android.text.format.Time#before ( )源码实例Demo

@Override
public Time getCustomDefault(ContentSet currentValues, Time genericDefault)
{
    Time reference = mReferenceAdapter != null ? mReferenceAdapter.get(currentValues) : null;
    boolean useReference = reference != null && !genericDefault.before(reference);
    Time value = new Time(useReference ? reference : genericDefault);
    if (value.allDay)
    {
        value.set(value.monthDay - (useReference ? 1 : 0), value.month, value.year);
    }
    else
    {
        value.minute--;
        value.normalize(false);
        value.second = 0;
        value.minute = 0;
    }
    return value;
}
 

public static boolean isInOneMonth(long when) {
    Time time = new Time();
    time.set(when + DAY_30);
    Time now = new Time();
    now.setToNow();
    if (time.before(now)) {
        return false;
    }
    return true;
}
 

@Override
public Time apply(ContentSet currentValues, Time oldValue, Time newValue)
{
    Time reference = mReferenceAdapter.get(currentValues);
    if (reference != null && newValue != null)
    {
        if (oldValue != null && !newValue.before(reference))
        {
            // try to shift the reference value
            long diff = newValue.toMillis(false) - oldValue.toMillis(false);
            if (diff > 0)
            {
                boolean isAllDay = reference.allDay;
                reference.set(reference.toMillis(false) + diff);

                // ensure the event is still allday if is was allday before.
                if (isAllDay)
                {
                    reference.set(reference.monthDay, reference.month, reference.year);
                }
                mReferenceAdapter.set(currentValues, reference);
            }
        }
        if (!newValue.before(reference))
        {
            // constraint is still violated, so set reference to its default value
            reference.set(mDefault.getCustomDefault(currentValues, newValue));
            mReferenceAdapter.set(currentValues, reference);
        }
    }
    return newValue;
}
 

@Override
public Time apply(ContentSet currentValues, Time oldValue, Time newValue)
{
    Time notBeforeThisTime = mTimeAdapter.get(currentValues);
    if (notBeforeThisTime != null && newValue != null)
    {
        if (newValue.before(notBeforeThisTime))
        {
            newValue.set(notBeforeThisTime);
        }
    }
    return newValue;
}
 

protected void setDueDate(TextView view, ImageView dueIcon, Time dueDate, boolean isClosed)
{
    if (view != null && dueDate != null)
    {
        Time now = mNow;
        if (now == null)
        {
            now = mNow = new Time();
        }
        if (!now.timezone.equals(TimeZone.getDefault().getID()))
        {
            now.clear(TimeZone.getDefault().getID());
        }

        if (Math.abs(now.toMillis(false) - System.currentTimeMillis()) > 5000)
        {
            now.setToNow();
            now.normalize(true);
        }

        dueDate.normalize(true);

        view.setText(new DateFormatter(view.getContext()).format(dueDate, now, DateFormatContext.LIST_VIEW));
        if (dueIcon != null)
        {
            dueIcon.setVisibility(View.VISIBLE);
        }

        // highlight overdue dates & times, handle allDay tasks separately
        if ((!dueDate.allDay && dueDate.before(now) || dueDate.allDay
                && (dueDate.year < now.year || dueDate.yearDay <= now.yearDay && dueDate.year == now.year))
                && !isClosed)
        {
            view.setTextAppearance(view.getContext(), R.style.task_list_overdue_text);
        }
        else
        {
            view.setTextAppearance(view.getContext(), R.style.task_list_due_text);
        }
    }
    else if (view != null)
    {
        view.setText("");
        if (dueIcon != null)
        {
            dueIcon.setVisibility(View.GONE);
        }
    }
}