crash when delete a file

[liqiwei1992]

when I delete a file, I can click the option menu twice at top right corner and there will be two menu, which are both show "view" and "delete", if I finish it quickly enough (double hit). Therefore, if I click "delete" and then click "view", GigaGet will crash.

[PeterCxy]

Confirmed on some phones. I will investigate later (much much later because I am preparing for a big exam now)