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Detect offline error in Retrofit

We will need to handle and detect the offline error in Retrofit call, It is a basic requirement when we are implementing Offline Application or visible network error view.

How can it be possible?

Essentially, we will create a class that implements Interceptor so that we can perform a network connectivity and checks before executing the request.

NetworkConnectionInterceptor interceptor will handle every APIĀ call, when, if no network is found then it interruptsĀ the normal flow of execution so we will create our own NoConnectivityException Exception class. that throws an Exception.

Add NetworkConnectionInterceptor with our retrofit Service client.

Finally, Detect Offline connection Exception in our Activity, Handler or Fragment.

 

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Comments (2)

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  • heymonheymon
    where exactly to put onFailure?
    • ashwini gupta
      onFailure => It is a method of Retrofit Callback Interface and you detect your custom offline exception and do whatever you want. I am getting information from our database.
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