对于习惯了OC代码的程序员来说，swift的语法简直让人不能忍受，今天将一些常用的UI控件简单做了一下整理。
import UIKit
class ViewController : UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.whiteColor()
if self.title == "UILabel"
{
// Label
let label = UILabel(frame: self.view.bounds)
label.backgroundColor = UIColor.clearColor()
label.textAlignment = NSTextAlignment.Center
label.font = UIFont.systemFontOfSize(36)
label.text = "Hello, Swift"
self.view.addSubview(label)
}
else if self.title == "UIButton"
{
// Button
let button = UIButton(type: UIButtonType.System)
button.frame = CGRectMake(110, 120, 100, 50)
button.backgroundColor = UIColor.grayColor()
button.setTitleColor(UIColor.redColor(), forState: UIControlState.Normal)
button.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Highlighted)
button.setTitle("普通", forState: UIControlState.Normal)
button.setTitle("高亮", forState: UIControlState.Highlighted)
button.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)
button.tag = 100
self.view.addSubview(button)
}
else if self.title == "UIImageView"
{
let image = UIImage(named: "swift-hero.png")
let imageView = UIImageView(frame: CGRectMake((CGRectGetWidth(self.view.bounds) - image!.size.width) / 2.0, 120.0, image!.size.width, image!.size.height))
imageView.image = image
self.view.addSubview(imageView)
}
else if self.title == "UISlider"
{
let slider = UISlider(frame:CGRectMake(60, 120, 200, 30))
self.view.addSubview(slider)
}
else if self.title == "UIWebView"
{
let webView = UIWebView(frame:self.view.bounds)
let url = NSURL(string: "http://caipiao.m.taobao.com")
let request = NSURLRequest(URL: url!)
webView.loadRequest(request)
self.view.addSubview(webView)
}
else if self.title == "UISegmentedControl"
{
let segmentControl = UISegmentedControl(items:["A", "B", "C", "D"])
segmentControl.frame = CGRectMake(110, 120, 100, 30)
self.view.addSubview(segmentControl)
}
else if self.title == "UISwitch"
{
let switchControl = UISwitch(frame:CGRectMake(130, 120, 100, 30))
switchControl.on = true
self.view.addSubview(switchControl)
}
else if self.title == "UITextField"
{
let textField = UITextField(frame:CGRectMake(60, 120, 200, 30))
textField.backgroundColor = UIColor.lightGrayColor()
textField.placeholder = "请输入"
self.view.addSubview(textField)
}
else if self.title == "UIScrollView"
{
let scrollView = UIScrollView(frame:CGRectMake(60, 120, 200, 200))
scrollView.pagingEnabled = true
scrollView.showsVerticalScrollIndicator = false
self.view.addSubview(scrollView)
var fX: CGFloat = 0.0
for(var i = 0; i < 3; ++i)
{
let view = UIView(frame:CGRectMake(fX, 0, 200, 200))
fX += 200
view.backgroundColor = UIColor(red: CGFloat(100 * i) / 256, green: CGFloat(100 * i) / 256, blue: CGFloat(100 * i) / 256, alpha: 1)
// 这个地方因为swift对于类型的控制十分严格，颜色值采用的是CGFloat类型，但是i是int类型，所以需要强转
scrollView.addSubview(view)
}
scrollView.contentSize = CGSizeMake(3 * 200, 0)
self.view.addSubview(scrollView)
}
else if self.title == "UISearchBar"
{
let searchBar = UISearchBar(frame:CGRectMake(10.0, 120.0, 300.0, 30.0))
searchBar.showsCancelButton = true
searchBar.searchBarStyle = UISearchBarStyle.Minimal // Default, Prominent, Minimal
self.view.addSubview(searchBar)
}
else if self.title == "UIPageControl"
{
// PageControl
let pageControl = UIPageControl(frame:CGRectMake(60.0, 120.0, 200.0, 200.0))
pageControl.numberOfPages = 5
pageControl.currentPageIndicatorTintColor = UIColor.blackColor()
pageControl.pageIndicatorTintColor = UIColor.redColor()
self.view.addSubview(pageControl)
}
else if self.title == "UIDatePicker"
{
let datePicker = UIDatePicker(frame:CGRectMake(0.0, 120.0, 200.0, 200.0))
self.view.addSubview(datePicker)
}
else if self.title == "UIPickerView"
{
let pickerView = UIPickerView(frame:CGRectMake(10.0, 120.0, 300.0, 200.0))
pickerView.delegate = self
pickerView.dataSource = self
self.view.addSubview(pickerView)
}
else if self.title == "UIProgressView"
{
let progressView = UIProgressView(progressViewStyle:UIProgressViewStyle.Default)
progressView.frame = CGRectMake(10.0, 120.0, 300.0, 30.0)
progressView.setProgress(0.8, animated: true)
self.view.addSubview(progressView)
}
else if self.title == "UITextView"
{
let textView = UITextView(frame:CGRectMake(10.0, 120.0, 300.0, 200.0))
textView.backgroundColor = UIColor.lightGrayColor()
textView.editable = false
textView.font = UIFont.systemFontOfSize(20)
textView.text = "Swift is an innovative new programming language for Cocoa and Cocoa Touch. Writing code is interactive and fun, the syntax is concise yet expressive, and apps run lightning-fast. Swift is ready for your next iOS and OS X project — or for addition into your current app — because Swift code works side-by-side with Objective-C."
self.view.addSubview(textView)
}
else if self.title == "UIToolbar"
{
let toolBar = UIToolbar(frame:CGRectMake(60.0, 120.0, 200.0, 30.0))
let flexibleSpace = UIBarButtonItem(barButtonSystemItem:UIBarButtonSystemItem.FlexibleSpace, target:nil, action:nil)
let barBtnItemA = UIBarButtonItem(title: "A", style:UIBarButtonItemStyle.Plain, target:nil, action:nil)
let barBtnItemB = UIBarButtonItem(title: "B", style:UIBarButtonItemStyle.Plain, target:nil, action:nil)
let barBtnItemC = UIBarButtonItem(title: "C", style:UIBarButtonItemStyle.Plain, target:nil, action:nil)
let barBtnItemD = UIBarButtonItem(title: "D", style:UIBarButtonItemStyle.Plain, target:nil, action:nil)
toolBar.items = [flexibleSpace, barBtnItemA, flexibleSpace, barBtnItemB, flexibleSpace, barBtnItemC, flexibleSpace, barBtnItemD, flexibleSpace]
self.view.addSubview(toolBar)
}
else if self.title == "UIActionSheet"
{
// Button
let button = UIButton(type: UIButtonType.System)
button.frame = CGRectMake(60.0, 120.0, 200.0, 50.0)
button.backgroundColor = UIColor.grayColor()
button.setTitleColor(UIColor.redColor(), forState: UIControlState.Normal)
button.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Highlighted)
button.setTitle("ActionSheet", forState: UIControlState.Normal)
button.setTitle("ActionSheet", forState: UIControlState.Highlighted)
button.addTarget(self, action: "showActionSheet", forControlEvents: UIControlEvents.TouchUpInside)
button.tag = 101
self.view.addSubview(button)
}
else if self.title == "UIActivityIndicatorView"
{
let activityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle:UIActivityIndicatorViewStyle.Gray)
activityIndicatorView.frame = CGRectMake(140.0, 120.0, 40.0, 40.0)
activityIndicatorView.startAnimating()
self.view.addSubview(activityIndicatorView)
}
}
func buttonAction(sender: UIButton) {
let alertController = UIAlertController(title: "通知", message: "确定还是取消", preferredStyle: UIAlertControllerStyle.Alert)
let alertView1 = UIAlertAction(title: "确定", style: UIAlertActionStyle.Default) { (UIAlertAction) -> Void in
print("确定按钮点击事件")
}
let alertView2 = UIAlertAction(title: "取消", style: UIAlertActionStyle.Default) { (UIAlertAction) -> Void in
print("取消按钮点击事件")
}
let alertView3 = UIAlertAction(title: "下次吧", style: UIAlertActionStyle.Default) { (UIAlertAction) -> Void in
print("下次吧按钮点击事件")
}
alertController.addAction(alertView1)
alertController.addAction(alertView2)
alertController.addAction(alertView3)
self.presentViewController(alertController, animated: true, completion: nil)
}
func showActionSheet()
{
let alertController = UIAlertController(title: "通知", message: "确定还是取消", preferredStyle: UIAlertControllerStyle.ActionSheet)
let alertView1 = UIAlertAction(title: "确定", style: UIAlertActionStyle.Default) { (UIAlertAction) -> Void in
print("确定按钮点击事件")
}
let alertView2 = UIAlertAction(title: "取消", style: UIAlertActionStyle.Default) { (UIAlertAction) -> Void in
print("取消按钮点击事件")
}
let alertView3 = UIAlertAction(title: "下次吧", style: UIAlertActionStyle.Default) { (UIAlertAction) -> Void in
print("下次吧按钮点击事件")
}
alertController.addAction(alertView1)
alertController.addAction(alertView2)
alertController.addAction(alertView3)
self.presentViewController(alertController, animated: true, completion: nil)
}
// UIPickerViewDataSource Methods
// returns the number of ‘columns‘ to display.
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int
{
return 3
}
// returns the # of rows in each component..
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
return 10
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
{
return String(format:"%i", row)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
时间： 2024-10-18 17:13:36