CODEWITHSUNDEEP
javaandroidandroid-asynctask
lakshmi narayanan
lakshmi narayanan

Reputation: 11

AsyncTask throwing Error "Caused by java.lang.ClassCastException: java.lang.Object[] cannot be cast to java.lang.Void[]" on doinbackground()

My Asynctask is throwing this error

"Caused by java.lang.ClassCastException: java.lang.Object[] cannot be cast to java.lang.Void[]"

code:

protected Object doInBackground(Void... params)

on above method for only specific user not for all users.Can any one tell does passing void like "AsyncTask Void,Void,Object" is cause for my problem? below i attach my code 

private class RegisterTask extends 
AsyncTask<Void, Void, Object>      
       {

    protected void onPreExecute() {
        super.onPreExecute();
        }
    }
    protected Object doInBackground(Void... params) {
        return null;
    }
    protected void onPostExecute(Object result) {
        super.onPostExecute(result);
    }

}`

Upvotes: 1

Views: 708

Answers (2)

Rizwan
Rizwan

Reputation: 2437

You can create the AsyncTask with an Object as a parameter even if you not used it would not harm

private class RegisterTask extends AsyncTask<Object, Void, Object>      
    {

    protected void onPreExecute() {
        super.onPreExecute();
        }
    }
    protected Object doInBackground(Object... params) {
        return null;
    }
    protected void onPostExecute(Object result) {
        super.onPostExecute(result);
    }

}

Alternate is the way you have been initializing your AsyncTask is it a generic way like ?

//Change
AsyncTask asyncTask = new  RegisterTask (...);

Then please remove above and create your AsyncTask with the correct parameter declaration side.

AsyncTask<Void, Void, Object> asyncTask = new  RegisterTask (...);

Upvotes: 1

Muhammadjon
Muhammadjon

Reputation: 1506

Check the parameter passed to new RegisterTask().execute() method. Perhaps you used Object type rather than Void.

Change your RegisterTask class to extend AsyncTask <Object, Void, Object>. Learn more about AsyncTask here.

Upvotes: 3

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