CODEWITHSUNDEEP
androidandroid-asynctask
Ahmed Esameddeen
Ahmed Esameddeen

Reputation: 89

how to perform search service using async task on changing text input

I am trying to perform search service using Async task on changing text input in edit text as following:

et_search.addTextChangedListener(new TextWatcher() {

            public void afterTextChanged(Editable s) {

               //my asyncTask

                }
            }

            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }

            public void onTextChanged(CharSequence s, int start, int before, int count) {
            }
        });

but I want to stop the current running async to perform new one on changing text

Upvotes: 3

Views: 654

Answers (1)

Mohit Suthar
Mohit Suthar

Reputation: 9375

You can cancel running aynctask where you want first initialize your aynctask class to globally

private YourAsyncTask mTask;

and in your editetxt first check if your async class is not null than cancel previously class and execute again

et_search.addTextChangedListener(new TextWatcher() {

        public void afterTextChanged(Editable s) {

           //my asyncTask
             if(mtask != null){
                 mTask.cancel(true);
              }
             mTask = new YourAsyncTask().execute(et_search.getText().toString());
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void onTextChanged(CharSequence s, int start, int before, int count) {
        }
    });

You can call async class in onTextChanged() method

Upvotes: 2

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