Cancel All Volley Requests Android

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At the moment i´m using mRequestQueue.cancelAll(getActivity()) at on stop method in a fragment but apparently when i move the phone from landscape to portrait it is still returning the data made in the request but causing crash because the holders for the data dosent exist anymore. any sample code of how to do it properly?

Instead of using a tag for cancelAll, make an all-pass RequestFilter.

mRequestQueue.cancelAll(new RequestQueue.RequestFilter() {
    @Override
        public boolean apply(Request<?> request) {
            return true;
        }
    });

EDIT: This cancels all Requests from all activities/fragments, and doesn't work favorably with the Activity Lifecycle. The best way to manage this is to add a String tag unique to your fragment.

Cancel All Volley Requests Android, The original change adding this was at https://android.googlesource.com/ cancelAll is a danger method which will to cause all of requests� Cancel All Volley Requests Android. Answer:. You should set the tag to an object, not a method. By setting the tag to getActivity() , you are asking Volley to use a dynamic method Answer:. Answer:. Answer:. Answer:.

You should set the tag to an object, not a method.

By setting the tag to getActivity(), you are asking Volley to use a dynamic method call on the main thread as a reference to the request which is happening on a background thread.

So when the background thread is trying to cancel the requests, the activity could already be dead.


Rather than using getActivity(), use this or some other object or string.

This is good practice for any Tag, and you should also beware of leaking your activity.

Solutions:


You could use the current object:

request.setTag(this);

or, the static class object

request.setTag(MyFragment.class);

or, as a constant in a separate class:

request.setTag(CustomTags.LIST_REQUESTS);

CustomTags.LIST_REQUESTS being the best in my opinion (less chance of leaking activity)

Something like this:

public class CustomTags
{
    public static final String LIST_REQUESTS="CustomTags:LIST_REQUESTS";
}

Update

I just noticed I was making a mistake in tagging my requests in Volley (though the solutions I posted above are fine).

I still thought I would update here an important thing to keep in mind. Volley tags by identity not value.

Thus, it is important to keep in mind that a tag that is merely the same string value, and not the same object itself, will not be recognized as the same tag.

It's similar to the difference between

String a1 = "A";
String a2 = "A";
a1 == a2;  //evaluates to false

String a1 = "A";
String a2 = "A";
a1.equals(a2); // evaluates to true

RequestQueue.cancelAll doesn't use Object.equals � Issue #152 , Cancels all requests in this queue with the given tag. Tag must be non-null * and equality is by identity. */ public void cancelAll(final Object tag) { if (tag == null)� Volley automatically schedules all network requests such as fetching responses for image from web. Volley provides transparent disk and memory caching. Volley provides powerful cancellation request API for canceling a single request or you can set blocks of requests to cancel. Volley provides powerful customization abilities.

I know this answer comes in late, but in case anyone else is having this problem:

In my implementation the Tag was being set (and overwritten) at the point where the request was added to the queue.

So despite that I was cancelling the request with my Tag, the tag on the request queue was not the same (as it was previously overwritten) and it was not cancelled.

Logging the requests running and printing out the tags, led me to the solution:

mRequestQueue.cancelAll(new RequestQueue.RequestFilter() {
    @Override
        public boolean apply(Request<?> request) {
        Log.d("DEBUG","request running: "+request.getTag().toString());
            return true;
        }
});

com.android.volley.RequestQueue.cancelAll java code examples , If you were using the HTTPURLConnection library, you would need to track all requests and cancel them manually. This recipe will show you how easy it is to� Send a simple request. Add the INTERNET permission. To use Volley, you must add the android.permission.INTERNET permission to your app's manifest. Without this, your app Use newRequestQueue. Send a request. Cancel a request.

Which tag did you use when making the requests? If you didn't set a tag on each of your requests it may never work. As far as I see, Volley does NOT automatically set a tag for your requests

Canceling a Volley request, cancelAll(new RequestQueue.RequestFilter() { #Override public boolean apply( Request<?> request) { return true; } }); EDIT: This cancels all Requests from all� Unfortunately, there is almost no documentation on Volley. So, I put together code snippets on how to make Volley HTTP Requests (GET, POST, PUT, DELETE). Setting up Android Volley Library. Setting up is straight-forward. Clone the Volley project from here and then import the Volley into project. A comprehensive tutorial on setting up can be

If you add request to queue from framgment, you should cancel like this: mRequestQueue.cancelAll(this) . And sorry if it didn't work - i didn't test this solution. But i hope this help to you.

Send a simple request, Volley has a powerful API for canceling requests. cancelAll("Sample"); // Cancels all requests with tag� Volley is an HTTP library that makes networking for Android apps easier and most importantly, faster. Volley is available on GitHub. Volley offers the following benefits: Automatic scheduling of network requests. Multiple concurrent network connections. Transparent disk and memory response caching with standard HTTP cache coherence.

Cancel All Volley Requests Android, Volley Request Manager Why I choose Volley, and not OKHttp(or another Http lib) instead? Because cancelAll(tag); } public void cancelAll(RequestQueue. Although Volley is a part of the Android Open Source Project(AOSP), Google announced in January 2017 that Volley will move to a standalone library. It manages the processing and caching of network requests and it saves developers valuable time from writing the same network call/cache code again and again.

Android Volley, Cancelling the requests. Advantages of using Volley: All the task that need to be done with Networking in Android, can be done with the help of Volley� In this android programming source code example, we are going to set request timeout in Android Volley. You can copy and adopt this source code example to your android project without reinventing the wheel. Below is a step by step source code to set request timeout in Android Volley. activity_main.xml

Volley Request Manager, Cancel All Volley Requests Android (6) . At the moment i´m using mRequestQueue.cancelAll(getActivity()) at on stop method in a fragment but apparently when i move the phone from landscape to portrait it is still returning the data made in the request but causing crash because the holders for the data dosent exist anymore. any sample code of how to do it properly?

Comments
  • Did you check tour activity didn't change ? I believed activity is destroyed and then rebuild when rotating. And as Activity seems to be your tag, it's not the same tag anymore.
  • In Kotlin: mRequestQueue?.cancelAll({ true })
  • requestQueue?.cancelAll { true } is more Kotln ;)
  • I would like to thank you for pointing out the String compare concept which I should be aware of. I stuck in a problem that I believed I called RequestQueue.cancelAll(final Object tag) to cancel all my requests that tagged with Activity.toString(), but didn't work. The tag comparison in cancelAll(final Object tag) method is actually using request.getTag() == tag as a RequestFilter which I didn't notice. Now wrote a request.getTag().equal(tag) as RequestFilter fixed my problem.
  • @pjco shouldn't setTag() be called on the request itself and not on the queue?
  • Yes I think you are correct I will update the answer. My variable names imply it is the cue, which is not what you tag.
  • @SilviaHisham Answer updated, thank you for noticing that!
  • i setted the tag as mRequestQueue.setTag(getActivity()); , but it didnt worked.
  • I haven't used this functionality myself, but I think that you should put the tag on your Request object, not the Queue.
  • this works only if you had set tag for all the requests :( didnt work for me