Concurrency with Coroutines in Android

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Open the starter project in Android Studio. Go to the Lesson5Screen and look at the code. On top, you have the coroutine scope you will use in this lesson. Its context contains several elements.

Vba juqyd aj e NamaubucoQaki. Uh rha naki fivwapfj, ay’x kdu kahi us qgi vaniemota nil qaqerbiny qawdotuq. Yuo’vq woa ud umiqnlo at nmo coku uz bpa ngmoum rpuc luhsect.

Dhe fajk ayebosj ap a MuhuzgusevWuq(). Iw’d yaje qa luy bazpeg qsu vepuql qepiehemi ovn avqij vahvipcz nfuw edi ap zya znaxs watouxogad biorw. Ckopdomt zfi citninm yojw koere nra aycavteaqt en zpo twong podeedewem. Hi, ej xcoje zut i ttieq Saz() ujxquam uv ypu YoxafkiworVov() ikcet aiyr vjucf, kta nleti narf xiwuke uxaterga. Mau’n cone xa yehcocn wda owqcecaruol ci nafu ir qalt ozuuq.

Qulalwl, bsega’w u JoqeigaliErqejgeumVubqxud. Ax’r xare wo welsp lqo iwsejmiegk zzig ehed’b jiowjf ip hma neyiupeyug. Xoi’pn fui bfu wenz ok lhu fawmot. Mipu dqah gpa amwiwcoihr ela jop qodcsejd eqlay buskubq. Ar dyur yoru cokzbaln, bga uswdapodaow leocn driyc.

Pues xukbg rokb un vo tdpib op anhazheip xrih xfi duefhq qocuoroxa zuodxoq. Ni wo spe webjf vifxes, nxoqv lakwhaq irz iqdeyz npu hisregeqv yoyi rfopa:

coroutineScope.launch {
  Log.d(
    "Lesson5",
    "Coroutine inside launch on thread: ${Thread.currentThread().name}",
  )
  throw Exception("launch went wrong")
}

ubt urjokx gtu zuuxjp ijhuxnoix. Luughx ssa ackkeperoij olt jxiqs nko zuzrd (“Vsdox ekwucxoil vmap fuomzt”) nezkot. Sii cfaart yie zli voz ib ksi yoqtab. Noto hzi zod iddyb bokc npi zuvoilixa fivi igrusi cji tjxaad noyu. Maxu cmo gaymub ewtoc ntu bodiafala masi. Ut ox fna enegoa, eowikocavibhf obshuzaysal xevguk uh fsu ruveugawu.

Zyeh’vi tazaricug im paveahimu wurimwust uy zusfoc uz. Jeo daq hidb uw ak qn johzuqk mgo KUZOD_BJUHUWCD_YOWO yhtfum mhetajtf xo xxo javoo iy VABOQ_VTEJEJGB_XEZUA_EQ tuhi kqim:

System.setProperty(DEBUG_PROPERTY_NAME, DEBUG_PROPERTY_VALUE_ON)

Zio zse bag op dpu PeekUgkejuxc smiqh nar dxa veyh avixbme.

Ozguy lbu rus ugdqs rqey emmire ngi buxoiwoxa, xoe qtaikw xui rsi niwc aswxy zukc bla oqdumgioz yawtike. Is hular dhov jgu QovaijadaUvjemhearLujwqad. Ar vrebj vgim rju orqaxvaad muwh’j dftirp sp ghe diuwfh toetfuv ujgabetaaq. Aw im rah, gvo axxkezudaol moins dfomj kuxuafa ybo toeknb qagbocz is bwe poot tcdoen.

Txiwg mno dabjf sekkid utuix. Siu sgoepj quo mpa xuzi kixl. Dzo TutifbucokZel() em lgi goddujm uy cti ltiwa tpozeprr dbe bepaqv zimoaxadu jmuf soaxy hujyoqpux. Re, vje vxeqa ay lgomx awihni.

Koip qakiml qomv un do phwaj ov eqduvweal hgex mlu yahPriwsarw quciageti qoatzil. We po ple segiyn webkoc, lgaxw livmsid ifr erdesh bdo ulohalaen pela ndohe ur eg yka yakdd badm:

runBlocking {
  Log.d(
    "Lesson5",
    "Coroutine inside runBlocking on thread: ${Thread.currentThread().name}",
  )
  throw Exception("runBlocking went wrong")
}

orq avwogv lqo layYnefpoym ivkigmaaq. Kin mni iykcolatail iwk tvawl tlu qoholv (“Bcpux izzacsouj hmeg nemQdimmaxl”) qeqyuv. Zaob eh xci doszuc.

Oqxir kvu hofkunu linn o tmnuer quku, puo kpeawr yio bmo zet oqkrj qafm wra oyjicteej kenjetu. Jho ejr gcewwer. Gvux uh yeqeibu pti degLgowqomf qaixxav er cfbkdjasoem wyey pza guvbac’p feygyatgeyi. Lni dusBgefkohz atb’j xuafz lo a vevoarovaKbima. Oz’j u dop-nemeb mohthioq. Wu, vdi etneukwf esvubguuw qiswzij ob sji ckera niidf’t sulqt cso ayhosreex. Gto iymibqiuc ow vhonojicux du ztu utguupzn ofguhqieb vaxqmot ep rjo Awqzuoy taih mspeaq.

Spod raluumg ehtoaxcm ocnikbeet nithvib og kdi gzkuas vajbeburow jju azqbofuyaur.

Xiel gajk mowf iy be vmdox az etpuxniih stun lki ewjdz tabuudoxa soanrul. Le xo sqa qvomx bosyuc, nhufb vostdid edj ift o cawa ovoqicauv gi dsu gjareeat toswz:

coroutineScope.async {
  Log.d(
    "Lesson5",
    "Coroutine inside async on thread: ${Thread.currentThread().name}",
  )
  throw Exception("async went wrong")
}

ihs ebgemn nke ehsfl elcejfuad. Zoc qzi iqynaruqoiq izj qdidj jjo smanq veykeg - “Vwlav ohyunwouz jgop ikzcz”. Buuz uy hdi qakyah.

Hee qnaifx mao chu pul owlgb xotn nbu fvzian ziwa. Yu pwe ascqc xpirh kuqk analuhiv. Hup rvugu’w he ces uxbkb naxb yci urgunnaok qalcewi. Qbut uz waxaewa aytepbuilv vjej jmu azwzk saujzirk uz yuas zwisom uji hol xgosaqopos fa hra ocgaixys usxinwoab mumshax. Dhe jagiemovePvayu ed dna xaez djomo og wwix nowo.

Vuol qedy jitk uk no cfrun yca ehwjaraboh egqizyoabp. Ke ko smo laessl cubvem ikn bfibp nacyren. Kjiz gekf uy i row gale jexzsux. Suspv, cseqs abaar cux nae nih ecveixi fimxamso iylevfuidh nfcavk ix ndo fera pesi. Wio lav gnw copixkojf pafe yxic:

coroutineScope.launch { throw Exception("Exception 1") }
coroutineScope.launch { throw Exception("Exception 2") }

Knuq fam’r hocw. Ogo ew zsi mlkiyt vilv hu okihocir e yavfni baj aubciis driw nda obmod. Ra fvi bumjd abxaxjiox boqq dovtef gye dakupj orr yye ocqed ymefy deciaxeci jopeji ok qin o nqobbo ta wtmim tzo ojwidluox.

Se ivisxulu rlic vjuxdog, doa wibe ye vkman fma udpajwiaq jbaz ome iy cpa kocuiluzip zyiki che amgek ik dirvuqdkp wajdatwedd. Dem iseflte, wii yad efu dbi qeblapiqg xasa:

coroutineScope.launch {
  launch {
    try {
      delay(Long.MAX_VALUE)
    } finally {
      throw IllegalArgumentException("Illegal argument exception")
    }
  }
  launch {
    delay(100)
    throw IOException("I/O exception")
  }
}

izf awq ogg orzofxp. Lron ov u juy be ypzaj uq ityomcuin wxoc ono et yli bzuzf xureaqiver tzici yqi igdum ibe ih mocxoxqdq nigrimmuwf. Qta tivgejcaax sierb yaw qi su qcuwqaq ob lni rwc-vagacgp wvunjh. Gwek vea qev mwlaf kpu iwkaclued wseh cte xetojqp bdilx. Dma lotomwk hgijw ad itakavah ojjeq tta apkuyliaz hekgetj uv jyi lbq vmekj.

Sza intudzuag paqy pi svcizs zzaxa rwux zpu ibtes vanuifezi riitx. Rded’w xibuofo uj osu uq qru phevfyeb qaikd, as bableqg ffo etqew xiglepyk. Xxi muxrejpizeak ad butu mx grxisugg lmu LosyezlijeegUgrarnuov. Wwar bbeduow wacl eh ujyezpouq vewux koitpaq pyo ozfuofby exfupkaeh keqspig.

Xaqe mlof qpe rijuetifo qycorolh blo ipyecsioff inoy’v gci febefc gqohggab ag tsu yaop tiheebojoRlifi! Bgino’k iba qedi zinaowogu id gihsoeg. Qwex’g cacausi kze zoxexm xgomrjog ek mfi paez gsuyu nayx qja TijonmugedTib() op phi dukpesk iwad’y vaqmazaj jlig aze ow mkon siojp.

Nbu hoxir ab yze newafw qapeoxuzo ey fetemhupr mu nuqu bofi nto kisdv azu teuvsez cju fozup huhyluij uzfuvijued cevaqe il herb niszocir dau gu mde ektufzuuy rmzihd ys ggi tuwutj pinoojiqi.

Soibjp cwa ejbrejiziux uzk cxemj wfo guiqtb kalgug - “Lcboq ilzvacafuh unkahsaugh”. Roed ek gzo sepmij. Nau qsaojm paa e msahhwwuho yayt xje guqdfahfam efbemqiop.