Android中实现日期时间选择器(DatePicker和TimePicker)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:padding="10dip" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:singleLine="true"
        android:text="请选择日期"
        android:textColor="#FFFFFF"
        android:textSize="16sp" />

    <DatePicker
        android:id="@+id/date_picker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dip" />

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dip"
        android:singleLine="true"
        android:text="请选择时间"
        android:textColor="#FFFFFF"
        android:textSize="16sp" />

    <TimePicker
        android:id="@+id/time_picker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dip" />

</LinearLayout>

package com.easipass.test;

import java.util.Calendar;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.text.InputType;
import android.view.MotionEvent;
import android.view.View;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;

/**
 * 功能描述：实现日期时间选择器
 * 
 * @author android_ls
 */
public class DateTimeActivity extends Activity implements View.OnTouchListener {
   
    private EditText etStartTime;

    private EditText etEndTime;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        etStartTime = (EditText) this.findViewById(R.id.et_start_time);
        etEndTime = (EditText) this.findViewById(R.id.et_end_time);
        
        etStartTime.setOnTouchListener(this);
        etEndTime.setOnTouchListener(this);
        
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {

            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            View view = View.inflate(this, R.layout.date_time_dialog, null);
            final DatePicker datePicker = (DatePicker) view.findViewById(R.id.date_picker);
            final TimePicker timePicker = (android.widget.TimePicker) view.findViewById(R.id.time_picker);
            builder.setView(view);

            Calendar cal = Calendar.getInstance();
            cal.setTimeInMillis(System.currentTimeMillis());
            datePicker.init(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), null);

            timePicker.setIs24HourView(true);
            timePicker.setCurrentHour(cal.get(Calendar.HOUR_OF_DAY));
            timePicker.setCurrentMinute(Calendar.MINUTE);

            if (v.getId() == R.id.et_start_time) {
                final int inType = etStartTime.getInputType();
                etStartTime.setInputType(InputType.TYPE_NULL);
                etStartTime.onTouchEvent(event);
                etStartTime.setInputType(inType);
                etStartTime.setSelection(etStartTime.getText().length());
                
                builder.setTitle("选取起始时间");
                builder.setPositiveButton("确  定", new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        StringBuffer sb = new StringBuffer();
                        sb.append(String.format("%d-%02d-%02d", 
                                datePicker.getYear(), 
                                datePicker.getMonth() + 1,
                                datePicker.getDayOfMonth()));
                        sb.append("  ");
                        sb.append(timePicker.getCurrentHour())
                        .append(":").append(timePicker.getCurrentMinute());

                        etStartTime.setText(sb);
                        etEndTime.requestFocus();
                        
                        dialog.cancel();
                    }
                });
                
            } else if (v.getId() == R.id.et_end_time) {
                int inType = etEndTime.getInputType();
                etEndTime.setInputType(InputType.TYPE_NULL);    
                etEndTime.onTouchEvent(event);
                etEndTime.setInputType(inType);
                etEndTime.setSelection(etEndTime.getText().length());

                builder.setTitle("选取结束时间");
                builder.setPositiveButton("确  定", new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        StringBuffer sb = new StringBuffer();
                        sb.append(String.format("%d-%02d-%02d", 
                                datePicker.getYear(), 
                                datePicker.getMonth() + 1, 
                                datePicker.getDayOfMonth()));
                        sb.append("  ");
                        sb.append(timePicker.getCurrentHour())
                        .append(":").append(timePicker.getCurrentMinute());
                        etEndTime.setText(sb);
                        
                        dialog.cancel();
                    }
                });
            }
            
            Dialog dialog = builder.create();
            dialog.show();
        }

        return true;
    }
    
}