Expand/open a spinner on click of another item/widget?

Question

I am trying to expand a Spinner when user click on another Button. as example : I have a Spinner with values and a \'OK\' button when user click on \'ok\' buttton without select

Answer 1

Just call Spinner.performClick() to expand Spinner without user interaction...

    final Spinner spinner = (Spinner) findViewById(R.id.spinner);
    Button okButton = (Button) findViewById(R.id.yesButton);
    okButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            if(spinner.getSelectedItem() == null) { // user selected nothing...
                spinner.performClick();
            }
        }
    });