ios - Connect two labels to one outlet -


now understand question has been asked before, answers unsatisfactory. issue have view controller view , stuff in including label. added bunch of code , i'm expanding on it. have issue i've decided add uiview interface , has label , label going function label have in first uiview. problem don't want have go in view controller method , add line of code each time manipulate first label. there anyway can link label initial iboutlet have set first label? or have go in code , add line of code everytime manipulate first label?

basically simple answer no. whether use outlets or outlet collection or tags or whatever, have one reference in code one label in interface, , another reference in code another reference in interface. can compress mode of expression cycle readily through references (as suggested in different answer), basic fact inescapable that, ultimately, way "talk to" label through 1 reference points that label , label alone.

the way of getting around not use direct references @ all. example, single message can sent multiple recipients using nsnotification. have 2 instances of uilabel subclass of own, , "shout" both instances simultaneously posting notification view controller - notification automatically passed on both labels, because have arranged beforehand them register it.

similarly, alternative use key-value observing change in view controller automatically propagated both labels automatically because "observe" change, meaning sent notifications - inverted form of nsnotification. (if mac os x, make simpler, safer version of arrangement using "bindings".)

however, cannot recommend approach. truth still live in excruciatingly primitive world of text-based programming, 1 line @ time, 1 command @ time, 1 reference @ time, , must bite bullet , on it.


Comments

Post a Comment

Popular posts from this blog

Android layout hidden on keyboard show -

i have strange problem layout. when tap on edittext , keyboard shown edittext stay on bottom , when tap on to hide keyboard , keyboard hides , edittext go should when want input text. when tap again, keyboard shown , edittext goes down behind keyboard... <relativelayout android:layout_width="match_parent" android:layout_height="match_parent" > <scrollview android:layout_width="match_parent" android:layout_height="fill_parent" android:above="@+id/rl_commands"> <textview android:layout_width="match_parent" android:layout_height="wrap_content"/> </scrollview> <relativelayout android:layout_width="match_parent android:layout_height="24dp" android:id="@+id/rl_commands" android:alignparentbottom="true">
Read more

google app engine - 403 Forbidden POST - Flask WTForms -

i have flask application running on google app engine. trying submit form built using wtform , keep getting following error. 403 forbidden: don't have permission access requested resource. either read-protected or not readable server. location.html (part of code) <form method=post action="/home/location"> .... <button type="submit" class="btn btn-primary" value="submit"> directions </button> </form> main.py @app.route('/home/location', methods=['post', 'get']) def location(): form = cfcdirections.direction(request.form) print(request.method) if request.method == 'post' , form.validate(): print("after if") directions = cfcdirections() street_no = directions.no street = directions.street suburb = directions.suburb postcode = directions.postcode
Read more

c - Why would PK11_GenerateRandom() return an error -8023? -

i looking through internet trying find source of pk11_generaterandom() function see why function fail. have program uses function when moved new flavor of linux, fails after forking ( fork() ) since not believe there problem nss, suspect doing incorrectly disregarded in older versions of linux new 1 there issue. the openssl package same on 'good' , 'bad' server: openssl 0.9.8e-fips-rhel5 01 jul nss rpm differs though. 'good' has nss-3.12.2.0-2.el5 and bas has version nss-3.15.3-4.el5_10 the 'good' server uses quite obsolete linux: linux 2.6.18-128.el5 #1 smp wed jan 21 08:45:05 est 2009 x86_64 x86_64 x86_64 gnu/linux enterprise linux enterprise linux server release 5.3 (carthage) red hat enterprise linux server release 5.3 (tikanga) the 'bad' server newer: linux bad 2.6.18-371.4.1.el5 #1 smp wed jan 29 11:05:49 pst 2014 x86_64 x86_64 x86_64 gnu/linux oracle linux server release 5.10 red hat enterprise linux server release
Read more