8.Android之日期DatePicker和时间TimeTicker控件学习

手机设置时间日期很普遍，今天就梳理下。

首先在拖入一个按钮，日期和时间控件到工程里，如图：

代码如下：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical" >
 6 
 7     <DatePicker
 8         android:id="@+id/today"
 9         android:layout_width="wrap_content"
10         android:layout_height="182dp" />
11 
12     <TimePicker
13         android:id="@+id/now"
14         android:layout_width="wrap_content"
15         android:layout_height="wrap_content" />
16 
17     <Button
18         android:id="@+id/button1"
19         android:layout_width="wrap_content"
20         android:layout_height="wrap_content"
21         android:text="保存" />
22 
23 </LinearLayout>

然后修改MainActivity.java文件：如下

 1 package com.example.datetimedemo;
 2 
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.view.Menu;
 6 import android.view.MenuItem;
 7 import android.view.View;
 8 import android.view.View.OnClickListener;
 9 import android.widget.Button;
10 import android.widget.DatePicker;
11 import android.widget.TimePicker;
12 import android.widget.Toast;
13 
14 public class MainActivity extends Activity {
15 
16     private DatePicker dpToday=null;  
17     private TimePicker tpNow=null;  
18     private Button btnSave=null;  
19     @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         super.onCreate(savedInstanceState);
22         setContentView(R.layout.activity_main);
23         
24         dpToday = (DatePicker)findViewById(R.id.today);
25         tpNow = (TimePicker)findViewById(R.id.now);
26         btnSave = (Button)findViewById(R.id.button1);
27         btnSave.setOnClickListener(new SaveClick());
28     }
29     
30     public class SaveClick implements OnClickListener{
31 
32         @Override
33         public void onClick(View v) {
34             int iYear=0;
35             int iMonth=0;
36             int iDay=0;
37             String sDate="";
38             iYear = dpToday.getYear();
39             iMonth = dpToday.getMonth() + 1;   //返回月份从0到11,故要加1
40             iDay = dpToday.getDayOfMonth();
41             
42             
43             sDate="日期: " + String.valueOf(iYear) + "年" + String.valueOf(iMonth) + "月" 
44                     + String.valueOf(iDay) + "日";
45             
46             int iHour=0;  
47             int iMin=0;  
48             String sTime="";  
49             iHour=tpNow.getCurrentHour();  
50             iMin=tpNow.getCurrentMinute();  
51             sTime="时间："+String.valueOf(iHour)+"时"+String.valueOf(iMin)+"分";  
52             
53             Toast.makeText(getApplicationContext(), sDate+sTime, Toast.LENGTH_LONG).show();
54             
55         }
56         
57     }
58 
59     @Override
60     public boolean onCreateOptionsMenu(Menu menu) {
61         // Inflate the menu; this adds items to the action bar if it is present.
62         getMenuInflater().inflate(R.menu.main, menu);
63         return true;
64     }
65 
66     @Override
67     public boolean onOptionsItemSelected(MenuItem item) {
68         // Handle action bar item clicks here. The action bar will
69         // automatically handle clicks on the Home/Up button, so long
70         // as you specify a parent activity in AndroidManifest.xml.
71         int id = item.getItemId();
72         if (id == R.id.action_settings) {
73             return true;
74         }
75         return super.onOptionsItemSelected(item);
76     }
77 }

显示效果如下：