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git-test/src/main/java/net/micode/notes/ui/DateTimePickerDialog.java

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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import java.util.Calendar;
import net.micode.notes.R;
import net.micode.notes.ui.DateTimePicker;
import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.text.format.DateFormat;
import android.text.format.DateUtils;
/**
* 日期时间选择对话框
* <p>
* 该类是一个封装了DateTimePicker组件的对话框用于在小米便签应用中
* 提供一个完整的日期时间选择界面。用户可以通过该对话框选择日期和时间,
* 并在确认后将选择结果返回给调用者
* </p>
*/
public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
/**
* 当前选择的日期和时间
*/
private Calendar mDate = Calendar.getInstance();
/**
* 是否使用24小时制视图
*/
private boolean mIs24HourView;
/**
* 日期时间设置监听器,用于通知外部选择结果
*/
private OnDateTimeSetListener mOnDateTimeSetListener;
/**
* 日期时间选择器组件
*/
private DateTimePicker mDateTimePicker;
/**
* 日期时间设置监听器接口
* <p>
* 当用户在对话框中确认选择日期时间后,会通过此接口通知外部
* </p>
*/
public interface OnDateTimeSetListener {
/**
* 日期时间设置完成时调用的方法
* @param dialog 对话框实例
* @param date 选择的日期时间,以毫秒为单位
*/
void OnDateTimeSet(AlertDialog dialog, long date);
}
/**
* 构造函数,使用指定日期初始化日期时间选择对话框
* @param context 上下文对象
* @param date 初始日期时间,以毫秒为单位
*/
public DateTimePickerDialog(Context context, long date) {
super(context);
mDateTimePicker = new DateTimePicker(context);
setView(mDateTimePicker);
mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
public void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute) {
mDate.set(Calendar.YEAR, year);
mDate.set(Calendar.MONTH, month);
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
mDate.set(Calendar.MINUTE, minute);
updateTitle(mDate.getTimeInMillis());
}
});
mDate.setTimeInMillis(date);
mDate.set(Calendar.SECOND, 0);
mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
setButton(context.getString(R.string.datetime_dialog_ok), this);
setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
set24HourView(DateFormat.is24HourFormat(this.getContext()));
updateTitle(mDate.getTimeInMillis());
}
/**
* 设置是否使用24小时制视图
* @param is24HourView true表示使用24小时制false表示使用12小时制
*/
public void set24HourView(boolean is24HourView) {
mIs24HourView = is24HourView;
}
/**
* 设置日期时间设置监听器
* @param callBack 日期时间设置完成时的回调函数
*/
public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
mOnDateTimeSetListener = callBack;
}
/**
* 更新对话框标题
* <p>
* 该方法根据当前选择的日期时间和视图模式更新对话框标题
* </p>
* @param date 当前选择的日期时间,以毫秒为单位
*/
private void updateTitle(long date) {
int flag =
DateUtils.FORMAT_SHOW_YEAR |
DateUtils.FORMAT_SHOW_DATE |
DateUtils.FORMAT_SHOW_TIME;
flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
}
/**
* 点击对话框按钮时调用的方法
* <p>
* 当用户点击对话框的确定按钮时,会调用该方法,通知注册的监听器
* </p>
* @param arg0 对话框实例
* @param arg1 点击的按钮ID
*/
@Override
public void onClick(DialogInterface arg0, int arg1) {
if (mOnDateTimeSetListener != null) {
mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
}
}
}