Cakephp display select options as checkboxes but accept just a single choice

I know checkboxes should be boolean, but I'm trying to get this working in an Android Webview for a closed system which uses Android 4.4 (I can't change this version, nor can it be upgraded). Android 4.4 crashes if you present a drop down select box in a webview.

I know I can do this to present a "multiple choice checkbox" solution, but this allows multiple checkboxes to be selected ..

$this->Form->input('field_id', ['type' => 'select', 'multiple' => 'checkbox']

Does anyone have any ideas? Or perhaps can suggest an alternative way of allowing a user to select from multiple options without using a Select box.

Cheers.