android - View Model observe not supported after update gradle

Question

My code was successfully done, but after update the gradle version, every "observing" code became error

Why is gradle making update which is not support to old code? And what should i do to fix this? should i change all of them one by one?

question from:https://stackoverflow.com/questions/65892344/view-model-observe-not-supported-after-update-gradle

Answer 1

It becomes like this:

viewModel.xxx.observe(viewLifecycleOwner) {        //prompted if use "this"
    //xxx
}

or

viewModel.xxxs.observe(viewLifecycleOwner, Observer<List<Video>> {
    //xxx
})