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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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public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
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private Calendar mDate = Calendar.getInstance();
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//创建一个Calendar类型的变量 mDate,方便时间的操作
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private boolean mIs24HourView;
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private OnDateTimeSetListener mOnDateTimeSetListener;
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//声明一个时间日期滚动选择控件 mOnDateTimeSetListener
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private DateTimePicker mDateTimePicker;
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//DateTimePicker控件,控件一般用于让用户可以从日期列表中选择单个值。
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//运行时,单击控件边上的下拉箭头,会显示为两个部分:一个下拉列表,一个用于选择日期的
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public interface OnDateTimeSetListener {
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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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//对该界面对话框的实例化
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super(context);
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//对数据库的操作
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mDateTimePicker = new DateTimePicker(context);
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setView(mDateTimePicker);
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//添加一个子视图
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mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
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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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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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//将视图中的各选项设置为系统当前时间
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updateTitle(mDate.getTimeInMillis());
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}
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});
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mDate.setTimeInMillis(date);
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//得到系统时间
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mDate.set(Calendar.SECOND, 0);
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//将秒数设置为0
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mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
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setButton(context.getString(R.string.datetime_dialog_ok), this);
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setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
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//设置按钮
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set24HourView(DateFormat.is24HourFormat(this.getContext()));
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//时间标准化打印
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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) {
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mOnDateTimeSetListener = callBack;
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}//将时间日期滚动选择控件实例化
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private void updateTitle(long date) {
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int flag =
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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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flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
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setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
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}//android开发中常见日期管理工具类(API)——DateUtils:按照上下午显示时间
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public void onClick(DialogInterface arg0, int arg1) {
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if (mOnDateTimeSetListener != null) {
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mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
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}
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}//第一个参数arg0是接收到点击事件的对话框
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//第二个参数arg1是该对话框上的按钮
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} |