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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.apis.view;
     18 
     19 import com.example.android.apis.R;
     20 
     21 import android.app.Activity;
     22 import android.app.DatePickerDialog;
     23 import android.app.TimePickerDialog;
     24 import android.app.Dialog;
     25 import android.os.Bundle;
     26 import android.widget.TextView;
     27 import android.widget.Button;
     28 import android.widget.DatePicker;
     29 import android.widget.TimePicker;
     30 import android.view.View;
     31 
     32 import java.util.Calendar;
     33 
     34 /**
     35  * Basic example of using date and time widgets, including
     36  * {@link android.app.TimePickerDialog} and {@link android.widget.DatePicker}.
     37  *
     38  * Also provides a good example of using {@link Activity#onCreateDialog},
     39  * {@link Activity#onPrepareDialog} and {@link Activity#showDialog} to have the
     40  * activity automatically save and restore the state of the dialogs.
     41  */
     42 public class DateWidgets1 extends Activity {
     43 
     44     // where we display the selected date and time
     45     private TextView mDateDisplay;
     46 
     47     // date and time
     48     private int mYear;
     49     private int mMonth;
     50     private int mDay;
     51     private int mHour;
     52     private int mMinute;
     53 
     54     static final int TIME_12_DIALOG_ID = 0;
     55     static final int TIME_24_DIALOG_ID = 1;
     56     static final int DATE_DIALOG_ID = 2;
     57 
     58     @Override
     59     protected void onCreate(Bundle savedInstanceState) {
     60         super.onCreate(savedInstanceState);
     61 
     62         setContentView(R.layout.date_widgets_example_1);
     63 
     64         mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
     65 
     66         setDialogOnClickListener(R.id.pickDate, DATE_DIALOG_ID);
     67         setDialogOnClickListener(R.id.pickTime12, TIME_12_DIALOG_ID);
     68         setDialogOnClickListener(R.id.pickTime24, TIME_24_DIALOG_ID);
     69 
     70         final Calendar c = Calendar.getInstance();
     71         mYear = c.get(Calendar.YEAR);
     72         mMonth = c.get(Calendar.MONTH);
     73         mDay = c.get(Calendar.DAY_OF_MONTH);
     74         mHour = c.get(Calendar.HOUR_OF_DAY);
     75         mMinute = c.get(Calendar.MINUTE);
     76 
     77         updateDisplay();
     78     }
     79 
     80     private void setDialogOnClickListener(int buttonId, final int dialogId) {
     81         Button b = (Button) findViewById(buttonId);
     82         b.setOnClickListener(new View.OnClickListener() {
     83             public void onClick(View v) {
     84                 showDialog(dialogId);
     85             }
     86         });
     87     }
     88 
     89     @Override
     90     protected Dialog onCreateDialog(int id) {
     91         switch (id) {
     92             case TIME_12_DIALOG_ID:
     93             case TIME_24_DIALOG_ID:
     94                 return new TimePickerDialog(this,
     95                         mTimeSetListener, mHour, mMinute, id == TIME_24_DIALOG_ID);
     96             case DATE_DIALOG_ID:
     97                 return new DatePickerDialog(this,
     98                             mDateSetListener,
     99                             mYear, mMonth, mDay);
    100         }
    101         return null;
    102     }
    103 
    104     @Override
    105     protected void onPrepareDialog(int id, Dialog dialog) {
    106         switch (id) {
    107             case TIME_12_DIALOG_ID:
    108             case TIME_24_DIALOG_ID:
    109                 ((TimePickerDialog) dialog).updateTime(mHour, mMinute);
    110                 break;
    111             case DATE_DIALOG_ID:
    112                 ((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);
    113                 break;
    114         }
    115     }
    116 
    117     private void updateDisplay() {
    118         mDateDisplay.setText(
    119             new StringBuilder()
    120                     // Month is 0 based so add 1
    121                     .append(mMonth + 1).append("-")
    122                     .append(mDay).append("-")
    123                     .append(mYear).append(" ")
    124                     .append(pad(mHour)).append(":")
    125                     .append(pad(mMinute)));
    126     }
    127 
    128     private DatePickerDialog.OnDateSetListener mDateSetListener =
    129             new DatePickerDialog.OnDateSetListener() {
    130 
    131                 public void onDateSet(DatePicker view, int year, int monthOfYear,
    132                         int dayOfMonth) {
    133                     mYear = year;
    134                     mMonth = monthOfYear;
    135                     mDay = dayOfMonth;
    136                     updateDisplay();
    137                 }
    138             };
    139 
    140     private TimePickerDialog.OnTimeSetListener mTimeSetListener =
    141             new TimePickerDialog.OnTimeSetListener() {
    142 
    143                 public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    144                     mHour = hourOfDay;
    145                     mMinute = minute;
    146                     updateDisplay();
    147                 }
    148             };
    149 
    150     private static String pad(int c) {
    151         if (c >= 10)
    152             return String.valueOf(c);
    153         else
    154             return "0" + String.valueOf(c);
    155     }
    156 }
    157