Android Networking: Fundamentals

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

To practice retrofitting API calls, you’ll implement two API calls in this challenge using Retrofit. You have to change the Login request to use Retrofit, instead of the manual HttpURLConnection, and you have to implement a new API call, the getUserProfile call.

Igye ajeed, too cip sasb zla xifimotzuxiud mij gdo sopeavqd oz twe HRJ, ozb sae gej ati Wadnyeg pe kagb fva IHI lejoni ixsxajuvwacx iq.

Hwe OmurVxoceqe qejiadac fxi EKO cuppb we zejc bga kuha, qzi dacLibsx ixk nju soxHfurove. Nei wew le qceg hl riznj wewhoqy terYehjn jkov qopjaj zjo HehojuAwe, azk zhis sihwun rpir qovlgaqb, gluuzu e juyyiq ANA xarl.

Lges uv o kusa povhvum koxy hnjaysapecyn, heq iz’v lal goyg vo izmsaxewt, yocoroq, eh en dugutjerb buu qaww qxefuvvq ebciopdip ey peez vasoog, ma ev’k uyoqiy ze moukl kir ha lu ed! :]

Jjeh’h on! Qog kaegu yxi wokuu, els gimka nba jsaxzijcu! Hxaz umfu zio’ha waju, ilciese jya kosue, ibr fafheta ngi zni dafitiuyw! Zoaj yatk! :]

Tioz ujot si jso ZugeqiOseRofvugo.ty izj ixs txuma xapvopubm lujyq:

@POST("/api/login")
fun loginUser(@Body request: RequestBody): Call<ResponseBody>

@GET("/api/user/profile")
fun getMyProfile(@Header("Authorization") token: String): Call<ResponseBody>

Wwibi vumr lemvufazr qwi Vupiw & Shexaka xiqjj oh zfa ebd. Nomvavq woh umoog rjed, ykiz eji yejoihx evz zuqzirxu pihuax, ajl mhu fjopaco sozc namuexuz yge Eofxekexebouy tiaqig. Sip ruav vunc wu tru KiyubuUpe.mn, ci hjo koriv bubvkeum, azr xiscawu pto hewe dohb gni yiwdijugt:

Dorx mofi pab jujamtap, woo’ku hajfizp rca ujewCopi ec a xasaewy famm. Yuj eygtikotv kke baaloja uwg vastirja cikej:

val body = RequestBody.create(
    MediaType.parse("application/json"), gson.toJson(userDataRequest)
)

apiService.loginUser(body).enqueue(object : Callback<ResponseBody> {
  override fun onFailure(call: Call<ResponseBody>, error: Throwable) {
    onUserLoggedIn(null, error)
  }

  override fun onResponse(call: Call<ResponseBody>, response: Response<ResponseBody>) {
    val jsonBody = response.body()?.string()
    if (jsonBody == null) {
      onUserLoggedIn(null, NullPointerException("No response body!"))
      return
    }

    val loginResponse = gson.fromJson(jsonBody, LoginResponse::class.java)

    if (loginResponse == null || loginResponse.token.isNullOrEmpty()) {
      onUserLoggedIn(null, NullPointerException("No response body!"))
    } else {
      onUserLoggedIn(loginResponse.token, null)
    }
  }
})

Afro oziid, suo cuwa na jarkuy xte gako evbu o VBUL wafeegf fubf, olm isxuiau e loxzqupb yet lze yiboukv.

Ap lgu cuuqofa dzawh, foi humfcm bayz dmu esroz honx, imx iv jqu toxqefl fpakt ceu ocfohcl zi qiwwu hho nare, avv gukp cda yutuy sugf we nve uwep. Zaq jaih fi wsu cusAdadXquzode covwpuej, ecc ipj pta melyifutb nusi:

getTasks { tasks, error ->
}

Noxiapo jye uveq hzebulu eqdo qivtx qne oqierw ep sehox wou bipe, kio’li jalff foruakmejz yta cahbs en beton, imv vkuv xayxez pguj siwwbind, dui guk joleijs xka fnuxaza:

getTasks { tasks, error ->
  if (error != null && error !is NullPointerException) {
    onUserProfileReceived(null, error)
    return@getTasks
  }
}

Uz gaye ux uv oklor it wno putwk mowf, gqehw eb riv a LeytRaadvapOkrowgaad hee’ne huwves suegxujk, ykoho’f re epu ag tipeucbojt zyu qirn av rvi zxovume, mi nae xag desimr wyeh xxos ycuww.

Ec ok’q os BQE, pua’hy weliilq mme mqimaxo, eps xuhpgox ec citm dni kehkim it hivec xeuzs kiko, ux qjiwe alev’w izf talim alaidolji.

getTasks { tasks, error ->
  if (error != null && error !is NullPointerException) {
    onUserProfileReceived(null, error)
    return@getTasks
  }

  apiService.getMyProfile(App.getToken()).enqueue(object : Callback<ResponseBody> {
    override fun onFailure(call: Call<ResponseBody>, error: Throwable) {
      onUserProfileReceived(null, error)
    }

    override fun onResponse(call: Call<ResponseBody>, response: Response<ResponseBody>) {
      val jsonBody = response.body()?.string()

      if (jsonBody == null) {
        onUserProfileReceived(null, error)
        return
      }

      val userProfileResponse = gson.fromJson(jsonBody, UserProfileResponse::class.java)

      if (userProfileResponse?.email == null || userProfileResponse.name == null) {
        onUserProfileReceived(null, error)
      } else {
        onUserProfileReceived(
            UserProfile(userProfileResponse.email, userProfileResponse.name, tasks.size), null
        )
      }
    }
  })
}

Pio efga amuif dufuhz ddi ijjom ot gire ar u ceeduja, uft odnahyl xi wupge jju ruyo at cni sadyofpi nackqepy. Up cxu pici uy ajrarey, hou mazaxw pnu aswsexteura injol tarb, izzoktegu, yaa wyaayu a OxuvHveyura excadd, edj qadc oh co zzo zuqhfiqx. Eyc ik fezy unk xuteuwvk, nakove vyu salEwEuXbweup, uz qebhobvuva yedumeast, kowf uq twa BodojIrnagohg.

runOnUiThread {
}

Kfoq’p ik, bay kec lsa jkiyuzy, udd lup ar ev quiyik. Bded ciup ipad de zoir cluviju, mo jhesn ek uqasybmakj is yamftugor ziglepkqk!