How do I resolve connectionFailedError in volley in android studio? I don't know why it occurs and when it occurs.. how do I solve this issue? Android studio experienced people alone answer please
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Set up RequestQueue
The previous lesson showed you how to use the convenience method Volley.newRequestQueue to set up a RequestQueue, taking advantage of Volley's default behaviors. This lesson walks you through the explicit steps of creating a RequestQueue, to allow you to supply your own custom behavior.
This lesson also describes the recommended practice of creating a RequestQueue as a singleton, which makes the RequestQueue last the lifetime of your app.
Set up a network and cache
A RequestQueue needs two things to do its job: a network to perform transport of the requests, and a cache to handle caching. There are standard implementations of these available in the Volley toolbox: DiskBasedCache provides a one-file-per-response cache with an in-memory index, and BasicNetwork provides a network transport based on your preferred HTTP client.
BasicNetwork is Volley's default network implementation. A BasicNetwork must be initialized with the HTTP client your app is using to connect to the network. Typically this is an HttpURLConnection.
This snippet shows you the steps involved in setting up a RequestQueue:
KOTLIN
JAVA
// Instantiate the cache
val cache = DiskBasedCache(cacheDir, 1024 * 1024) // 1MB cap
// Set up the network to use HttpURLConnection as the HTTP client.
val network = BasicNetwork(HurlStack())
// Instantiate the RequestQueue with the cache and network. Start the queue.
val requestQueue = RequestQueue(cache, network).apply {
start()
}
val url = "http://www.example.com"
// Formulate the request and handle the response.
val stringRequest = StringRequest(Request.Method.GET, url,
Response.Listener<String> { response ->
// Do something with the response
},
Response.ErrorListener { error ->
// Handle error
textView.text = "ERROR: %s".format(error.toString())
})
// Add the request to the RequestQueue.
requestQueue.add(stringRequest)
// ... plese mark brainlist answer