RKK Android: Using android Time Picker

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);
 }
}