Swift Tip
在safari打开网页
if let url = NSURL(string: "http://sspai.com") {
UIApplication.sharedApplication().openURL(url)
}
NSURLConnection 网路连接
var url = NSURL(string: "http://sspai.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))
})
对话框
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)
导航栏
//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"
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