The Ultimate Retrofit Crash Course

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In this video you will learn everything you need to know about Retrofit in Android.
00:00 - Introduction
03:00 - Building the Layout
07:42 - Setting up the API Interface
14:19 - Query Parameters
15:29 - Posting JSON data
17:52 - Creating the Retrofit Singleton
20:38 - Creating the RecyclerView Adapter
25:08 - Making the Request & Error Handling
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Пікірлер: 117

@codinginflow 3 жыл бұрын

Wow just 9 days ago I was thinking about this exact topic and now you make a video about it! You can read my mind

@amitmondal7427 3 жыл бұрын

Are you comedy me 😂😂😂

@ElliotCoil 3 жыл бұрын

then create net tutorial with addition error body handling.

@yilmazbingol4838 2 жыл бұрын

exactly 9 days :). you really calculated

@anonymoususer8849 Жыл бұрын

He always comment to indirectly self promote his channel 😂

@lalala6798 Жыл бұрын

Great tutorial! Ive been working in Android for a few years now and actually never built an app from scratch. This tutorial has been amazingly helpful for me to get my fundamentals down. I love your explanations for everything you do in such a clear and concise way. Excited to go through the rest of your tutorials!

@AbdulWahab-kk1hs 2 жыл бұрын

Very concise, to-the-point and understandable. Keep up the good work Philipp!!

@ninelivesforge6432 Жыл бұрын

This was a great tutorial, previous to this one I did the shopping list app tutorial, which is the oldest tutorial on your channel, and it was a little difficult to understand how all the classes work together, but here everything is so much more clear and better explained. Thank you so much for your videos, love your channel!

@rahmakthiri9818 3 жыл бұрын

Thanks a lot Philipp ! This tutorial is exactly what I was looking for

@spbs-lb1lo 3 жыл бұрын

OMG you won't believe it I was just working on Retrofit and your Course came alone ........ What a timing!!!

@harishussain9003 3 жыл бұрын

I am the same guy 🤣 but with different account love your videos ❤️

@rahulbhavani6160 3 жыл бұрын

Happened with me many times, seems like Phillip have some secret super natural power 😁

@ashishgautam2842 3 жыл бұрын

Its Law of attraction bro nothing else, we all attracted by what we need

@PhilippLackner 3 жыл бұрын

Nah, I really have a secret natural power

@filip_g 3 жыл бұрын

Same here :D

@imnithish 3 жыл бұрын

I was working on Retrofit. The same time you posted this. I can't believe this. You're the best!

@PhilippLackner 3 жыл бұрын

Thanks, happy to help!

@kitcat2449 2 жыл бұрын

Awesome content, super easy to follow. Thank you very much!

@MatthewSmith-mt3kz 2 жыл бұрын

Great tutorial, you're videos are my go to when learning something new.

@seyyedmahdihosseini4395 2 жыл бұрын

if not the best but definitely one of the best and complete tutorial i have ever seen, and a sincere apology if i can not like them all at once, but i will keep making tutorials

@aginamabednego 2 жыл бұрын

Thank you so much Phillip. Really enjoyed this course

@CodeWithTahaCWT 2 жыл бұрын

Your videos are so interesting, I can communicate with them and understand those deeply. Thanks

@mohancena8970 2 жыл бұрын

Well done brother 👏👏👏 It's really helpful to me ❤️ Thank you 😊 keep learning and Teaching 😊

@stasleonov5196 Жыл бұрын

Philipp, you are the best teacher, thank you so much.

@bhavyavarmora4049 3 жыл бұрын

Great video on Retrofit...thanks for making this crash course and you can make a video on ROOM DataBase in detail so it would really helpful for everyone. Once Again thanks for this video man.

@Another0neTime 3 жыл бұрын

Awesome video. Thank you!

@oleg12395 2 жыл бұрын

I know English not so good, but your tutorials so simple to understand ... Thank you sansei )

@akmoudgil 2 ай бұрын

Nice tutorial sir! Thanks a lot!

@interseting-funnyvids 3 жыл бұрын

Thanks, Philipp.Your way of teaching is very good

@PhilippLackner 3 жыл бұрын

Thanks! :)

@rahulbhavani6160 3 жыл бұрын

Thank you Phillip, great video as always 👌👍

@PhilippLackner 3 жыл бұрын

Thank you!

@osamaghazal 5 ай бұрын

Great Video, Thank you very much

@brucebane7401 3 жыл бұрын

AMAZING BRO YOU ARE THE BEST !!!!

@erthree95 3 жыл бұрын

Great tutorial. Learned a lot from your news mvvm series. However, there is more to it when it comes to HTTP calls like: Passing form data, Uploading files, Headers and Interceptors to name a few. Hope you will make an extended tutorial that covers those. Handling JWT tokens and maybe storing them and auto appending them to the authorization header with Retrofit could be a nice tutorial.

@alextl97 3 жыл бұрын

I agree

@girishparate6410 3 жыл бұрын

I love this Crash Course videos 😁

@mustafaammar551 3 жыл бұрын

Thank you bro Very cool video Wish you all the best👍👍👍👍

@user-gi4no6gn7m 3 жыл бұрын

Philipp you are best. This is a great video

@akashgandhi1224 3 жыл бұрын

Thanks for the video 😊

@Sam-yb9ut Жыл бұрын

Super, thanks

@valik1495 Жыл бұрын

Good job!

@Sc2MooDy 3 жыл бұрын

Very good content, thank you very much and keep it up!

@PhilippLackner 3 жыл бұрын

Thanks, will do!

@VenewebTV Жыл бұрын

Excellent video, very didactic, regards from Caracas, Venezuela

@AtheistMolHed Жыл бұрын

you're awesome, thank you!

@axelasa277 3 жыл бұрын

Please make more and more videos on Kotlin. I'm from Kenya And I have to give it to you mate. this is awesome stuff. I've watched 3 of your videos, this being the fourth and I must say you are the Bomb man. cheers @Phillipp Lackner

@PhilippLackner 3 жыл бұрын

Thanks man!

@elnino9139 Жыл бұрын

Hey Phillip. Thanks first for your crash course about Retrofit. I wanna ask if I'm learning now with your course, will there be a big different from the nowadays Retrofit. Or maybe it is still useful. I'm apllying my internship so it would be bad if this technologie is old

@saiyadymhn 2 жыл бұрын

Good tutorial for Retrofit

@sijanneupane 2 жыл бұрын

damnnn! so here was the video! I scrapped almost the entire internet after News API App and this video was hiding here!

@akiyai 2 жыл бұрын

Hi Phillip, can you tell me where can I find ALL your available courses? I have just registered in your site, but I can see only 4 of them. I guess that is not all.

@shawnf3495 2 жыл бұрын

What about filtering out null or blank values? Let's say in that Json collection that title is a nullable value and it let's also say that it can be a blank value. Does retrofit or Gson automatically filter null values or blank values or do we implement a custom json adapter to handle that? Also, let's say we wanted to sort and group the json response. For example, let's say I wanted the json response sorted by id first, then userId, and then grouped by completed. Where would I do the sorting and grouping? Is that also something we would handle in custom adapter or would we do that in our repository or is it something we do in our viewModel?

@mehrdaddorari1205 2 ай бұрын

How to prevent Retrofit from encoding request Body. In Query I know I can add "encoded = true" and it works, but in body Retrofit adds / to my request body and it doesn't work with my Api.

@soggytonispuri6901 6 ай бұрын

Hello sir, thank you for your great tutorial, it's just that, I had a lot of trouble setting up an API connection that requires an API-KEY, it was a traumatizing experience of self doubt and brain rot

@philiplo225 Жыл бұрын

I get a unresolved reference error for ItemTodoBinding even though viewBinding is set to true. How do I fix this?

@lucianocassani9899 2 жыл бұрын

Hi, I'm using this video as guide for a little app, but I get this error "expected being array but was being object" I know that the problem is that the API is returning an object, but I can't figure out how to solve it. Thanks!

@PandaTop. 3 жыл бұрын

This part of the text does not work in fragment ((What do I need to change ?? lifecycleScope.launchWhenCreated { val response = try { RetrofitInstance.api.getPhotos() }catch (e: IOException) { Log.e(TAG, "IOException, you do not have an internet connection") return@launchWhenCreated }catch (e: HttpException) { Log.e(TAG, "HttpException, unexpected response") return@launchWhenCreated } if(response.isSuccessful && response.body() != null) { picsumAdapter.photos = response.body()!! } else { Log.e(TAG, "Response not successful") } } response.body () !! highlighted in red. I did everything as shown in the video, but through fragment at not activity What should I do ??

@neodycreare Жыл бұрын

Thanks for the tutorial; question: how do we add code to call an API that requires putting in a bearer access token?

@abuiman5251 3 жыл бұрын

Thanks 👍🏻

@damercy 3 жыл бұрын

Great tutorial Philipp! 😀 Is there a possibility for a crash course on retrofit but for a production-grade app? Would love to learn about the best practices on using retrofit in a production-level application!😅

@PhilippLackner 3 жыл бұрын

There are no secrets, you wouldn't do it much different than here. For a real app where I use retrofit I have a course on my website here pl-coding.com/courses/powerful-kotlin-rest-apis-with-ktor/. You learn to build your own API as well

@gulfappdeveloper2849 3 жыл бұрын

I am expecting this course, Thanks

@PhilippLackner 3 жыл бұрын

Hope you like it!

@pembatamang8233 3 жыл бұрын

how do I show download progress ? I couldn't understand how interceptors work.

@coreyorndoff9417 2 жыл бұрын

Does anyone know of a good video or any reference that helps with sending an image to the server using retrofit?

@AppleMenace 3 жыл бұрын

The Hero everyone needed 💪

@rimo8833 Жыл бұрын

While making the RetrofitAPI i am getting this error in the singleton object: Property delegate must have a 'getValue(RetrofitInstance, KProperty<*>)' method. None of the following functions is suitable: Anyone has any fix for this??

@makasiparsad 4 ай бұрын

This is great. How would you incorporate retrofit for database operations using a remote turso /libsql database?

@hassanrana998 2 жыл бұрын

Thanks for this great tutorial A query:i have suspend function in interface which returns Response so when i get that response and call function .string() it gives me warning "Inappropriate blocking method call" Could you please tell me what is the best solution for this?

@athithyaparamesh8251 2 жыл бұрын

17:09 Can you please share the link of the video for POST request in retrofit?

@TheDeeStain 3 жыл бұрын

It's just crazy how in javascript you use a simple fetch("") or axios but in android it takes data type models, instance of retrofit api interfaces repos viewmodels etc..

@TheIsuruathukorala Жыл бұрын

Very informative tutorial. I code and practice my self too. But I wonder how this do with Compose layout ? 🤔 I haven't seen any one have done with. Could you make one ? Thank for amazing tutorials.... Hope to learn more....

@hianuyesperidiao5499 2 жыл бұрын

good job

@dashaxedit 3 жыл бұрын

Right at the time. Thats, what I wanted. Thanks from Russia

@PhilippLackner 3 жыл бұрын

Glad it helped!

@dashaxedit 3 жыл бұрын

@@PhilippLackner I have got a question. How do I refresh data? Like if it's a currency app, I do need to update values each minute. Thanks in advance)

@footballCartoon91 Жыл бұрын

@9:24 seems to me that we need to provide an interface to Retrofit package so that it knows what type of data structure that it needs to parse into the appropriate components of the data..but why they want an Interface? does interface cannot be instantiated and the body of the interface's function should be empty i.e it needs another class that inherits from the interface and write the code that is required

@audhil 3 жыл бұрын

why still with GSON? not Moshi? @phillip

@FelipePalma14 3 жыл бұрын

Hey Philip can you explain about prominent disclosure location android and new google's policies? Ty

@iam-learning6374 3 жыл бұрын

Hey buddy - Could you please make one video on clean architecture and solid principles? thanks in advance.

@user-ll5cd6fc1m 3 жыл бұрын

Thanks your great KZfaq!! from JAPAN🎌🎌🎌

@PhilippLackner 3 жыл бұрын

Thanks for watching!

@andreytsybylsky3526 3 жыл бұрын

thanks for the content. You explain very coolly, I am delighted. I am thinking of signing up for your KTOR course. Keep doing the same cool. I advise everyone to subscribe.

@deepsheth1086 Жыл бұрын

why you donot use volley for same purpose?

@jafartemirov7812 3 жыл бұрын

Philipp make an video about Scoped Storage, such as capturing image from camera and from gallery, that would be brilliant

@axelasa277 3 жыл бұрын

I could share my github project on this

@iziaulla 8 ай бұрын

I wish that you could do one video of Retrofit using POST. I have the Json from my Android just the way that I like it, but it doesn't post to server for some reason.

@paulchibamba Жыл бұрын

Does retrofit handle cookies?

@demigod6190 3 жыл бұрын

you got subscribers from Traversy Media! Anyways, Great video!

@PhilippLackner 3 жыл бұрын

Awesome, thank you!

@mrpi230 3 жыл бұрын

Thank You, can you also make a video on " how to make a android vpn app".

@hariomsharma1202 3 жыл бұрын

Please make a video on Web Sockets with Android, there is not much details anywhere about this topic.

@jerrymatera 3 жыл бұрын

Satisfied. But don't the Todo data class need some annotations.

@anudeepananth 3 жыл бұрын

OMG.... the timing for this course couldn't be more accurate than this for me....

@PhilippLackner 3 жыл бұрын

nice :D

@RedstoneHair Жыл бұрын

I don't have a list of objects tho, just one object in my json

@anl8291 2 жыл бұрын

hey bro your courses are very nice but my country's currency is so worthless Half of my country's minimum wage, it would be nice if you could make a discount

@miitter 2 жыл бұрын

Hiii, thanks, please make a video with @path parameters :(

@fliamachado 2 жыл бұрын

hi, Is alway a pleasure to learn from you, can you shortly explain why the change in this-> "ResultViewHolder(binding: PlaceItemBinding)" to this: "ResultViewHolder(val binding: PlaceItemBinding)", what is the difference when declaring constructor parameters ??

@PhilippLackner 2 жыл бұрын

the first approach only makes binding visible for the class and init block, but not inside functions and it doesn't expose it. So you couldn't write viewHolder.binding from somewhere else in the code. With the second approach this works thoughx

@pietro1901 2 жыл бұрын

Thanks I struggled, did not pay attention on this

@asifiqbal1261 3 жыл бұрын

Make videos on Better Android Apps Using MVVM with Clean Architecture, and also Unit testing.

@PhilippLackner 3 жыл бұрын

I have all that

@somith16 3 жыл бұрын

pls make a video on parsing the data also from json to gson and vice versa

@PhilippLackner 3 жыл бұрын

I don't get the question

@somith16 3 жыл бұрын

@@PhilippLackner like this one type of example @TypeConverter fun toProfileData(value: String?): ProfileDataResponseModel? { return Gson().fromJson(value, ProfileDataResponseModel::class.java) } @TypeConverter fun fromProfileData(value: ProfileDataResponseModel): String? { return Gson().toJson(value) }

@literasikeamanandigital4771 Жыл бұрын

I hope there is update to jetpack compose

@dastanikus 18 күн бұрын

This is not the ultimate. Just a basic super simple crash course. To make it ultimate you better go through docs and implement all possible cases including prod like setup and in the end we have no any other questions about Retrofit.