ios - View hierarchy error while presenting a viewcontroller -


i have following class:

class homeviewcontroller: uiviewcontroller { override func viewdidload() {    super.viewdidload()    callothervc() }    func callothervc() {   let viewcontroller = stepsviewcontroller()   let rootviewcontroller = uinavigationcontroller(rootviewcontroller: viewcontroller)   self.presentviewcontroller(rootviewcontroller, animated: true, completion: nil)  } }

stepsviewcontroller viewcontroller. in stepsviewcontroller, try dismiss current stepsviewcontroller , present other viewcontroller. following code.

class stepsviewcontroller: uiviewcontroller {   override func viewdidload() {    super.viewdidload()    callsecondothervc() }  func callsecondothervc() {     let vc = viewcontroller()     self.addchildviewcontroller(vc)     self.parentviewcontroller!.dismissviewcontrolleranimated(true, completion: nil)     vc.callothervc() } }

i initialize viewcontroller() because need call same function callothervc viewcontroller. model in viewcontroller changes i'm calling same uinavigationcontroller callothervc function.

whenever this, error below:\

warning: attempt present (uinavigationcontroller: 0x7d991600) on (homeviewcontroller: 0x7a6e00a0) view not in window hierarchy!

uinavigationcontroller callsecondothervc , homeviewcontroller is.

how should order vcs? , if can more explain view hierarchy, appreciate.

i think need here, call method viewdidappear, rather viewdidload. reason view not in view hierarchy @ time of viewdidload.


Comments

Post a Comment

Popular posts from this blog

Redirect to a HTTPS version using .htaccess -

i need modify .htaccess file redirect urls https version without "www". http://example.com --> https://example.com http://www.example.com --> https://example.com https://www.example.com --> https://example.com this how .htaccess file looks like: rewriteengine on rewritecond %{request_filename} !-d rewritecond %{request_filename} !-f rewriterule ^(.*)$ redirect.php?id=$1&page=$2 [qsa,l] what modifications need make .htaccess in order forward https without "www"? it depends on doing current code. looks file called redirect trying display php page seo friendly url. think might confusing people. anyway, need , force https without www, need 1 more rule above. also second rule needs two capture groups in rewriterule test string because wanting 2 different values using $1 , $2 references. rewriteengine on #rediect www non www and/or http https --- combinations. rewritecond %{http_host} !^example\.com [nc,or] rewritecond %{https} !^...
Read more

Unlimited choices in BASH case statement -

consider simple bash snippet: case $option in 1) image=${options[0]%.tar} ;; 2) image=${options[1]%.tar} ;; 3) image=${options[2]%.tar} ;; 4) image=${options[3]%.tar} ;; *) echo "invalid option" exit 1 esac in real script numbers goes 30. makes pretty long. can somehow specify cases variable? something this: case $option in $i) image=${options[$(($i-1))]%.tar} any pointer appreciated. you can match against multiple patterns in single clause: case $option in 1|2|3: echo "$option one, 2 or three" ;; esac if still typing you, can use simple pattern matching: case $option in # following matches # - single-digit numbers 0-9 # - two-digit numbers starting either 1 or 2 # - number 30 [0-9]|[12][0-9]|30) image=${options[$(($option-1))]%.tar} ;; *) echo "invalid option" 1>&2 exit 1 esac
Read more

javascript - jQuery: Add class depending on URL in the best way -

i have html progress meter: <div class="col-md-3" style="margin-left: -20px;"> <div class="progress-pos active" id="progess-1"> <div class="progress-pos-inner"> login </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-2"> <div class="progress-pos-inner"> scan items </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-3"> <div class="progress-pos-inner"> confirm address </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-4"> <div class="progress-pos-in...
Read more