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93 lines
4.2 KiB
93 lines
4.2 KiB
/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.ui;
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import java.util.Calendar;
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import net.micode.notes.R;
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import net.micode.notes.ui.DateTimePicker;
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import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
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import android.app.AlertDialog;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.DialogInterface.OnClickListener;
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import android.text.format.DateFormat;
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import android.text.format.DateUtils;
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//对话框弹出
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public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
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private Calendar mDate = Calendar.getInstance();
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private boolean mIs24HourView;
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private OnDateTimeSetListener mOnDateTimeSetListener; //设置时间的接口
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private DateTimePicker mDateTimePicker;
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public interface OnDateTimeSetListener {//实现接口的函数调用
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void OnDateTimeSet(AlertDialog dialog, long date);
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}
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public DateTimePickerDialog(Context context, long date) {
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super(context);//访问AlertDialog的context
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mDateTimePicker = new DateTimePicker(context);
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setView(mDateTimePicker);//自定义对话框
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mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() { //注册监听器，用户操作日期时间选择器时，这个监听器会被自动触发
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public void onDateTimeChanged(DateTimePicker view, int year, int month,
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int dayOfMonth, int hourOfDay, int minute) {
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//用户修改时，实时更新时间
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mDate.set(Calendar.YEAR, year);
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mDate.set(Calendar.MONTH, month);
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mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
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mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
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mDate.set(Calendar.MINUTE, minute);
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updateTitle(mDate.getTimeInMillis());//根据新的日期时间更新对话框标题
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}
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});
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//下面三行是日期时间选择器初始化的核心逻辑
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mDate.setTimeInMillis(date); //导入calendar时间
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mDate.set(Calendar.SECOND, 0);//秒数设为0
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mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());//设置为当前时间
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setButton(context.getString(R.string.datetime_dialog_ok), this);//设置了确认和取消按钮
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setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
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set24HourView(DateFormat.is24HourFormat(this.getContext()));
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updateTitle(mDate.getTimeInMillis());
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}
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public void set24HourView(boolean is24HourView) {
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mIs24HourView = is24HourView;
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}
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public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) { //设置时间的接口
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mOnDateTimeSetListener = callBack;
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}
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private void updateTitle(long date) {
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int flag = //亮点，位掩码设计 返回了结果是一个包含所有标志位的整数作为时间显示格式
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DateUtils.FORMAT_SHOW_YEAR |
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DateUtils.FORMAT_SHOW_DATE |
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DateUtils.FORMAT_SHOW_TIME;
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//再并上24小时格式或12小时格式
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flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_12HOUR; //错误应为12HOUR
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setTitle(DateUtils.formatDateTime(this.getContext(), date, flag)); //设置对话框标题
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} //日期时间的本地化格式化
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public void onClick(DialogInterface arg0, int arg1) {//点击确认按钮时调用
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if (mOnDateTimeSetListener != null) {
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mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
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}
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}
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} |