Android的TimePickerDialog设置最大时间 [英] Android TimePickerDialog set max time

问题描述

我正在寻找一种方法来设置最高可以最低的时间可拾取在Android TimePickerDialog ，并从1分钟更改默认分钟间隔为5分钟，

I'm looking for a way to set the maximun and minimun time pickable on an Android TimePickerDialog, and to change the default minute interval from 1 min to 5 min,

我认为这是容易的，但我不能找到一种方法！

I thought that was an easy one, but I can't find a way !

推荐答案

这是一个扩展小提琴手回答。 不知怎的，onTimeChangedListener由TimePickerDialog在一些Android的版本不设置：

This is an extension to fiddlers answer. Somehow the onTimeChangedListener is not set by TimePickerDialog in some Android Versions:

恩。 <一href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.2.1_r1.2/android/app/TimePickerDialog.java">http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.2.1_r1.2/android/app/TimePickerDialog.java

在onTimeChanged梅索德为此不会被调用！ 对于这个问题目前最好的解决办法，就是propably至codeA定制TimePickerDialog与小提琴手的最小/最大逻辑。

The onTimeChanged methode therefor is never called! Best solution for this issue currently, is propably to code a custom TimePickerDialog with the min/max logic from fiddler.

越难看的解决办法是这样。 （添加使用反射听众） 我也更新了标题，以显示当前选择的时间。

The more ugly work around is this. (Adding the listener using reflections) I also update the title to show the currently selected time.

package com.mysuger.android.dialogs;

import java.lang.reflect.Field;
import java.text.DateFormat;
import java.util.Calendar;

import android.app.TimePickerDialog;
import android.content.Context;
import android.widget.TimePicker;

/**
 * A time dialog that allows setting a min and max time.
 * 
 */
public class RangeTimePickerDialog extends TimePickerDialog {

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

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

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

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


public RangeTimePickerDialog(Context context, OnTimeSetListener callBack, int hourOfDay, int minute, boolean is24HourView) {
    super(context, callBack, hourOfDay, minute, is24HourView);
    currentHour = hourOfDay;
    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;
}

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

@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);
}
 }

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