java.lang.Object

android.view.View

android.widget.AnalogClock

android.widget.TextView

android.widget.DigitalClock

AnalogClock & DigitalClock

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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:orientation="vertical" >

<AnalogClock

android:layout_width="match_parent"

android:layout_height="wrap_content" />

<DigitalClock

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:gravity="center" />

</LinearLayout>

Chrometer

시간 측정용 시계

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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:orientation="vertical" >

<Chronometer

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:format="Chronometer-%s"

android:gravity="center"

android:textSize="30dp" />

</LinearLayout>

TimePicker & DatePicker

시간, 날짜 선택창

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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:orientation="vertical" >

<TimePicker

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:timePickerMode="spinner" />

<DatePicker

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:datePickerMode="spinner" />

</LinearLayout>

Reserved Application with Date/Time widget

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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:baselineAligned="false"

android:orientation="vertical">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="vertical">

<Chronometer

android:id="@+id/chronometer1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:format="Reserving Time - %s"

android:gravity="center"

android:textSize="30dp" />

<Button

android:id="@+id/btnStart"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Start Reserve" />

<Button

android:id="@+id/btnStop"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Stop Reserve" />

</LinearLayout>

<RadioGroup

android:layout_width="wrap_content"

android:layout_height="wrap_content" >

<RadioButton

android:id="@+id/rdoCal"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Select Date" />

<RadioButton

android:id="@+id/rdoTime"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Select Time" />

</RadioGroup>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="0dip"

android:layout_weight="1" >

<FrameLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:gravity="center" >

<CalendarView

android:id="@+id/calendarView1"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:showWeekNumber="false" />

<TimePicker

android:id="@+id/timePicker1"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:timePickerMode="spinner" />

</FrameLayout>

</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:background="#ffffff" >

<Button

android:id="@+id/btnEnd"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Complete reserving" />

<TextView

android:id="@+id/tvYear"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="0000" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Y" />

<TextView

android:id="@+id/tvMonth"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="00" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="M" />

<TextView

android:id="@+id/tvDate"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="00" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="D" />

<TextView

android:id="@+id/tvHour"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="00" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="H" />

<TextView

android:id="@+id/tvMinute"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="00" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="M" />

</LinearLayout>

MainActivity.java

package com.example.myapplication;

import androidx.annotation.NonNull;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;

import android.graphics.Typeface;

import android.os.Bundle;

import android.os.SystemClock;

import android.view.View;

import android.widget.Button;

import android.widget.CalendarView;

import android.widget.CheckBox;

import android.widget.Chronometer;

import android.widget.CompoundButton;

import android.widget.ImageView;

import android.widget.RadioButton;

import android.widget.RadioGroup;

import android.widget.TextView;

import android.widget.TimePicker;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

Chronometer chrono;

Button btnStart, btnEnd, btnStop;

RadioButton rdoCal, rdoTime;

CalendarView calView;

TimePicker tPicker;

TextView tvYear, tvMonth, tvDay, tvHour, tvMinute;

int selectyear, selectmonth, selectday;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

setTitle("Reserving App");

btnStart=(Button)findViewById(R.id.btnStart);

btnEnd=(Button)findViewById(R.id.btnEnd);

btnStop=(Button)findViewById(R.id.btnStop);

chrono=(Chronometer)findViewById(R.id.chronometer1);

rdoCal=(RadioButton)findViewById(R.id.rdoCal);

rdoTime=(RadioButton)findViewById(R.id.rdoTime);

calView=(CalendarView)findViewById(R.id.calendarView1);

tPicker=(TimePicker)findViewById(R.id.timePicker1);

tvYear=(TextView)findViewById(R.id.tvYear);

tvMonth=(TextView)findViewById(R.id.tvMonth);

tvDay=(TextView)findViewById(R.id.tvDate);

tvHour=(TextView)findViewById(R.id.tvHour);

tvMinute=(TextView)findViewById(R.id.tvMinute);

tPicker.setVisibility(View.INVISIBLE);

calView.setVisibility(View.INVISIBLE);

rdoCal.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View view){

tPicker.setVisibility(View.INVISIBLE);

calView.setVisibility(View.VISIBLE);

}

});

rdoTime.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View view){

calView.setVisibility(View.INVISIBLE);

tPicker.setVisibility(View.VISIBLE);

}

});

btnStart.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View view){

chrono.setBase(SystemClock.elapsedRealtime());

chrono.start();

chrono.setTextColor(Color.RED);

}

});

btnStop.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View view){

moveTaskToBack(true);

finish();

android.os.Process.killProcess(android.os.Process.myPid());

}

});

btnEnd.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View view){

chrono.stop();

chrono.setTextColor(Color.BLUE);

tvYear.setText(Integer.toString(selectyear));

tvMonth.setText(Integer.toString(selectmonth));

tvDay.setText(Integer.toString(selectday));

tvHour.setText(Integer.toString(tPicker.getCurrentHour()));

tvMinute.setText(Integer.toString(tPicker.getCurrentMinute()));

}

});

calView.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {

@Override

public void onSelectedDayChange(@NonNull CalendarView calendarView, int i, int i1, int i2) {

selectyear=i;

selectmonth=i1;

selectday=i2;

}

});

}