AutoCompleteTextView force to show all items

Question

There is a moment in my app, that I need to force to show all items in the suggestion list, no matter what the user has typed. How can I do that?

I tried to do somet

Answer 1

This works for me perfectly, this is an easy way to resolve the problem:

final ArrayAdapter<String> adapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_dropdown_item_1line, usernameLists);
    etUsername.setThreshold(1);
    etUsername.setAdapter(adapter);
    etUsername.setOnTouchListener(new View.OnTouchListener() {

        @SuppressLint("ClickableViewAccessibility")
        @Override
        public boolean onTouch(View paramView, MotionEvent paramMotionEvent) {
            if (usernameLists.size() > 0) {
                // show all suggestions
                if (!etUsername.getText().toString().equals(""))
                    adapter.getFilter().filter(null);
                etUsername.showDropDown();
            }
            return false;
        }
    });

Answer 2

To stop adapter from filtering you can set high enough treshold on your textview:

autoCompleteTextView.setThreshold(100);

Hope it helps.

Answer 3

class InstantAutoComplete(context: Context?, attrs: AttributeSet?) : AutoCompleteTextView(context, attrs) {

override fun enoughToFilter(): Boolean {
    return true
}

override fun onFocusChanged(focused: Boolean, direction: Int, previouslyFocusedRect: Rect?) {
    super.onFocusChanged(focused, direction, previouslyFocusedRect)
    if (focused && filters != null) {
        performFiltering(text, 0)
    }
}

fun performFilter() {
    performFiltering(text, 0)
    showDropDown()
}

}

I need to show all data from autocompletetextview after click button dropdown(imageview). Using class extends AutoCompleteTextView and add this function, it works like magic.

Answer 4

Basically, after 5-6 hours of experimentation to understand how the damn filter works, I wrote my own adapter which does exactly what I want:

    public class burtuAdapteris extends ArrayAdapter<String> implements Filterable {

       ArrayList<String> _items = new ArrayList<String>();
       ArrayList<String> orig = new ArrayList<String>();

       public burtuAdapteris(Context context, int resource, ArrayList<String> items) {
           super(context, resource, items);    

           for (int i = 0; i < items.size(); i++) {
                orig.add(items.get(i));
            }
       }

       @Override
       public int getCount() {
           if (_items != null)
               return _items.size();
           else
               return 0;
       }

       @Override
       public String getItem(int arg0) {
           return _items.get(arg0);
       }


      @Override

      public Filter getFilter() {
          Filter filter = new Filter() {
              @Override
              protected FilterResults performFiltering(CharSequence constraint) {

                  if(constraint != null)
                      Log.d("Constraints", constraint.toString());
                  FilterResults oReturn = new FilterResults();

                /*  if (orig == null){
                    for (int i = 0; i < items.size(); i++) {
                        orig.add(items.get(i));
                    }
                  }*/
                  String temp;  
                  int counters = 0;
                  if (constraint != null){

                      _items.clear();
                      if (orig != null && orig.size() > 0) {
                          for(int i=0; i<orig.size(); i++)
                            {                           
                                temp = orig.get(i).toUpperCase();

                                if(temp.startsWith(constraint.toString().toUpperCase()))
                                {

                                     _items.add(orig.get(i));               
counters++;

                                }
                            }
                      }
                      Log.d("REsult size:" , String.valueOf(_items.size()));
                          if(!counters)
                          {
                             _items.clear();
                             _items = orig;
                          }
                      oReturn.values = _items;
                      oReturn.count = _items.size();
                  }
                  return oReturn;
              }


              @SuppressWarnings("unchecked")
              @Override
              protected void publishResults(CharSequence constraint, FilterResults results) {
                  if(results != null && results.count > 0) {
                        notifyDataSetChanged();
                        }
                        else {
                            notifyDataSetInvalidated();
                        }

              }

            };

          return filter;

      }


 }

And it's simple to use, just replace original adapter with this:

final burtuAdapteris fAdapter = new burtuAdapteris(this, android.R.layout.simple_dropdown_item_1line, liste);

In my case liste is: ArrayList<String> liste = new ArrayList<String>();

Answer 5

Simple and easy answer is:

after autoCompleteTextView.setText("") simply remove filter from adapter like this:

autoCompleteTextView.adapter.filter.filter(null)

thats it, filtering is gone and whole dropdown list is shown.

Answer 6

method forcefully show drop down list.

you need to call requestFocus(); to show keyboard otherwise keyboard does not pop up.

autocomptv.setOnTouchListener(new OnTouchListener() {

        @SuppressLint("ClickableViewAccessibility")
        @Override
        public boolean onTouch(View paramView, MotionEvent paramMotionEvent) {
            // TODO Auto-generated method stub
            autocomptv.showDropDown();
            autocomptv.requestFocus();
            return false;
        }
    });