AutoCompleteTextView doesn't show dictionary suggestions

问题

I have a custom AutoCompleteTextView where the user can enter text and whenever the user writes @ I show a dropdown with suggestions of custom usernames. Unfortunately, I also need to show the dictionary word suggestions above the keyboard and, for some reason, AutoCompleteTextView doesn't show dictionary suggestions, although it inherits from EditText where it does show.

So, does anyone know what the problem is and how to fix it? Or should I go to a different route to obtain what I want.

回答1:

I ran into the same problem. The AutoCompleteTextView constructor sets the InputType flag EditorInfo.TYPE_TEXT_FLAG_AUTO_COMPLETE. I confirmed that this flag inhibits the normal text suggestions. The code reads:

    // Always turn on the auto complete input type flag, since it
    // makes no sense to use this widget without it.
    int inputType = getInputType();
    if ((inputType&EditorInfo.TYPE_MASK_CLASS)
            == EditorInfo.TYPE_CLASS_TEXT) {
        inputType |= EditorInfo.TYPE_TEXT_FLAG_AUTO_COMPLETE;
        setRawInputType(inputType);
    }

Despite this comment, I've had preliminary success with removing the flag, as in:

AutoCompleteTextView t = (AutoCompleteTextView)v.findViewById(id);
t.setInputType( t.getInputType() & (~EditorInfo.TYPE_TEXT_FLAG_AUTO_COMPLETE) );

回答2:

I had the same issue, I recommend extend AutocompleteTextView class and add this line in each constructor:

setInputType(getInputType() & (~EditorInfo.TYPE_TEXT_FLAG_AUTO_COMPLETE));

来源：https://stackoverflow.com/questions/9466786/autocompletetextview-doesnt-show-dictionary-suggestions