ios - Objective c - Can't get Auto Layout to work for UIWebView inside UIView -

i have custom uitableview cell , inside cell there many subviews , use auto layout, work fine apart uiwebview, set inside uiview @ h:|-5-[webview] , v:[webview] thing cells dynamically resize , instead of uiwebview sitting in uiview uiwebview sits 5 left , 0 top of cell:

here custom uitableviewcell:

#import "posttableviewyoutubecell.h"          @implementation posttableviewyoutubecell          @synthesize main;         @synthesize top;         @synthesize center;         @synthesize centerleft;         @synthesize centerright;         @synthesize bottom;         @synthesize labelmessage;         @synthesize labelcat;         @synthesize labelsubcat;         @synthesize labelcountry;         @synthesize labeluser;         @synthesize labeldate;         @synthesize imageviewthreadimage;         @synthesize youtube;         @synthesize webviewyoutube;         @synthesize labelyoutubetitle;          nsstring *vid = @"";          - (id)initwithstyle:(uitableviewcellstyle)style reuseidentifier:(nsstring *)reuseidentifier {             self = [super initwithstyle:style reuseidentifier:reuseidentifier];             if (self) {             [self.contentview settranslatesautoresizingmaskintoconstraints:no];             self.contentview.autoresizingmask = uiviewautoresizingflexibleheight|uiviewautoresizingflexiblewidth;              cgrect screenbound = [[uiscreen mainscreen] bounds];             cgsize screensize = screenbound.size;             cgfloat screenwidth = screensize.width;             //cgfloat screenheight = screensize.height;              main = [uiview new];             [self.contentview addsubview:main];             main.translatesautoresizingmaskintoconstraints = no;             [main sizetofit];             main.backgroundcolor = [uicolor whitecolor];              top = [uiview new];             [main addsubview:top];             top.translatesautoresizingmaskintoconstraints = no;             [top sizetofit];             top.backgroundcolor = [uicolor whitecolor];              labeluser = [uilabel new];             [top addsubview:labeluser];             labeluser.translatesautoresizingmaskintoconstraints = no;             [labeluser sizetofit];             [labeluser setfont:[uifont systemfontofsize:14]];             labeluser.textcolor = [uicolor colorwithred:(114.0/255.0) green:(114.0/255.0) blue:(114.0/255.0) alpha:1.0];              labeldate = [uilabel new];             [top addsubview:labeldate];             labeldate.translatesautoresizingmaskintoconstraints = no;             [labeldate sizetofit];             [labeldate setfont:[uifont systemfontofsize:14]];             labeldate.textcolor = [uicolor colorwithred:(114.0/255.0) green:(114.0/255.0) blue:(114.0/255.0) alpha:1.0];              center = [uiview new];             [main addsubview:center];             center.translatesautoresizingmaskintoconstraints = no;             [center sizetofit];             center.backgroundcolor = [uicolor whitecolor];               imageviewthreadimage = [uiimageview new];             [center addsubview:imageviewthreadimage];             imageviewthreadimage.translatesautoresizingmaskintoconstraints = no;             imageviewthreadimage.backgroundcolor = [uicolor colorwithred:(207.0/255.0) green:(215.0/255.0) blue:(248.0/255.0) alpha:1.0];             [imageviewthreadimage sizetofit];              labelmessage = [uilabel new];             [center addsubview:labelmessage];             labelmessage.translatesautoresizingmaskintoconstraints = no;             [labelmessage sizetofit];             [labelmessage setfont:[uifont systemfontofsize:14]];             labelmessage.preferredmaxlayoutwidth = screenwidth - 10 - 36;             labelmessage.linebreakmode = nslinebreakbywordwrapping;             labelmessage.numberoflines = 0;             labelmessage.textcolor = [uicolor lightgraycolor];             //labelmessage.backgroundcolor = [uicolor colorwithred:(207.0/255.0) green:(215.0/255.0) blue:(248.0/255.0) alpha:1.0];             //labelmessage.linebreakmode = uilinebreakmodewordwrap;              bottom = [uiview new];             [main addsubview:bottom];             bottom.translatesautoresizingmaskintoconstraints = no;             [bottom sizetofit];              labelcat = [uilabel new];             [bottom addsubview:labelcat];             labelcat.translatesautoresizingmaskintoconstraints = no;             [labelcat sizetofit];             [labelcat setfont:[uifont systemfontofsize:12]];             labelcat.textcolor = [uicolor colorwithred:(58.0/255.0) green:(82.0/255.0) blue:(207.0/255.0) alpha:1.0];             labelcat.linebreakmode = nslinebreakbywordwrapping;             labelcat.numberoflines = 0;              labelsubcat = [uilabel new];             [bottom addsubview:labelsubcat];             labelsubcat.translatesautoresizingmaskintoconstraints = no;             [labelsubcat sizetofit];             [labelsubcat setfont:[uifont systemfontofsize:12]];             labelsubcat.textcolor = [uicolor colorwithred:(58.0/255.0) green:(82.0/255.0) blue:(207.0/255.0) alpha:1.0];              labelcountry = [uilabel new];             [bottom addsubview:labelcountry];             labelcountry.translatesautoresizingmaskintoconstraints = no;             [labelcountry sizetofit];             [labelcountry setfont:[uifont systemfontofsize:12]];             labelcountry.textcolor = [uicolor colorwithred:(58.0/255.0) green:(82.0/255.0) blue:(207.0/255.0) alpha:1.0];               youtube = [uiview new];             [main addsubview:youtube];             youtube.translatesautoresizingmaskintoconstraints = no;             [youtube sizetofit];               webviewyoutube = [uiwebview new];             [youtube addsubview:webviewyoutube];             webviewyoutube.translatesautoresizingmaskintoconstraints = no;             //[webviewyoutube sizetofit];              [webviewyoutube setallowsinlinemediaplayback:yes];             [webviewyoutube setmediaplaybackrequiresuseraction:no];             youtube.backgroundcolor = [uicolor colorwithred:(58.0/255.0) green:(82.0/255.0) blue:(207.0/255.0) alpha:1.0];             }              return self;         }          - (void)layoutsubviews         {             [super layoutsubviews];             // make sure contentview layout pass here subviews have frames set,             // need use set preferredmaxlayoutwidth below.             [self.contentview setneedslayout];             [self.contentview layoutifneeded];              // set preferredmaxlayoutwidth of mutli-line bodylabel based on evaluated width of label's frame,             // allow text wrap correctly, , result allow label take on correct height.             self.labelmessage.preferredmaxlayoutwidth = cgrectgetwidth(self.labelmessage.frame);         }          - (void)updateconstraints {             [super updateconstraints];              if (self.didsetupconstraints) return;              nsdictionary *viewsdictionary7 = @{@"main":main};             nsarray *constraint_h37 = [nslayoutconstraint constraintswithvisualformat:@"v:|[main]|"                                               options:0                                               metrics:nil                                             views:viewsdictionary7];              nsarray *constraint_v37 = [nslayoutconstraint constraintswithvisualformat:@"h:|[main]|"                                               options:0                                               metrics:nil                                             views:viewsdictionary7];             [self.contentview addconstraints:constraint_h37];             [self.contentview addconstraints:constraint_v37];              //nsstring *text = labelmessage.text;              nsdictionary *viewsdictionary3 = @{@"top":top,@"center":center,@"bottom":bottom,@"youtube":youtube};             nsarray *constraint_h3 = [nslayoutconstraint constraintswithvisualformat:@"v:|-10-[top]-5-[center(>=50)]-5-[bottom]-5-[youtube(100)]-10-|"                                              options:0                                              metrics:nil                                                views:viewsdictionary3];              nsarray *constraint_h33cvcv4545 = [nslayoutconstraint constraintswithvisualformat:@"h:|[youtube]|"                                                   options:0                                                   metrics:nil                                                 views:viewsdictionary3];              nsarray *constraint_h33 = [nslayoutconstraint constraintswithvisualformat:@"h:|[top]|"                                               options:0                                               metrics:nil                                             views:viewsdictionary3];              nsarray *constraint_h333 = [nslayoutconstraint constraintswithvisualformat:@"h:|[center]|"                                                options:0                                                metrics:nil                                              views:viewsdictionary3];              nsarray *constraint_h3335657 = [nslayoutconstraint constraintswithvisualformat:@"h:|[bottom]|"                                                options:0                                                metrics:nil                                                  views:viewsdictionary3];              nsdictionary *viewsdictionary4 = @{@"labeluser":labeluser,@"labeldate":labeldate};             nsarray *constraint_h4 = [nslayoutconstraint constraintswithvisualformat:@"v:|[labeluser]|"                                              options:0                                              metrics:nil                                                views:viewsdictionary4];              nsdictionary *viewsdictionary45 = @{@"labeldate":labeldate};             nsarray *constraint_h4555 = [nslayoutconstraint constraintswithvisualformat:@"v:|[labeldate]|"                                             options:0                                             metrics:nil                                               views:viewsdictionary45];              nsarray *constraint_h44 = [nslayoutconstraint constraintswithvisualformat:@"h:|-5-[labeluser]-20-[labeldate]-5-|"                                               options:0                                               metrics:nil                                             views:viewsdictionary4];              nsdictionary *viewsdictionary48 = @{@"labelmessage":labelmessage,@"imageviewthreadimage":imageviewthreadimage};                nsarray *constraint_h48 = [nslayoutconstraint constraintswithvisualformat:@"v:|-5-[labelmessage]-5-|"                                               options:0                                               metrics:nil                                             views:viewsdictionary48];              nsarray *constraint_h48342 = [nslayoutconstraint constraintswithvisualformat:@"v:|-8-[imageviewthreadimage(36)]"                                              options:0                                              metrics:nil                                                views:viewsdictionary48];                nsarray *constraint_h448345fgdfg = [nslayoutconstraint constraintswithvisualformat:@"h:|-5-[imageviewthreadimage(36)]"                                                    options:0                                                    metrics:nil                                                  views:viewsdictionary48];              cgrect screenbound = [[uiscreen mainscreen] bounds];             cgsize screensize = screenbound.size;             cgfloat screenwidth = screensize.width;             //cgfloat screenheight = screensize.height;               nsarray *constraint_h448345fgdfgdfdf454 = [nslayoutconstraint constraintswithvisualformat:[nsstring stringwithformat:@"h:|-46-[labelmessage(%f)]-10-|",screenwidth - 51]                                                       options:0                                                       metrics:nil                                                     views:viewsdictionary48];                 /**nsarray *constraint_h448 = [nslayoutconstraint constraintswithvisualformat:@"h:|-5-[labelmessage]-5-|"              options:0              metrics:nil              views:viewsdictionary48];**/              nsdictionary *viewsdictionary488 = @{@"labelcat":labelcat,@"labelcountry":labelcountry,@"labelsubcat":labelsubcat};             nsarray *constraint_h488 = [nslayoutconstraint constraintswithvisualformat:@"v:|-5-[labelcat]|"                                                options:0                                                metrics:nil                                              views:viewsdictionary488];             nsarray *constraint_h48898 = [nslayoutconstraint constraintswithvisualformat:@"v:|-5-[labelcountry]|"                                              options:0                                              metrics:nil                                                views:viewsdictionary488];             nsarray *constraint_h48898fgf54 = [nslayoutconstraint constraintswithvisualformat:@"v:|-5-[labelsubcat]|"                                                   options:0                                                   metrics:nil                                                 views:viewsdictionary488];              nsarray *constraint_h4488 = [nslayoutconstraint constraintswithvisualformat:@"h:|-5-[labelcat]-10-[labelsubcat]-10-[labelcountry]"                                             options:0                                             metrics:nil                                               views:viewsdictionary488];                   nsdictionary *viewsdictionary8 = @{@"webviewyoutube":webviewyoutube};             nsarray *constraint_h378 = [nslayoutconstraint constraintswithvisualformat:@"v:[webviewyoutube(80)]"                                               options:0                                               metrics:nil                                             views:viewsdictionary8];              nsarray *constraint_v378 = [nslayoutconstraint constraintswithvisualformat:@"h:|-5-[webviewyoutube(100)]"                                               options:0                                               metrics:nil                                             views:viewsdictionary8];             [youtube addconstraints:constraint_h378];             [youtube addconstraints:constraint_v378];                [self.contentview addconstraints:constraint_h3];             [self.contentview addconstraints:constraint_h33];             [self.contentview addconstraints:constraint_h333];             [self.contentview addconstraints:constraint_h4];             [self.contentview addconstraints:constraint_h44];             [self.contentview addconstraints:constraint_h48];             //[self.contentview addconstraints:constraint_h448];             [self.contentview addconstraints:constraint_h4555];             [self.contentview addconstraints:constraint_h3335657];             [self.contentview addconstraints:constraint_h488];             [self.contentview addconstraints:constraint_h48342];             [self.contentview addconstraints:constraint_h4488];             [self.contentview addconstraints:constraint_h448345fgdfg];             [self.contentview addconstraints:constraint_h48898];             [self.contentview addconstraints:constraint_h48898fgf54];             [self.contentview addconstraints:constraint_h448345fgdfgdfdf454];             [self.contentview addconstraints:constraint_h33cvcv4545];                self.didsetupconstraints = yes;          }           -(void)setyoutube: (nsstring*)youtubeid :(nsstring*)title {               dispatch_async( dispatch_get_main_queue(), ^{                  nsstring* embedhtml = [nsstring stringwithformat:@"\                            <html>\                            <body style='margin:0px;padding:0px;'>\                            <script type='text/javascript'>\                            </script>\                            <iframe id='playerid' type='text/html' width='%d' height='%d' src='http://www.youtube.com/embed/%@?enablejsapi=1&rel=0&playsinline=1' frameborder='0'>\                            </body>\                            </html>", 100, 80, youtubeid];                 [[nsurlcache sharedurlcache] removeallcachedresponses];                  [webviewyoutube loadhtmlstring:embedhtml baseurl:[[nsbundle mainbundle] resourceurl]];                 });         }              - (void)awakefromnib {             // initialization code         }          - (void)setselected:(bool)selected animated:(bool)animated {             [super setselected:selected animated:animated];              // configure view selected state         }          @end