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：

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical" >

     <DatePicker
         android:id="@+id/today"
         android:layout_width="wrap_content"
         android:layout_height="182dp" />

     <TimePicker
         android:id="@+id/now"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content" />

     <Button
         android:id="@+id/button1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="保存" />

 </LinearLayout>

然后修改MainActivity.java文件：如下

 package com.example.datetimedemo;

 import android.app.Activity;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.DatePicker;
 import android.widget.TimePicker;
 import android.widget.Toast;

 public class MainActivity extends Activity {

     private DatePicker dpToday=null;
     private TimePicker tpNow=null;
     private Button btnSave=null;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         dpToday = (DatePicker)findViewById(R.id.today);
         tpNow = (TimePicker)findViewById(R.id.now);
         btnSave = (Button)findViewById(R.id.button1);
         btnSave.setOnClickListener(new SaveClick());
     }

     public class SaveClick implements OnClickListener{

         @Override
         public void onClick(View v) {
             int iYear=0;
             int iMonth=0;
             int iDay=0;
             String sDate="";
             iYear = dpToday.getYear();
             iMonth = dpToday.getMonth() + 1;   //返回月份从0到11,故要加1
             iDay = dpToday.getDayOfMonth();

             sDate="日期: " + String.valueOf(iYear) + "年" + String.valueOf(iMonth) + "月"
                     + String.valueOf(iDay) + "日";

             int iHour=0;
             int iMin=0;
             String sTime="";
             iHour=tpNow.getCurrentHour();
             iMin=tpNow.getCurrentMinute();
             sTime="时间："+String.valueOf(iHour)+"时"+String.valueOf(iMin)+"分";  

             Toast.makeText(getApplicationContext(), sDate+sTime, Toast.LENGTH_LONG).show();

         }

     }

     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         getMenuInflater().inflate(R.menu.main, menu);
         return true;
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         // Handle action bar item clicks here. The action bar will
         // automatically handle clicks on the Home/Up button, so long
         // as you specify a parent activity in AndroidManifest.xml.
         int id = item.getItemId();
         if (id == R.id.action_settings) {
             return true;
         }
         return super.onOptionsItemSelected(item);
     }
 }

显示效果如下：