ios - How can I add a vibrancy effect to a subview? -

the code below works fine simple:

uivisualeffectview *blurview 

but, when try add label has vibrancy effect breaks down in tears , errors. :(

    uiblureffect * effect = [uiblureffect effectwithstyle:uiblureffectstylelight];      _blurview = [[uivisualeffectview alloc] initwitheffect:effect];     _blurview.backgroundcolor = [uicolor colorwithwhite:0.8 alpha:0.5];     [self addsubview:_blurview];      uivisualeffectview * vibrancyview = [[uivisualeffectview alloc] initwitheffect:effect];      [_blurview.contentview addsubview:vibrancyview];      _titlelabel = [[uilabel alloc] init];     _titlelabel.font = [uifont boldsystemfontofsize:17.0];     _titlelabel.textcolor = [uicolor colorwithwhite:0.1 alpha:0.5];     _titlelabel.text = @"title";      [vibrancyview.contentview addsubview:_titlelabel]; 

custom set frame method:

#pragma mark -  - (void)setframe:(cgrect)frame {     [super setframe:frame];      _blurview.frame = cgrectmake(0, 0, frame.size.width, frame.size.height);      _titlelabel.frame = cgrectmake(16, 16, 200, 30); } 

the label doesn't show on screen, show if add simple subview blurview.

[_blurview addsubview:_titlelabel]; 

i'm using code in initialization method, cause of problem?

- (instancetype)init {     self = [super init];      if (self) {          // code...     }      return self; } 

i need in initialization method in order consistent how write code.

source

edit 1:

the vibrancyview should have frame set.

vibrancyview.frame = cgrectmake(0, 0, _blurview.frame.size.width, _blurview.frame.size.height); 

turns out example in source incomplete.

edit 2:

the label show has no vibrancy effect.

help!

you missing creation of vibrancy effect:

uivibrancyeffect * vibrancyeffect = [uivibrancyeffect effectforblureffect:effect]; 

later should pass vibrancy view:

uivisualeffectview * vibrancyview = [[uivisualeffectview alloc] initwitheffect: vibrancyeffect]; 

i've made class available on github simplefy boiler code needed create uivisualeffectview.