AutoComplete search on even one character android

Set your completionThreshold to 1.

<AutoCompleteTextView 
    android:id="@+id/your_id" 
    android:layout_width="200dp"
    android:layout_height="wrap_content"
    android:completionThreshold="1" />

Or to do it dynamically use mAutoCompleteTextView.setThreshold(1).

http://developer.android.com/reference/android/widget/AutoCompleteTextView.html

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