How to pick a second using TimePicker, android

Question

I have used TimePicker to make the user to choose time see here and here also. But I didnot find a way to make the user to select second also. Now user can select Hour and Minut

Answer 1

I wrote a Kotlin extension function to do this. It's messy but it gets the job done:

/**
 * Adds seconds number picker into the [TimePicker] format programmatically.
 * */
fun TimePicker.addSeconds() {
    val system = Resources.getSystem()
    val idHour = system.getIdentifier("hour", "id", "android")
    val idMinute = system.getIdentifier("minute", "id", "android")
    val idAmPm = system.getIdentifier("amPm", "id", "android")
    val idLayout = system.getIdentifier("timePickerLayout", "id", "android")
    val spinnerHour = findViewById(idHour) as NumberPicker
    val spinnerMinute = findViewById(idMinute) as NumberPicker
    val spinnerAmPm = findViewById(idAmPm) as NumberPicker
    val outerLayout = findViewById(idLayout) as LinearLayout
    val layout = outerLayout.getChildAt(0) as LinearLayout
    layout.removeAllViews()
    (spinnerAmPm.parent as ViewGroup).removeView(spinnerAmPm)

    layout.addView(spinnerHour)
    setImeOptions(spinnerHour, 0)
    layout.addView(spinnerMinute)
    setImeOptions(spinnerMinute, 1)

    val spinnerSecond = createSecondPicker(spinnerHour.context)
    layout.addView(spinnerSecond)
    setImeOptions(spinnerAmPm, 2)
    val params = spinnerHour.layoutParams
    spinnerSecond.layoutParams = params

    layout.addView(spinnerAmPm)
    setImeOptions(spinnerAmPm, 3)
}

private fun createSecondPicker(context: Context): NumberPicker {
    val spinnerSecond = NumberPicker(context)
    spinnerSecond.id = R.id.second
    spinnerSecond.setFormatter { i -> String.format("%02d", i) }
    spinnerSecond.minValue = 0
    spinnerSecond.maxValue = 59
    return spinnerSecond
}

You'll also need to add this id to res/values/ids.xml so that you can reference the seconds field programmatically using R.id.second

Shoutout to this post for the idea: https://stackoverflow.com/a/60601077/1709354