Android develops a way to add a click event to a carousel picture _java

This is the code I added inside, use switch (position) to get the current picture, add the click event to the corresponding picture,

Case 0:,

Case 1:

Time code as follows, when clicked on the first picture, want to implement case 0 inside the code, but directly to the error, exit, when clicked on the second implementation of Case 1 code is no problem, I want to know what is wrong ah.

Yes, the code is written in Fragemnt, click on the picture is to move from a fragment to an activity, ask the great God advice