AutoCompleteTextView AddTextChangedListener method in Android(Xamarin)

Question

I want to Implement AddTextChangedListener to AutoCompleteTextView using Android.Text.ITextWatcher But I can't find any way on how to implement in Xamarin.

I am using BigData so every Single Character add in AutoCompleteTextView i want to call server to check the data. So I want to add onTextChanged, beforeTextChanged and afterTextChanged for my AutoCompleteTextView.

In pure Android I am using below way

txtSearch.addTextChangedListener(new TextWatcher() {
                                @Override
                                public void beforeTextChanged(CharSequence s, int start, int count, int after) {

                                }

                                @Override
                                public void onTextChanged(CharSequence s, int start, int before, int count) {
                                    String newText = txtSearch.getText().toString();
                                    new getJsonData().execute(newText);
                                }

                                @Override
                                public void afterTextChanged(Editable s) {

                                }
                            });

Any Help be Highly Appreciated.

Update :

See the Upper ScreenShot If user write something on Medical Store AutoCompleteTextView and select the value from Suggestion which is change every time when user write single new character. Then I want to set it Address if user select some value from data.

Answer 1

I got the Solution.

In my Activity I have Extends with Android.Text.ITextWatcher and Implement Interface Method it will Create like below way

public void AfterTextChanged(IEditable s)
        {

        }

public void BeforeTextChanged(ICharSequence s, int start, int count, int after)
        {

        }

public async void OnTextChanged(ICharSequence s, int start, int before, int count)
        {
            string newText = autoCompleteTextView.Text;
            var suggestionData = await PrescriptionServices.GetFilterData(newText);

            adapter = new ArrayAdapter(this, Resource.Layout.row_org, suggestionData);
            autoCompleteTextView.Adapter = adapter;

        }