Tracing touches in SegmentedControl for BlackBerry 10

Question

I have a SegmentedControl on my Page and I want to call methods on a C++ object when the selected value has changed. Each selectable Option has its own method to call.

I need to know if the Option was set by touch or by code, because if the method execution fails, I want to set the old value by code.

Example:

1. I set Option B by touch
   1. Option B's assigned method gets called
   2. the called method succeeds
2. I set Option B by touch
   1. Option B's assigned method gets called
   2. the called method failed
   3. Option A is being set by code
   4. I don't want Option A's assigned method to get called, because the Option has been set by code

How can I detect if the Option has been set by code or by touch?

Answer 1

I don't know if you can detect by touch or code. But you can make a workaround.

property bool byTouch: true

Let's go through your example

1. I set Option B by touch
   1. Option B's assigned method gets called
   2. the called method succeeds
2. I set Option B by touch
   1. Option B's assigned method gets called
   2. the called method failed
   3. Option A is being set by code, I set byTouch to false
   4. I check if byTouch is true, and if it is, Option A's assigned method to get called

You can obviously make the same byTouch check for Option B as well.