android控件开发之TimePicker和DatePicker

import android.os.Bundle;

import android.app.Activity;

import android.app.DatePickerDialog;

import android.app.Dialog;

import android.app.TimePickerDialog;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.DatePicker;

import android.widget.TimePicker;

public class MainActivity extends Activity {

private final int TIMER = 1;

private final int DATE = 2;

private Button showTimerButton = null;

private Button showDateButton = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

showTimerButton = (Button)findViewById(R.id.showTimePicker);

showTimerButton.setOnClickListener(new showTimerDialogListener());

showDateButton = (Button)findViewById(R.id.showDatePicker);

showDateButton.setOnClickListener(new showDateDialogListener());

}

//Date button的监听器

class showDateDialogListener implements OnClickListener{

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

//显示Date Diaolog

showDialog(DATE);

}

}

//Timer button 监听器

class showTimerDialogListener implements OnClickListener{

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

//显示ID为TIMER的dialog

showDialog(TIMER);

//TimePickerDialog timerDialog = new TimePickerDialog(this, onTimeSetListener, 22, 54, true);

//timerDialog.show();

}

}

//此方法由showDialog()调用并且传入Dialog ID

protected Dialog onCreateDialog(int id){

Dialog dialog = null;

switch(id){

//当ID为TIMER时，创建一个TimePickerDialog对象并且返回

case TIMER:

dialog =  new TimePickerDialog(this, onTimeSetListener, 22, 54, true);

break;

//当ID为DATE时，创建一个DatePickerDialog对象并且返回

case DATE:

dialog = new DatePickerDialog(this, onDateSetListener, 2014, 12, 10);

break;

}

return dialog;

}

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=".MainActivity" >

<TextView

android:id="@+id/myText"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/hello_world" />

<Button

android:id="@+id/showTimePicker"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_below="@id/myText"

android:text="@string/show_timer"/>

<Button

android:id="@+id/showDatePicker"

android:layout_height="wrap_content"

android:layout_width="fill_parent"

android:layout_below="@id/showTimePicker"

android:text="@string/show_date"/>

<resources>

<string name="app_name">PickerDialog</string>

<string name="action_settings">Settings</string>

<string name="hello_world">Hello world!</string>

<string name="show_timer">Show Time Dialog</string>

<string name="show_date">Show Date Dialog</string>