IOS adds Blur to ImageView

Development tools with swift2.3,3.0 friends, change the grammar!

First you have to have a uiimageview and then:

I was declaring a global uivisualeffectview-------private var effectview:uivisualeffectview!

let blur = Uiblureffect (style:UIBlurEffectStyle.Light)

Effectview = Uivisualeffectview (Effect:blur)

Effectview.frame = CGRectMake (0, 0, Screen_width, screen_width* (229/375))//Set his frame, just like your picture size oh.

Effectview.alpha = 0.9 can adjust the degree of ambiguity, this I tried is possible, but IOS8 will prompt a warning, I will not write. But there is no warning above the iOS8. I tried it on the real machine. I'm using a iPhone7, no warning.

Topimageview.addsubview (Effectview)

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IOS adds Blur to ImageView