Is it possible to pass a String parameter to viewModel from Android xml

Question

Is it possible to pass a String parameter on a button click of XML file to the methods of the view model file as like below

 android:onClick="@{v -> viewModel.postFeedRequest(@string/show_details)}"

I tried like above i am getting binding error.

Can anyone post any example on this.

Answer 1

Try this:

 android:onClick="@{() -> viewModel.postFeedBackRequest(AppConstant.WithStringResource)}"

where AppConstant is your class and WithStringResource is your String constant with the value you want to send.

Update:

You can also directly send the string like this:

android:onClick='@{() -> viewModel.postFeedBackRequest("WithStringResource")}'

Or

 android:onClick="@{() -> viewModel.postFeedRequest(@string/show_details)}"

Answer 2

Do like this In viiew model

  fun onClickFunction(num:String) {
            edExtnNumber.set(edTextField.get()+""+num)
        }

and in xml

android:onClick="@{() -> viewModel.onClickFunction(@string/value)}">