Swift Code 碎片整理

[v5tech]

Swift Code 碎片整理

1. NSURLConnection

var url = NSURL(string: "http://www.stackoverflow.com")
var request = NSURLRequest(URL: url)

NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue(), completionHandler: {(response: NSURLResponse!, data: NSData!, error: NSError!) in
        println(NSString(data: data, encoding: NSUTF8StringEncoding))
})

2. UIAlertView

let alertView:UIAlertView = UIAlertView()
alertView.title="提示"
alertView.message="恭喜你,你中奖了!"
alertView.addButtonWithTitle("确定")
alertView.show()

或者

var alert:UIAlertController = UIAlertController(title: "提示", message: "恭喜你,你中奖了!", preferredStyle: UIAlertControllerStyle.Alert)
var action: UIAlertAction = UIAlertAction(title: "确定", style: UIAlertActionStyle.Default, handler: {
    ac -> Void in
})
alert.addAction(action)
self.presentViewController(alert, animated: true, completion: nil)

3. navigationItem

//设置导航栏按钮(左边)
let leftBarButtonItem:UIBarButtonItem = UIBarButtonItem(title: "主页", style: UIBarButtonItemStyle.Plain, target: self, action: Selector("showMain"))
self.navigationItem.leftBarButtonItem = leftBarButtonItem

//设置导航栏按钮(右边)
let rightBarButtonItem:UIBarButtonItem = UIBarButtonItem(title: "设置", style: UIBarButtonItemStyle.Plain, target: self, action: Selector("showSetting"))
self.navigationItem.rightBarButtonItem = rightBarButtonItem

//设置导航栏名称
self.navigationItem.title="全国主要城市PM2.5"



func showMain(){

//SCLAlertView().showTitle(self,  title: "提示", subTitle: "你点击了主页", duration: 2.0, style: SCLAlertViewStyle.Info)

var alert = UIAlertController(title: "提示", message: "你点击了主页", preferredStyle: UIAlertControllerStyle.Alert)

alert.addAction(UIAlertAction(title: "确定", style: UIAlertActionStyle.Default, handler: {

    (UIAlertAction) -> Void in

        println("你点击了确定按钮")

    }))

self.presentViewController(alert, animated: true, completion: nil)

}

func showSetting(){
//SCLAlertView().showTitle(self,  title: "提示", subTitle: "你点击了设置", duration: 2.0, style: SCLAlertViewStyle.Info)

var alert = UIAlertController(title: "提示", message: "你点击了设置", preferredStyle: UIAlertControllerStyle.Alert)

alert.addAction(UIAlertAction(title: "确定", style: UIAlertActionStyle.Default, handler: {

    (UIAlertAction) -> Void in

        println("你点击了确定按钮")

    }))

self.presentViewController(alert, animated: true, completion: nil)
}