How to handle error callbacks using Fast Networking Library in Kotlin Android

How to handle error callbacks using Fast Networking Library in Kotlin Android.

Here's a step-by-step tutorial on how to handle error callbacks using the Fast Networking Library in Kotlin for Android:

First, make sure you have the Fast Networking Library added to your project. You can add it by including the following dependency in your app-level build.gradle file:
```
implementation 'com.amitshekhar.android:android-networking:1.0.2'
```

In your Kotlin file where you want to make network requests, import the necessary classes:

import com.androidnetworking.error.ANError
import com.androidnetworking.interfaces.ErrorListener

To handle error callbacks, you need to implement the ErrorListener interface. Create a class that implements this interface:

class MyErrorListener : ErrorListener {
    override fun onError(anError: ANError) {
        // Handle the error here
    }
}

Inside the onError method, you can handle the error according to your requirements. For example, you can display an error message to the user or log the error for debugging purposes. Here's an example that logs the error message:
```
override fun onError(anError: ANError) {
    Log.e("NetworkError", "Error: ${anError.message}")
}
```

Now, when making a network request using the Fast Networking Library, you can attach the error listener to handle any errors that occur. Here's an example of making a GET request and attaching the error listener:

AndroidNetworking.get("https://example.com/api/users")
    .build()
    .getAsJSONObject(object : JSONObjectRequestListener {
        override fun onResponse(response: JSONObject) {
            // Handle the successful response here
        }

        override fun onError(anError: ANError) {
            // Handle the error here
        }
    })

In the above example, if an error occurs during the network request, the onError method of the error listener will be called, allowing you to handle the error accordingly.
You can also attach the error listener to other types of network requests, such as POST or PUT requests. Just make sure to use the appropriate listener interface for the request type (e.g., JSONArrayRequestListener for a request that expects a JSON array response).

That's it! You now know how to handle error callbacks using the Fast Networking Library in Kotlin for Android. You can customize the error handling logic in the onError method of your error listener class to suit your specific needs.