touchesEnded event in BarChartView not called

[niklas22]

Hello everyone!

I'm currently developing an iOS App which is using the Charts-framework.
I want to know when the user stops zooming or touching the chart.
But when i call the touchesBegin/Moved/Ended events, the touchesEnded event is not called.

I hope someone can help me with this issue! :-)

Kind regards

Niklas

[liuxuan30]

how do you setup your gesture and call touchesBegin/Moved/Ended events?

The library already had some gestures in BarLineChartViewBase and its handlers are like:
@objc private func pinchGestureRecognized(recognizer: UIPinchGestureRecognizer)
You can provide your own implementation, or add delegate method and call it when the gesture state is ended.

[farfromrefug]

@liuxuan30 i would like to re open that issue cause i can see this clearly happening.
When using a ChartView i can see my views touchesEnded not being called.
I can see touchesBegan but no touchesEnded.
I soon as touch another view it works.

It feels like you are canceling/preventing the touch from being propragated

[liuxuan30]

Have you checked the origin implementation? Are you providing yours or using the library's?

[farfromrefug]

what do you mean by origin implementation?
I do set breakpoint in touchesBegan from Charts and i do break there.
Now that i think about it i think i know what's going on. You must have a longpress gesture that cancels touch end events.
I think about this because i do get the touch end events when i long press on the Charts view. Will run some tests

[liuxuan30]

What I mean is gesture handlers are private funcs, so if you use yours, it should be calling yours only.. If you change the library's implementation, then I am not aware of.
The library seems not having a long press gesture. You can take a look at BarLineChartViewBase, it holds all the gesture handlers.

[dtroupe18]

For anyone stumbling along this issue take at look at this StackOverflow Question.

[farfromrefug]

@dtroupe18 can you make a PR?

[dtroupe18]

@farfromrefug I did. #3599 There is also this PR #3612