AutoCompleteTextView dropdownlist invalidate through ArrayAdapter?

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I have an ArrayAdapter and ArrayList initialized earlier in program. Using AsynTask, in BackgroundTask I am adding dynamic data from webservices into ArrayList. Everything is working fine.

At first time when I enter text in AutoCompleteTextView it searches and shows dropdownlist. But when I search for another text, ArrayAdapter getCount size is 0. Below code, I am doing in postTask.. 1 - setting adapter to autocompleteTextView.

2 - setNotifyonChange to adapter. 3 - autocompletetextview invalidate. Sorry I m fresher to write on stack overflow, code wasn't getting posted so wrote like this, hope reader will understand.

I have tried notifyDataSetChanged and notifyDataSetInvalidate; nothing working. Please let me where am I going wrong. Adapter arrayadapter autocompletetextview invalidate link|improve this question asked Feb 23 at 12:09user122823811.

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