IT Blog Collection: Android Time Picker Example

In Android, you can use “android.widget.TimePicker” class to render a time picker component to select hour and minute in a pre-defined user interface.

In this tutorial, we show you how to render time picker component via android.widget.TimePicker in current page, and also in dialog box via android.app.TimePickerDialog. In addition, we also show you how to set a hour and minute in time picker component.

P.S This project is developed in Eclipse 3.7, and tested with Android 2.3.3.

1. TimePicker

Open “res/layout/main.xml” file, add time picker, label and button for demonstration.

File : res/layout/main.xml

<?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" >
 
    <Button
        android:id="@+id/btnChangeTime"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Change Time" />
 
    <TextView
        android:id="@+id/lblTime"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Current Time (H:M): "
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
    <TextView
        android:id="@+id/tvTime"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
    <TimePicker
        android:id="@+id/timePicker1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
 
</LinearLayout>

P.S The “TimePickerDialog” is declare in code, not XML.

2. Code Code

Read the code’s comment, it should be self-explanatory.

File : MyAndroidAppActivity.java

package com.mkyong.android;
 
import java.util.Calendar;
import android.app.Activity;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;
 
public class MyAndroidAppActivity extends Activity {
 
 private TextView tvDisplayTime;
 private TimePicker timePicker1;
 private Button btnChangeTime;
 
 private int hour;
 private int minute;
 
 static final int TIME_DIALOG_ID = 999;
 
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
 
  setCurrentTimeOnView();
  addListenerOnButton();
 
 }
 
 // display current time
 public void setCurrentTimeOnView() {
 
  tvDisplayTime = (TextView) findViewById(R.id.tvTime);
  timePicker1 = (TimePicker) findViewById(R.id.timePicker1);
 
  final Calendar c = Calendar.getInstance();
  hour = c.get(Calendar.HOUR_OF_DAY);
  minute = c.get(Calendar.MINUTE);
 
  // set current time into textview
  tvDisplayTime.setText(
                    new StringBuilder().append(pad(hour))
                                       .append(":").append(pad(minute)));
 
  // set current time into timepicker
  timePicker1.setCurrentHour(hour);
  timePicker1.setCurrentMinute(minute);
 
 }
 
 public void addListenerOnButton() {
 
  btnChangeTime = (Button) findViewById(R.id.btnChangeTime);
 
  btnChangeTime.setOnClickListener(new OnClickListener() {
 
   @Override
   public void onClick(View v) {
 
    showDialog(TIME_DIALOG_ID);
 
   }
 
  });
 
 }
 
 @Override
 protected Dialog onCreateDialog(int id) {
  switch (id) {
  case TIME_DIALOG_ID:
   // set time picker as current time
   return new TimePickerDialog(this, 
                                        timePickerListener, hour, minute,false);
 
  }
  return null;
 }
 
 private TimePickerDialog.OnTimeSetListener timePickerListener = 
            new TimePickerDialog.OnTimeSetListener() {
  public void onTimeSet(TimePicker view, int selectedHour,
    int selectedMinute) {
   hour = selectedHour;
   minute = selectedMinute;
 
   // set current time into textview
   tvDisplayTime.setText(new StringBuilder().append(pad(hour))
     .append(":").append(pad(minute)));
 
   // set current time into timepicker
   timePicker1.setCurrentHour(hour);
   timePicker1.setCurrentMinute(minute);
 
  }
 };
 
 private static String pad(int c) {
  if (c >= 10)
     return String.valueOf(c);
  else
     return "0" + String.valueOf(c);
 }
}