android中DatePicker&TimePicker的应用

 1 <?xml version=”1.0” encoding=”utf-8”?>
 2 <LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android“
 3     android:layout_width=”fill_parent”
 4     android:layout_height=”fill_parent”
 5     android:orientation=”vertical” >
 6
 7     <TextView
 8         android:id=”@+id/dateText”
 9         android:layout_width=”wrap_content”
10         android:layout_height=”wrap_content”
11         />
12     <Button
13         android:id=”@+id/dateButton”
14         android:layout_width=”fill_parent”
15         android:layout_height=”wrap_content”
16         android:text=”设置日期”
17         />
18     <TextView
19         android:id=”@+id/timeText”
20         android:layout_width=”wrap_content”
21         android:layout_height=”wrap_content”
22         />
23     <Button
24         android:id=”@+id/timeButton”
25         android:layout_width=”fill_parent”
26         android:layout_height=”wrap_content”
27         android:text=”设置时间”
28         />
29
30 </LinearLayout>

  1 package com.tiantian.test;
  2
  3 import java.util.Calendar;
  4
  5 import android.app.Activity;
  6 import android.app.DatePickerDialog;
  7 import android.app.DatePickerDialog.OnDateSetListener;
  8 import android.app.Dialog;
  9 import android.app.TimePickerDialog;
 10 import android.app.TimePickerDialog.OnTimeSetListener;
 11 import android.content.Intent;
 12 import android.graphics.Bitmap;
 13 import android.graphics.BitmapFactory;
 14 import android.graphics.Matrix;
 15 import android.net.Uri;
 16 import android.os.Bundle;
 17 import android.os.SystemClock;
 18 import android.util.DisplayMetrics;
 19 import android.view.View;
 20 import android.view.View.OnClickListener;
 21 import android.widget.Button;
 22 import android.widget.Chronometer;
 23 import android.widget.DatePicker;
 24 import android.widget.DatePicker.OnDateChangedListener;
 25 import android.widget.ImageView;
 26 import android.widget.TextView;
 27 import android.widget.TimePicker;
 28 import android.widget.TimePicker.OnTimeChangedListener;
 29 import android.widget.ZoomControls;
 30
 31 public class TextAndridActivity extends Activity {
 32     /* Called when the activity is first created. /
 33     private TextView dateText;
 34     private TextView timeText;
 35     private Button dateButton;
 36     private Button timeButton;
 37
 38     private int year;
 39     private int monthOfYear;
 40     private int dayOfMonth;
 41     private int hour;
 42     private int minute;
 43     //声明一个独一无二的标识，来作为要显示DatePicker的Dialog的ID
 44     final static int DATE_DIALOG_ID = 1;
 45     //声明一个独一无二的标识，来作为要显示TimePicker的Dialog的ID
 46     final static int TIME_DIALOG_ID = 2;
 47     @Override
 48     public void onCreate(Bundle savedInstanceState) {
 49         super.onCreate(savedInstanceState);
 50         setContentView(R.layout.main);
 51
 52         dateText = (TextView) findViewById(R.id.dateText);
 53         timeText = (TextView) findViewById(R.id.timeText);
 54         dateButton = (Button) findViewById(R.id.dateButton);
 55         dateButton.setOnClickListener(new OnClickListener() {
 56
 57             @Override
 58             public void onClick(View v) {
 59                 //调用Activity类的方法来显示Dialog:调用这个方法会允许Activity管理该Dialog的生命周期，
 60 //并会调用 onCreateDialog(int)回调函数来请求一个Dialog
 61                 showDialog(DATE_DIALOG_ID);
 62             }
 63         });
 64         timeButton = (Button) findViewById(R.id.timeButton);
 65         timeButton.setOnClickListener(new OnClickListener() {
 66
 67             @Override
 68             public void onClick(View v) {
 69                 //调用Activity类的方法来显示Dialog:调用这个方法会允许Activity管理该Dialog的生命周期，
 70 //并会调用 onCreateDialog(int)回调函数来请求一个Dialog
 71                 showDialog(TIME_DIALOG_ID);
 72             }
 73         });
 74         //得到当前日期和时间(作为初始值)
 75         Calendar calendar = Calendar.getInstance();
 76         year = calendar.get(Calendar.YEAR);
 77         monthOfYear = calendar.get(Calendar.MONTH);
 78         dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
 79         hour = calendar.get(Calendar.HOUR_OF_DAY);
 80         minute = calendar.get(Calendar.MINUTE);
 81
 82     }
 83
 84     //当Activity调用showDialog函数时会触发该函数的调用：
 85     @Override
 86     protected Dialog onCreateDialog(int id) {
 87         // TODO Auto-generated method stub
 88         switch(id){
 89         case DATE_DIALOG_ID:
 90             return new DatePickerDialog(this, new OnDateSetListener() {
 91
 92                 @Override
 93                 public void onDateSet(DatePicker view, int year, int monthOfYear,
 94                         int dayOfMonth) {
 95                     // TODO Auto-generated method stub
 96                     dateText.setText(year + “年” + (monthOfYear + 1) + “月” + dayOfMonth + “日”);
 97                 }
 98             }, year, monthOfYear, dayOfMonth);
 99         case TIME_DIALOG_ID:
100             return new TimePickerDialog(this, new OnTimeSetListener() {
101
102                 @Override
103                 public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
104                     // TODO Auto-generated method stub
105                     timeText.setText(hourOfDay + “时” + minute + “分”);
106                 }
107             }, hour, minute, true);
108         }
109         return null;
110     }
111
112
113
114 }