Advanced Android Networking
OkHttp Interceptors, Authentication, Cache, Certificate Pinning, WebSocket, GraphQL with Apollo Client
1What is an Interceptor in OkHttp?
What is an Interceptor in OkHttp?
Answer
An Interceptor is a powerful OkHttp mechanism that allows intercepting, observing and modifying HTTP requests and responses. It executes between the application and the network, allowing adding headers, logging, handling authentication, etc.
2How do you add an Interceptor to an OkHttpClient?
How do you add an Interceptor to an OkHttpClient?
Answer
Use the OkHttpClient builder with the addInterceptor() method for application interceptors or addNetworkInterceptor() for network interceptors. Interceptors are executed in the order they are added.
3What is a Logging Interceptor used for?
What is a Logging Interceptor used for?
Answer
The Logging Interceptor (HttpLoggingInterceptor) allows logging all HTTP requests and responses for debugging. You can configure the log level: NONE, BASIC (request line), HEADERS (with headers), BODY (with full body).
How do you create an Authentication Interceptor to add a Bearer token?
How do you add a custom header to all requests with an Interceptor?
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