RGB в Hex и Hex в RGB

Я принял решение @ Zarooka в качестве отправной точки. Я думаю, что нашел ошибку. Если у вас было начальное время, которое уже было вне диапазона, то вы больше не могли его перемещать, потому что любой «onChanged» отклонялся. Вот почему я расширил setMax и setMin, чтобы перейти в допустимый диапазон при настройке mins / maxs.

package de.appdream.garooda.view;

import java.util.Calendar;
import java.util.Date;

import android.app.TimePickerDialog;
import android.content.Context;
import android.text.format.DateFormat;
import android.widget.TimePicker;

import java.lang.reflect.Field; 


public class GaroodaTimePickerDialog extends TimePickerDialog {

private int minHour = -1;
private int minMinute = -1;

private int maxHour = 25;
private int maxMinute = 61;

private int currentHour = 0;
private int currentMinute = 0;

    private Calendar calendar = Calendar.getInstance();
    //private DateFormat dateFormat;

public GaroodaTimePickerDialog(Context context, OnTimeSetListener callBack, int hour, int minute,
        boolean is24HourView) {
    super(context, callBack, hour, minute, is24HourView);

    currentHour = hour;
    currentMinute = minute;
    //dateFormat = DateFormat.getTimeInstance(DateFormat.SHORT);

    try {
        Class<?> superclass = getClass().getSuperclass();
        Field mTimePickerField = superclass.getDeclaredField("mTimePicker");
        mTimePickerField.setAccessible(true);
        TimePicker mTimePicker = (TimePicker) mTimePickerField.get(this);
        mTimePicker.setOnTimeChangedListener(this);
    } catch (NoSuchFieldException e) {
    } catch (IllegalArgumentException e) {
    } catch (IllegalAccessException e) {
    }
}







public void setMin(int hour, int minute) {
    minHour = hour;
    minMinute = minute;

    Calendar min = Calendar.getInstance();
    Calendar existing = Calendar.getInstance();

    min.set(Calendar.HOUR_OF_DAY, minHour);
    min.set(Calendar.MINUTE, minMinute);

    existing.set(Calendar.HOUR_OF_DAY, currentHour);
    existing.set(Calendar.MINUTE, currentMinute);

    if (existing.before(min)) {
        currentHour = minHour;
        currentMinute = minMinute;
        updateTime(currentHour, currentMinute);
    }
}

public void setMax(int hour, int minute) {
    maxHour = hour;
    maxMinute = minute;

    Calendar max = Calendar.getInstance();
    Calendar existing = Calendar.getInstance();

    max.set(Calendar.HOUR_OF_DAY, maxHour);
    max.set(Calendar.MINUTE, maxMinute);

    existing.set(Calendar.HOUR_OF_DAY, currentHour);
    existing.set(Calendar.MINUTE, currentMinute);

    if (existing.after(max)) {
        currentHour = maxHour;
        currentMinute = maxMinute;
        updateTime(currentHour, currentMinute);
    }

}

@Override
public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {

    boolean validTime = true;
    if (hourOfDay < minHour || (hourOfDay == minHour && minute < minMinute)){
        validTime = false;
    }

    if (hourOfDay  > maxHour || (hourOfDay == maxHour && minute > maxMinute)){
        validTime = false;
    }

    if (validTime) {
        currentHour = hourOfDay;
        currentMinute = minute;
    }

    updateTime(currentHour, currentMinute);
    updateDialogTitle(view, currentHour, currentMinute);
}

private void updateDialogTitle(TimePicker timePicker, int hourOfDay, int minute) {
    calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
    calendar.set(Calendar.MINUTE, minute);
    //String title = dateFormat.format(calendar.getTime());
    //setTitle(title);
}
}