package Ġcodes . chr ish or ner . socket weather . data Ċ Ċ import Ġandroid . app . Application Ċ import Ġandroid . content . Context Ċ import Ġandroid . location . Location Ċ import Ġandroid . location . Location Listener Ċ import Ġandroid . location . Location Manager Ċ import Ġandroid . location . Location Manager . NETWORK _ PROVIDER Ċ import Ġandroidx . core . content . getSystem Service Ċ import Ġkotlinx . coroutines . channels . await Close Ċ import Ġkotlinx . coroutines . flow . Flow Ċ import Ġkotlinx . coroutines . flow . Mutable State Flow Ċ import Ġkotlinx . coroutines . flow . callback Flow Ċ import Ġkotlinx . coroutines . flow . conf late Ċ import Ġkotlinx . coroutines . flow . distinct Until Changed Ċ import Ġkotlinx . coroutines . flow . empty Flow Ċ import Ġkotlinx . coroutines . flow . flatMap Latest Ċ import Ġtim ber . log . Tim ber Ċ Ċ interface ĠDevice Locator Ġ{ ĊĠ Ġfun Ġenable () ĊĠ Ġfun Ġdisable () ĊĠ Ġfun Ġobserve Device Location (): ĠFlow < Device Location > Ċ } Ċ Ċ class ĠReal Device Locator ( private Ġval Ġapp : ĠApplication ) Ġ: ĠDevice Locator Ġ{ ĊĊĠ Ġprivate Ġval Ġenabled Flow Ġ= ĠMutable State Flow ( false ) ĊĊĠ Ġoverride Ġfun Ġenable () Ġ{ ĊĠĠĠ Ġenabled Flow . value Ġ= Ġtrue ĊĠ Ġ} ĊĊĠ Ġoverride Ġfun Ġdisable () Ġ{ ĊĠĠĠ Ġenabled Flow . value Ġ= Ġfalse ĊĠ Ġ} ĊĊĠ Ġoverride Ġfun Ġobserve Device Location (): ĠFlow < Device Location > Ġ{ ĊĠĠĠ Ġreturn Ġenabled Flow ĊĠĠĠĠĠ Ġ. flatMap Latest Ġ{ Ġenabled Ġ-> Ġif Ġ( enabled ) Ġget Device Location Updates ( app ) Ġelse Ġempty Flow () Ġ} ĊĠĠĠĠĠ Ġ. distinct Until Changed () ĊĠĠĠĠĠ Ġ. conf late () ĊĠ Ġ} Ċ } Ċ Ċ private Ġvar Ġcached Location : ĠDevice Location ? Ġ= Ġnull Ċ Ċ private Ġfun Ġget Device Location Updates ( context : ĠContext ): ĠFlow < Device Location > Ġ= Ġcallback Flow Ġ{ ĊĠ Ġval Ġlocation Manager : ĠLocation Manager ? Ġ= Ġcontext . getSystem Service () ĊĊĠ Ġif Ġ( location Manager Ġ== Ġnull ) Ġ{ ĊĠĠĠ ĠTim ber . e (" Location Manager Ġnot Ġavailable .") ĊĠĠĠ Ġclose ( IllegalStateException (" Location Manager Ġnot Ġavailable .")) ĊĠĠĠ Ġreturn @ callback Flow ĊĠ Ġ} ĊĊĠ Ġcached Location ?. let Ġ{ Ġsend ( it ) Ġ} ĊĊĠ Ġval Ġlast Known Location Ġ= Ġtry Ġ{ ĊĠĠĠ Ġlocation Manager . getLast Known Location ( NETWORK _ PROVIDER ) ĊĠ Ġ} Ġcatch Ġ( e : ĠSecurity Exception ) Ġ{ ĊĠĠĠ ĠTim ber . e ( e , Ġ" Location Ġpermission Ġnot Ġgranted .") ĊĠĠĠ Ġclose ( e ) ĊĠĠĠ Ġnull ĊĠ Ġ} ĊĊĠ Ġif Ġ( last Known Location Ġ!= Ġnull Ġ&& Ġ! is Closed For Send ) Ġ{ ĊĠĠĠ Ġval Ġdevice Location Ġ= ĠDevice Location ( last Known Location . latitude , Ġlast Known Location . longitude ) ĊĠĠĠ ĠTim ber . d (" Found Ġlast Ġknown Ġlocation : Ġ% f , Ġ% f ", Ġdevice Location . latitude , Ġdevice Location . longitude ) ĊĠĠĠ Ġcached Location Ġ= Ġdevice Location ĊĠĠĠ Ġsend ( device Location ) ĊĠ Ġ} ĊĊĠ Ġval Ġcallback Ġ= Ġobject Ġ: ĠLocation Listener Ġ{ ĊĠĠĠ Ġoverride Ġfun Ġon Location Changed ( location : ĠLocation ) Ġ{ ĊĠĠĠĠĠ Ġval Ġdevice Location Ġ= ĠDevice Location ( location . latitude , Ġlocation . longitude ) ĊĠĠĠĠĠ ĠTim ber . d (" New Ġlocation Ġupdate : Ġ% f , Ġ% f ", Ġdevice Location . latitude , Ġdevice Location . longitude ) ĊĠĠĠĠĠ Ġcached Location Ġ= Ġdevice Location ĊĠĠĠĠĠ Ġif Ġ(! is Closed For Send ) Ġtry Send ( device Location ) ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġoverride Ġfun Ġon Provider Enabled ( provider : ĠString ) Ġ{} ĊĊĠĠĠ Ġoverride Ġfun Ġon Provider Disabled ( provider : ĠString ) Ġ{ ĊĠĠĠĠĠ ĠTim ber . e (" Location Ġprovider Ġ% s Ġisn 't Ġenabled .", Ġprovider ) ĊĠĠĠĠĠ Ġclose ( IllegalStateException (" Location Ġprovider Ġ$ provider Ġisn 't Ġenabled .")) ĊĠĠĠ Ġ} ĊĠ Ġ} ĊĊĠ Ġtry Ġ{ ĊĠĠĠ Ġlocation Manager . request Location Updates ( NETWORK _ PROVIDER , Ġ 3 0 0 0 , Ġ 5 0 f , Ġcallback ) ĊĠ Ġ} Ġcatch Ġ( e : ĠSecurity Exception ) Ġ{ ĊĠĠĠ ĠTim ber . e ( e , Ġ" Location Ġpermission Ġnot Ġgranted .") ĊĠĠĠ Ġclose ( e ) ĊĠ Ġ} ĊĊĠ Ġawait Close Ġ{ Ġlocation Manager . remove Updates ( callback ) Ġ} Ċ } Ċ