如何在Kotlin的android中设置时间选择器对话框的范围？

Question

我具有如下的时间选择器对话框功能：

private fun showStartingTimeDialog() {
    val hr = 9
    val mn = 0

    val startingTimeListener = TimePickerDialog.OnTimeSetListener { _, _, _ -> /* no time setting */ }
    TimePickerDialog(this, startingTimeListener, hr, mn, false).show()
}

我想在8am到10am之间限制选择，这意味着用户只能在此范围之间滑动时钟，怎么做？

Answer 1

perdónno hablo ingles，peroaquítengo unasoluciónpara tu solicitud：

美洲驼绒球，夫人的礼物：

fun showDialogTimePicker() {
    var rangeTimePickerDialog = RangeTimePickerDialog(
        this,
        TimePickerDialog.OnTimeSetListener { timePicker, i, i2 -> }, true
    )
    rangeTimePickerDialog.setMax(12, 1)
    rangeTimePickerDialog.setMin(8, 50)
    rangeTimePickerDialog.show()
}

Esta es Clase RangeTimePickerDialog.kt
class RangeTimePickerDialog :
TimePickerDialog {
var calendar = Calendar.getInstance()
var mCurrentHour = calendar.get(Calendar.HOUR)
var mCurrentMinute = calendar.get(Calendar.MINUTE)

constructor(context: Context, callBack: OnTimeSetListener, is24HourView: Boolean) : super(
    context, callBack, Calendar.getInstance().get(Calendar.HOUR),
    Calendar.getInstance().get(Calendar.MINUTE), is24HourView
)

private var mMinHour = -1
private var mMinMinute = -1
private var mMaxHour = 100
private var mMaxMinute = 100

init {
    try {
        val superclass = javaClass.superclass
        val mTimePickerField = superclass!!.getDeclaredField("mTimePicker")
        mTimePickerField.isAccessible = true
        val mTimePicker = mTimePickerField.get(this) as TimePicker
        mTimePicker.setOnTimeChangedListener(this)


    } catch (e: NoSuchFieldException) {
    } catch (e: IllegalArgumentException) {
    } catch (e: IllegalAccessException) {
    }

}

fun setMin(hour: Int, minute: Int) {
    mMinHour = hour
    mMinMinute = minute
}

fun setMax(hour: Int, minute: Int) {
    mMaxHour = hour
    mMaxMinute = minute
}


override fun onTimeChanged(view: TimePicker, hourSelected: Int, minuteSelected: Int) {
    super.onTimeChanged(view, hourSelected, minuteSelected)

    if (hourSelected > mMaxHour) {
        mCurrentHour = mMaxHour
        mCurrentMinute = mMaxMinute
    } else if (hourSelected < mMinHour) {
        mCurrentHour = mMinHour
        mCurrentMinute = mMinMinute

    } else if (hourSelected == mMaxHour) {
        if (minuteSelected >= mMaxMinute) {
            mCurrentHour = hourSelected
            mCurrentMinute = mMaxMinute
        } else {
            mCurrentHour = hourSelected
            mCurrentMinute = minuteSelected
        }

    } else if (hourSelected == mMinHour) {
        if (minuteSelected <= mMinMinute) {
            mCurrentHour = hourSelected
            mCurrentMinute = mMinMinute
        } else {
            mCurrentHour = hourSelected
            mCurrentMinute = minuteSelected
        }
    } else {
        mCurrentHour = hourSelected
        mCurrentMinute = minuteSelected
    }

    updateTime(mCurrentHour, mCurrentMinute)
}

override fun onClick(dialog: DialogInterface?, which: Int) {
    if (which == DialogInterface.BUTTON_POSITIVE) {
        Log.e("rTimeP","$mCurrentHour:$mCurrentMinute")
    }
    if (which == DialogInterface.BUTTON_NEGATIVE) {
        Log.e("rTimeP", "not")
    }
}
}

Loglog猫咪之家]
2019-11-06 23:56:29.295 2472-2472/com.xxx.sagx E/rTimeP: 11:25
imagen donde se muestra el funcionamiento ademas de una validación de la hora seleccionada en un rango
Espero te Sirva，saludos