摘要：```swift
import UIKit
class ViewController: UIViewController{ override func viewDidLoad() { super.viewDidLoad() let view = UIView(frame: CGRect(x: 150, y: 250, width: 100, height: ...
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摘要：```swift
import UIKit
class ViewController: UIViewController{ override func viewDidLoad() { super.viewDidLoad() //创建UIView并设置其位置 let view = UIView(frame: CGRect(x: 150, y: ...
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摘要：```swift
import UIKit
class ViewController: UIViewController{ var activityIndicator:UIActivityIndicatorView! override func viewDidLoad() { super.viewDidLoad() //设置环形滚动条的样式 ...
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摘要：预置样式：25个样式 Custom：默认样式 Flexible Space：自动伸缩的空白占位符 Fixed Space：固定宽度的占位元素 Add：“+”加号样式 Edit：Edit文字样式 Done：Done文字样式 Cancel：Cancel文字样式 Save：Save文字样式 Undo：Un
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摘要：```swift
import UIKit
class ViewController: UIViewController{ override func viewDidLoad() { super.viewDidLoad() //SwipeGestureRecognizer：滑动手势 let swipe = UISwipeGestureReco...
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摘要：创建UISecrollView 实现页面滚动切换 ViewController： 创建两个swift文件，命名为 FirstViewControll，SeconfViewController： 两个文件只有背景颜色设置不一样
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摘要：```swift
import UIKit class ViewController: UIViewController{ //创建一个UIStackView类型的变量 var stackView:UIStackView! override func viewDidLoad() { super.viewDidLoad() //创建三个Vie...
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摘要：添加AlertController 添加文本输入框 自动消失的提示框 UIAlertExtension: 封装 创建一个swift文件，命名为UIAlertExtension ViewController.swift:
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摘要：```swift
import UIKit class ViewController: UIViewController,UIPickerViewDataSource,UIPickerViewDelegate { var pickerView:UIPickerView! override func viewDidLoad() { super.viewDidLoad...
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摘要：```swift
import UIKit
var imageView:UIImageView!
class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() //创建Slider let slider = UISlider...
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摘要：```swift
import UIKit
var imageView:UIImageView!
class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() //创建ProgressView let progressVie...
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摘要：```swift
import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() let items = ["optionA","optionB","optionC"] let segmented ...
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摘要：```swift
import UIKit
var imageView:UIImageView!
class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() //创建ImageView imageView = UIImag...
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摘要：```swift
import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() //创建UISWitch(Switch无需设置大小) let uiSwitch = UISwitch(frame: ...
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摘要：```swift
import UIKit class ViewController: UIViewController,UITextFieldDelegate { var textField:UITextField!//声明一个UItextField类型变量 override func viewDidLoad() { super.viewDidLoad() ...
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摘要：```swift
import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() //创建UITextView let textView = UITextView(frame: CGRect(x:...
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