mEditSpinner = (EditSpinner) findViewById(R.id.edit_spinner);
        ListAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item,
        getResources().getStringArray(R.array.your_string_array));
        mEditSpinner.setAdapter(adapter);

mEditSpinner.setEditable(false);

        // set the dropdown drawable on the right of EditText and its size
        mEditSpinner.setDropDownDrawable(getResources().getDrawable(R.drawable.picker), 60, 60);

        // set the spacing bewteen Edited area and DropDown click area
        mEditSpinner.setDropDownDrawableSpacing(50);

        // set DropDown popup window background
        mEditSpinner.setDropDownBackgroundResource(R.drawable.your_custom_dropdown_bkg);

        // set DropDown animation of the popup window
        mEditSpinner.setDropDownAnimationStyle(R.style.CustomPopupAnimation);

        // triggered when dropdown popup window dismissed
        mEditSpinner.setOnDismissListener(new PopupWindow.OnDismissListener() {
            @Override
            public void onDismiss() {
            }
        });

        // triggered when dropdown popup window shown
        mEditSpinner.setOnShowListener(new EditSpinner.OnShowListener() {
            @Override
            public void onShow() {
            }
        });

        // it converts the item in the list to a string shown in EditText.
        mEditSpinner.setItemConverter(new EditSpinner.ItemConverter() {
            @Override
            public String convertItemToString(Object selectedItem) {
            }
        });

        // triggered when one item in the list is clicked
        mEditSpinner.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            }
        });