osx - bundle identifier and preferences? -


i know if nsuserfedault tied bundle identifier ?

for example have version 1.0 bundle identifier com.something , app saved settings in nsuserdefault standarddefaults

now sometime later if update comes , required change bundle identifier reason, new version able access settings/preferences stored previous version ?

the app not published app store has package installer

if change bundle identifier, you’ll have different set of user defaults. can still read old defaults provided application not sandboxed. example, if old bundle identifier com.company.aaa, can use following code copy old defaults new application+bundle identifier when application starts:

// read old defaults com.company.aaa nsuserdefaults *olddefaults = [nsuserdefaults new]; nsdictionary *olddefaultsdict = [olddefaults persistentdomainforname:@"com.company.aaa"];  // store old defaults in standard user defaults [[nsuserdefaults standarduserdefaults] setpersistentdomain:olddefaultsdict forname:[[nsbundle mainbundle] bundleidentifier]]];

you’ll want store defaults flag indicate you’ve imported old defaults once in order avoid rewriting them subsequently. example:

nsuserdefaults *currentdefaults = [nsuserdefaults standarduserdefaults]; if (! [currentdefaults boolforkey:@"importedolddefaultsfromaaa"]) {     // read old defaults com.company.aaa     nsuserdefaults *olddefaults = [nsuserdefaults new];     nsdictionary *olddefaultsdict = [olddefaults persistentdomainforname:@"com.company.aaa"];      // store old defaults in standard user defaults     [currentdefaults setpersistentdomain:olddefaultsdict forname:[[nsbundle mainbundle] bundleidentifier]]];      // set flag avoid subsequent import of old defaults     [currentdefaults setbool:yes forkey:@"importedolddefaultsfromaaa"]; }

Comments

Post a Comment

Popular posts from this blog

java.util.scanner - How to read and add only numbers to array from a text file -

i'm learning java , have question regarding reading file want read numbers file contains strings well. here example of file: 66.56 "3 java 3-43 5-42 2.1 1 and here coding: public class test { public static void main (string [] args){ if (0 < args.length) { file x = new file(args[0]); try{ scanner in = new scanner( new fileinputstream(x)); arraylist<double> test = new arraylist<>(); while(in.hasnext()){ if(in.hasnextdouble()){ double f=in.nextdouble(); test.add(f);} else {in.next();} } catch(ioexception e) { system.err.println("exception during reading: " + e); } } my problem add 66.56,2.1 , 1 doesn't add 3 after "3 or ignores 3-43 , 5-42 can tell me how skip strings , add doubles here? thanks all said 3 ie; "3, 3-43 , 4-42 strings either u read string , split , check number @ " , - or put in space between characters , integers. jvm after compilation tre...
Read more

rewrite - Trouble with Wordpress multiple custom querystrings -

i'm working on adding multiple querystring , doesn't seem work. i've found codes seems work others might i'm missing something. i want like: http://mydomain.com/board/?getyear=2013&getsometext2=sometext to http://mydomain.com/board/2013/sometext/ i added code below functions.php file. doesn't seem work should though. this works. echoing querystring gets both variable without problem. http://mydomain.com/board/2013/sometext/ but doesn't. tested querystring vis isset() seems nothing being set/get http://mydomain.com/board/2013/ function add_query_vars($vars) { $vars[] = "getyear"; $vars[] = "getsometext2"; return $vars; } add_filter('query_vars', 'add_query_vars'); function add_rewrite_rules($arules) { $anewrules = array('board/([^/]+)/([^/]+)/?$' => 'index.php?pagename=board&getyear=$matches[1]&getsometext2=$matches[2]'); $arules = $a...
Read more