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：