Swift-使用UIScreen类获取屏幕尺寸

在iOS 9中， 使用 UIScreen.mainScreen().applicationFrame 会报警:

'applicationFrame' was deprecated in iOS 9.0: Use -[UIScreen bounds]

代码实例：

//获取屏幕大小
let screenBounds:CGRect = UIScreen.mainScreen().bounds
print(screenBounds) //iPhone6输出：（0.0,0.0,375.0,667.0）
        
//获取屏幕大小（不包括状态栏高度）
let viewBounds:CGRect = UIScreen.mainScreen().applicationFrame
print(viewBounds) //iPhone6输出：（0.0,20.0,647.0）
        
//iPhone5s(0.0,320.0,568.0)   
//iPhone5s(0.0,548.0)
        
//iPhone6s(0.0,667.0)     
//iPhone6s(0.0,647.0)
        
//iPhone6sPlus (0.0,414.0,736.0)
//iPhone6sPlus (0.0,716.0)

参考:

http://www.hangge.com/blog/cache/detail_747.html

http://www.cnblogs.com/lovewx/archive/2015/01/14/4224533.html