Android之日期和时间对话框DatePickerDialog和TimePickerDialog

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.android_timedate.MainActivity" >

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="118dp"
android:textSize="20sp"
android:text="日期对话框" />

<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:textSize="20sp"
android:text="时间对话框" />

<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginTop="40dp"
android:ems="10" >

<requestFocus />
</EditText>

</RelativeLayout>

package com.example.android_timedate;

import java.util.Calendar;

import android.support.v7.app.ActionBarActivity;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

private Button btn1;
private Button btn2;
private EditText editText1;
private DatePickerDialog dateDialog;//日期对话框
private int year, monthOfYear, dayOfMonth;

private TimePickerDialog timeDialog;
private int hourOfDay,minute;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1=(Button) this.findViewById(R.id.button1);
btn2=(Button) this.findViewById(R.id.button2);
editText1=(EditText) this.findViewById(R.id.editText1);
Calendar calendar=Calendar.getInstance();
year=calendar.get(Calendar.YEAR);
monthOfYear=calendar.get(Calendar.MONTH);
dayOfMonth=calendar.get(Calendar.DAY_OF_MONTH);
dateDialog=new DatePickerDialog(this, new OnDateSetListener() {

@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
// TODO Auto-generated method stub
String text=year+"-"+(monthOfYear+1)+"-"+dayOfMonth;//把年月日设置到edittext中
editText1.setText(text);
}
}, year, monthOfYear, (dayOfMonth-1));
btn1.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
dateDialog.show();
}
});
hourOfDay=calendar.get(Calendar.HOUR_OF_DAY);
minute=calendar.get(Calendar.MINUTE);
timeDialog=new TimePickerDialog(MainActivity.this, new OnTimeSetListener() {

@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this, hourOfDay+":"+minute, 1).show();
}
}, hourOfDay, minute, true);
btn2.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
timeDialog.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);
}
}