类似的情况
UIButton
let testbutton:UIButton = UIButton(type: UIButton.ButtonType.custom)
testbutton.frame = CGRect(x: 50, y: 200, width: 200, height: 30)
testbutton.setTitle("存代码创建按钮", for: UIControl.State.normal)
//设置字体
testbutton.setTitleColor(UIColor.orange, for: .normal)
testbutton.backgroundColor = UIColor.gray
testbutton.titleLabel?.font=UIFont.systemFont(ofSize: 13)
// testbutton.layer.cornerRadius = 5.0
// testbutton.layer.masksToBounds = true
self.view.addSubview(testbutton)
testbutton.addTarget(self, action:#selector(btnclick(button:)), for: .touchUpInside)
//设置某几个角为圆角
let shape:CAShapeLayer = CAShapeLayer()
let bepath:UIBezierPath = UIBezierPath(roundedRect: testbutton.bounds, byRoundingCorners: UIRectCorner(rawValue: UIRectCorner.topLeft.rawValue | UIRectCorner.bottomLeft.rawValue) , cornerRadii: CGSize(width: 5, height: 5));
UIColor.black.setStroke();
shape.path = bepath.cgPath;
testbutton.layer.mask = shape;
//@objc 1 允许这个函数"在运行时"通过oc的消息机制调用
// 2
@objc func btnclick(button:UIButton){
print("dianji 了按钮")
UIView.animate(withDuration: 3.0) {
self.bgview.backgroundColor = .purple
self.bgview.center.y = 400
} completion: { Bool in
print("动画完成")
}
}
imageview
//====================图片==============
let iconimage:UIImageView = UIImageView()
iconimage.image = UIImage(named: "gender_male")
iconimage.frame = CGRect(x: 50, y: 250, width: 80, height: 80)
self.view.addSubview(iconimage)
iconimage.layer.masksToBounds = true
iconimage.layer.cornerRadius = 5.0
iconimage.contentMode = .scaleAspectFill
iconimage.layer.borderWidth = 2.0
iconimage.layer.borderColor = UIColor.orange.cgColor
iconimage.isUserInteractionEnabled = true
let tapges:UITapGestureRecognizer = UITapGestureRecognizer.init(target: self, action: #selector(tapbtnclick(tap:)))
iconimage.addGestureRecognizer(tapges)
@objc func tapbtnclick(tap:UITapGestureRecognizer){
print("手势点击")
}
uiview
//+++++++++++++++++++uiview视图+++++++++++++
self.bgview.frame=CGRect(x: 50, y: 340, width: 200, height: 50)
self.bgview.backgroundColor = .orange
self.bgview.layer.cornerRadius = 5.0
self.view.addSubview(self.bgview)
uitextfield
let testTextField:UITextField = UITextField.init()
testTextField.frame = CGRect(x: 40, y: 400, width: 200, height: 30)
testTextField.borderStyle = .roundedRect
testTextField.placeholder = "请输入手机号"
//返回键盘
testTextField.keyboardType = .numberPad
testTextField.textAlignment = .left
self.view.addSubview(testTextField)
testTextField.becomeFirstResponder()
//键盘返回键
testTextField.returnKeyType = .done
//遵守协议
testTextField.delegate = self;
//监测text内容变化
testTextField.addTarget(self, action: #selector(textchange(textfiled:)), for: UIControl.Event.editingChanged)
//键盘监听
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(noti:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboradhide(noti:)), name: UIResponder.keyboardDidHideNotification, object: nil)
//协议方法
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
return true
}
func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
return true
}
@objc func keyboardWillShow(noti:NSNotification){
print("键盘弹出")
}
@objc func keyboradhide(noti:NSNotification){
print("键盘收起")
}
@objc func textchange(textfiled:UITextField){
//可选型
print("输入的是：\(textfiled.text)")
}
uitextview
//++++++++++++++++++++++++uitextview ++++++++++++
let contentTextView:UITextView = UITextView.init()
contentTextView.frame = CGRect(x: 50, y: 440, width: 100, height: 70)
contentTextView.layer.masksToBounds = true
contentTextView.layer.cornerRadius = 5.0
contentTextView.keyboardType = .default
self.view.addSubview(contentTextView)
contentTextView.textColor = .orange
contentTextView.backgroundColor = .gray
contentTextView.textAlignment = .left
contentTextView.font = .systemFont(ofSize: 14)
contentTextView.isSelectable = true
contentTextView.delegate = self
//+++++++++++++textview delegate ++++++++++++
func textViewDidChange(_ textView: UITextView) {
print(textView.text)
}
scrollview
let bannerscrollview:UIScrollView = UIScrollView.init()
bannerscrollview.backgroundColor = .red
bannerscrollview.frame = CGRect(x: 50, y: 520, width: 250, height: 100)
bannerscrollview.contentSize = CGSize(width: 250*3, height: 100)
bannerscrollview.isPagingEnabled = true
self.view.addSubview(bannerscrollview)
//回弹设置
bannerscrollview.bouncesZoom = false
bannerscrollview.showsHorizontalScrollIndicator = false
bannerscrollview.showsVerticalScrollIndicator = false
bannerscrollview.bounces = false
//点击设备状态栏是否回到顶部
bannerscrollview.scrollsToTop = true
//=========scrollview delegate
func scrollViewDidScroll(_ scrollView: UIScrollView) {
}
uitableview
import UIKit
class ListTableViewVC: UIViewController, UITableViewDelegate,UITableViewDataSource {
var names = ["A","C","D","F"]
var listtableview : UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
self.listtableview = UITableView.init(frame: CGRect(x: 0, y: 0, width: self.view.bounds.size.width, height: self.view.bounds.size.height), style: .plain)
self.listtableview?.delegate = self
self.listtableview?.dataSource = self
self.view.addSubview(self.listtableview)
self.listtableview.register(UINib.init(nibName: "ListTabelCell", bundle: nil), forCellReuseIdentifier: "ListTabelCell")
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 5
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:ListTabelCell? = (tableView.dequeueReusableCell(withIdentifier: "ListTabelCell") as! ListTabelCell)
cell?.namelabel.text = "\(indexPath.row)"
return cell!
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 50
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
}
相同的collctionview也是类似的。相较于oc只是书写的格式不同了，协议方法的名字没有发生改变
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