skip delay in kotlin coroutines

Question

Is there any way to skip a delay in kotlin coroutines.

setOnQueryTextListener(object : SearchView.OnQueryTextListener {
    override fun onQueryTextSubmit(query: String): Boolean {

        // todo: skip the delay

        return true
    }

    private var textChangeCountDown: Job? = null
    override fun onQueryTextChange(text: String): Boolean {
        textChangeCountDown?.cancel()
        textChangeCountDown = lifecycleScope.launch {

            // here is the dalay that need to be skipped when query text submit
            delay(800)

            // text changed to $text

        }
        return true
    }
})

When the user click submit, I want to skip the delay, just something like like:

val mDelay = delay(800)
// mDelay.continue()
// mDelay.cancel()

Is there some function like these?

score 1 · Accepted Answer · answered Apr 01 '21 at 03:21

1

Try using debounce https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.flow/debounce.html

Returns a flow that mirrors the original flow, but filters out values that are followed by the newer values within the given timeout. The latest value is always emitted.

answered Apr 01 '21 at 03:21

Petrus Nguyễn Thái Học

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1

I don't see how I can use `debounce` in my code – Bouh Apr 01 '21 at 11:42
1

Create a Flow of `queryTextChanged` events and debounce it. Your current code basically does that but with more manual work. Execute the query from `queryTextSubmit`, and while collecting the flow of `queryTextChanged` check that the query you are about to make is not the same as the last one already issued. – Marko Topolnik Apr 01 '21 at 13:15
1

@Bouh Try this one https://stackoverflow.com/a/63482127/11191424 – Petrus Nguyễn Thái Học Apr 02 '21 at 02:48

skip delay in kotlin coroutines

1 Answers1