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androidiosgesture

Which method gives the exact coordinates as those given by GestureDetector

I want to develop an App. that can detect if the user touches a specific view, so that certain action to happen. I implemented SimpleOnGestureListener to detect and listen users' touches across the screen. My problem now is, the below posted methods, give different coordinates of the same view and i do not know which one should i use to compare with the coordinates given by the SimpleOnGestureListener.

Methods that give coordinates of the views:

tv1.getLocalVisibleRect(tv1Rect);
tv1.getLocationOnScreen(tv1LocOnScreen);
tv1.setText("xCords: "+tv1.getX()+", yCords: "+tv1.getY());
Solution

  • To find out if a view contains the point touched you can use

    CGRectContainsPoint(your view frame, the CGPoint of the tap)

    You can get the CGPoint of the tap from a gesture recognizer by

    CGPoint location = [recognizer locationInView: view which the recognizer is attached to];