CODEWITHSUNDEEP
androidandroid-asynctask
user4307131
user4307131

Reputation:

how to wait for completion of volley asynchronous task in android?

I am using volley library for API calls and getting response. But i want to wait for getting complete response from API then execute rest of code below Volley request. I tried it using interfaces and also using thread but it is not working.

Please give me some suggestion for implementing this? Thanks.

Upvotes: 0

Views: 1236

Answers (1)

AndiGeeky
AndiGeeky

Reputation: 11474

As you sending request in volley, It will call you back if request is successful or any error occurred :

So You need to call a method that contains code that should be executed after getting response :

Here I have commented where you can call that method :

 JsonObjectRequest jsObjRequest = new JsonObjectRequest(Request.Method.POST, url, js, new Response.Listener<JSONObject>() {

                @Override
                public void onResponse(JSONObject response) {
                    Log.e(TAG, "Successfully signed in : " + response.toString());
                    //put your code here
// added method call
 parseJson();
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    String json = null;
                    Log.e(TAG, "Error at sign in : " + error.getMessage());
                    // put your code here
                }
            });

Edited :

For executing code after json parsing :

Handler : IncomingHandler class

private static class IncomingHandler extends Handler {
        private WeakReference<MainActivity> yourActivityWeakReference;

        public IncomingHandler(MainActivity yourActivity) {
            yourActivityWeakReference = new WeakReference<>(yourActivity);
        }

        @Override
        public void handleMessage(Message message) {
            if (yourActivityWeakReference != null) {
                MainActivity yourActivity = yourActivityWeakReference.get();

                switch (message.what) {
                    case 0:

                        // add your code here
                        break;
                }
            }
        }
    }

Create instance of it in onCreate()

// Declaration of handler
 private IncomingHandler incomingHandler;
 // initialize handler
        incomingHandler=new IncomingHandler(MainActivity.this);

Sample parse json method and sending message using handler :

 public void parseJson() {
        for (int i = 0; i < 50; i++) {
            System.out.println("Printing :" + i);
        }
        incomingHandler.sendEmptyMessage(0);
    }

Thanks.!!

Upvotes: 1

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