RetrofitClient | 基于Retrofit2.x和Rxjava2.x封装的请求工具类 | Reactive Programming library

I am using navigation component in my app I have 2 fragments one fragments list of items and another shows detail of an item when user clicks on an item in fragments 1 it goes to detail fragment and when I switch back to first fragment then all the listing duplicates again.

Below is my code:

CakeFragment.java

I want to design API calls in such a way that it will be easy to handle success and failure responses easily from one place (instead of writing same code of call function for all APIs)

Here are the scenarios which I want to consider.

1. Handle success / failure and error responses like 4xx, 5xx etc of all APIs at one central place.
2. Want to cancel enqueue requests and also stop processing response if request is already sent in case of logout (because response parsing will modify some global data of app)
3. If access token has expired and 401 response received from cloud, it should get new token and then call API again automatically with new token.

My current implementation is not satisfying above requirements. Is there any way to implement API calls which satisfy above requirements using Retrofit ? Please suggest me a good design for this.

Here is my current implementation :

1. ApiInterface.java - It is an interface which contains different API calls definitions.
2. ApiClient.java - To get retrofit client object to call APIs.
3. ApiManager.java - It has methods to call APIs and parse their responses.

ApiInterface.java

I am working with an Android Recyclerview with Retrofit, it is working without any Post Data. I need to post some data in my current Code.

Below is my Current ApiInterface

i'm using retrofit2 and Rxjava

the crash occured when application recieved 400 error code response but i don't know where to handling error

interface "IMyService"

I have a trouble with my recyclerview. I get the list using retrofit, i acquire all the data, as shown in logs:

i made interface like this in "TestService.java"

I am trying to fetch data using Retrofit2 but I am failed to get response its showing below error:

I am trying to post user details to create new user in the database using POJO classes. The API accepts raw JSON as post requests. The response that I am receiving is "Response{protocol=http/1.1, code=400, message=, url=my api url}"

I am using POJO class CreateUser to create details for my user and passing it to Retrofit API Interface

My API definition is as below, CreateUserResponse is the response POJO class to store the Retrofit Response

My problem seems very simple but I somehow can't get it working. I want to wait for the array to be filled after the api response.

Starting the api request