Ok. Even with an Action="None", it could be that Android is reacting to whatever action you have assigned via Form Logic. For example, if you have Form Logic configured to set focus to a certain field or place data in a field, this may cause Android to react with the keyboard if it is a text box type control. An option to disable this is to set the "Hide Keyboard" option as appropriate on the affected Text box control. The "Hide Keyboard" property is available when selecting a Text Box Control from within the Form Designer in TP Desktop. Please note that this option will only be available if your Project-->Project Settings-->OS Platform is set to "Android".
Let me know if that helps at all.