Three ways to achieve the effect of a frosted glass in iOS

Way one: Uitoolbar to achieve the effect of frosted glass

Before iOS7.0 (including) or a system class can achieve the effect of the glass, is Uitoolbar this class, and use is quite simple, a few lines of code can be done.

 1  /*2 style of frosted glass (enumeration) 3 Uibarstyledefault = 0, 4 uibarstyleblack = 1, 5 Uibarstyleblac Kopaque = 1,//Deprecated. Use Uibarstyleblack 6 uibarstyleblacktranslucent = 2,//Deprecated. Use Uibarstyleblack and set the translucent property to YES 7*/ 8Uiimageview *bgimgview =[[Uiimageview alloc] initWithFrame:self.view.bounds];9Bgimgview.image = [UIImage imagenamed:@"huoying4.jpg"];Ten[Self.view Addsubview:bgimgview]; One      AUitoolbar *toolbar = [[Uitoolbar alloc] Initwithframe:cgrectmake (0,0, bgimgview.frame.size.width*0.5, BgImgView.frame.size.height)]; -Toolbar.barstyle =uibarstyleblacktranslucent; -[Bgimgview Addsubview:toolbar];

way Two: uiblureffect for frosted glass effects

after iOS8.0, Apple added a class Uivisualeffectview, which achieves the same effect as the uitoolbar above, and is also very efficient and very simple to use. , a few lines of code.  uivisualeffectview is an abstract class that cannot be used directly, and is implemented through the following three subclasses (Uiblureffect, Uivisualeffevt, Uivisualeffectview).

Subclass Uiblureffect has only one class method for quickly creating a frosted glass effect, and the parameter is an enumeration used to set the style of the frosted glass.

 1Uiimageview *bgimgview =[[Uiimageview alloc] initWithFrame:self.view.bounds];2Bgimgview.image = [UIImage imagenamed:@"huoying4.jpg"]; 3Bgimgview.contentmode =Uiviewcontentmodescaleaspectfill;4     //[Bgimgview setimagetoblur: [UIImage imagenamed:@ "huoying4.jpg"] blurradius:20 Completionblock:nil]; 5bgimgview.userinteractionenabled =YES;6[Self.view Addsubview:bgimgview];7      8     /*9 style of frosted glass (enumeration) uiblureffectstyleextralight,11 uiblureffectstylelight,12 UIBlurEffectStyleDark13 */ -Uiblureffect *effect =[Uiblureffect Effectwithstyle:uiblureffectstyledark]; theUivisualeffectview *effectview =[[Uivisualeffectview alloc] initwitheffect:effect]; -Effectview.frame = CGRectMake (0,0, bgimgview.frame.size.width*0.5, bgImgView.frame.size.height); -[Bgimgview Addsubview:effectview];

way three: Gaussian fuzzy processing to achieve the glass effect

This method is my preferred method, the use of Gaussian blur processing can easily make the glass effect.

1Uiimageview *bgimgview =[[Uiimageview alloc] initWithFrame:self.view.bounds];2   //bgimgview.image = [UIImage imagenamed:@ "huoying4.jpg"];3Bgimgview.contentmode =Uiviewcontentmodescaleaspectfill;4   //to the background image of the glass effect processing parameters Blurradius default is 20, can be specified, the last parameter block callback can be nil5[Bgimgview setimagetoblur: [UIImage imagenamed:@"huoying4.jpg"] Blurradius: -Completionblock:nil];6bgimgview.userinteractionenabled =YES;7[Self.view Addsubview:bgimgview];

Three ways to achieve the effect of a frosted glass in iOS