ios - Keeping Core Data in sync with multiple watches -


i'm writing iphone , watch app. i'm planning on supporting ability pair multiple watches phone.

the iphone , watch app both read , write core data datastore, , i'll use watchconnectivity keep them in sync (using transferuserinfo:). user write/dictate on 1 device, , appear on other.

i'm struggling figure out how support multiple watches. given following scenario:

  • user using phone/watcha
    • over course of day, user adds 10 items
  • end of day, switch watchb

how watchb in sync phone/watcha?

  • will wksession automatically replay transferuserinfo calls made when watcha paired?
  • do need somehow keep track of watchb needs , replay myself?
  • do send entire sqlite database using transferfile api (that seems bit much)?

will wksession automatically replay transferuserinfo calls made when watcha paired?

no won't. data gets transferred paired watch.

when switch other watch, you'd have arrange update store.

do need somehow keep track of watchb needs , replay myself?

in short, yes, if that's approach take.

one edge case if user replaces old/broken watch new/replacement watch, yet didn't unpair old one. wouldn't want keep track of growing number of changes watch won't ever paired again.

you'd have handle case user upgrades phone, , pairs existing watches new phone. device tracking , syncing should continue work across different device pair.

do send entire sqlite database using filetransfer api (that seems bit much)?

it depends on size of database, versus complexity of journaling , syncing data between 3 or more stores.

what new features me keep watch date?

if must maintain multiple stores, should take advantage of background refresh task feature in watchos 3 keep watch(es) up-to-date before user launches app, user won't have wait sync.

this answer might helpful, if aren't using complications.

what other options?

apple recommends design around different ways of interacting devices. user might want glance @ watch couple of seconds review items, rely on phone more complex tasks.

in case, maintain single store on iphone, , transfer needed data iphone displayed on watch. if changes, push updated data phone.

a "handoff" approach works best, phone , watch know recent items were, , user can switch between phone , watch during day.

of course, contingent on whether watch must operate independently or not while out-of-range of phone.


Comments

Post a Comment

Popular posts from this blog

jOOQ update returning clause with Oracle -

according http://www.jooq.org/doc/3.8/manual/sql-building/sql-statements/update-statement/ jooq doesn't support returning clause in update statements databases except firebird , postgres. does know, still correct oracle jooq? according oracle's documentation, oracle db supports returning clase delete, insert, or update statements. incorrect manual you're right - manual wrong , should fixed: https://github.com/jooq/jooq/issues/5470 single row update returning jooq 3.8 added support single row update .. returning statements. internally, uses callablestatement , pl/sql block of form: begin update "my_table" set "my_table"."column" = 'xyz' "my_table"."id" = 1 returning "my_table"."id", "my_table"."column" ?, ?; ? := sql%rowcount; end; the relevant issue is: https://github.com/jooq/jooq/issues/5190 multi row update returning a...
Read more

c# - Json.Net Serialize String from URI -

currently i'm using web request body of webpage strictly json. var request = webrequest.create("urihere"); string text; var response = (httpwebresponse)request.getresponse(); using (var sr = new streamreader(response.getresponsestream())) { text = sr.readtoend(); } now i've got string of json in variable i'm trying figure out how parse data. i'm attempting use json.net below: user primaryuser = new models.user(); primaryuser.fullname = "test"; jsonserializer serializer = new jsonserializer(); serializer.converters.add(new javascriptdatetimeconverter()); serializer.nullvaluehandling = nullvaluehandling.ignore; using (streamwriter sw = new streamwriter("filenamehere")) using (jsonwriter writer = new jsontextwriter(sw)) { serializer.serialize(writer, primary...
Read more

java - Warning equals/hashCode on @Data annotation lombok with inheritance -

i have entity inherits other. on other hand, i'm using lombok project reduce boilerplate code, put @data annotation. annotation @data inheritance produces next warning: generating equals/hashcode implementation without call superclass, though class not extend java.lang.object. if intentional, add '@equalsandhashcode(callsuper=false)' type. is advisable add annotation @equalsandhashcode (callsuper = true) or @equalsandhashcode (callsuper = false) ? if not added, 1 callsuper=false or callsuper=true ? the default value false . 1 if don't specify , ignore warning. yes, recommended add @equalsandhashcode annotation on @data annotated classes extend else object. cannot tell if need true or false , depends on class hierarchy, , need examined on case-by-case basis. however, project or package, can configure in lombok.config call super methods if not direct subclass of object. lombok.equalsandhashcode.callsuper = call for configuration system ...
Read more