<예제>
package com.example.helloandroid;
import android.graphics.Color;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Button;
import android.widget.CalendarView;
import android.widget.Chronometer;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.TimePicker;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
Chronometer chrono;
Button btnStart, btnEnd;
RadioButton rdoCal, rdoTime;
CalendarView calView;
TimePicker tPicker;
TextView tvYear, tvMonth, tvDay, tvHoure, tvMinute;
int selectYea, selectMonth, selectDay;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("시간 예약");
btnStart=(Button)findViewById(R.id.BtnStart);
btnEnd=(Button)findViewById(R.id.btnEnd);
chrono=(Chronometer)findViewById(R.id.meter1);
rdoCal=(RadioButton)findViewById(R.id.rdoCal);
rdoTime=(RadioButton)findViewById(R.id.rdoTime);
tPicker=(TimePicker)findViewById(R.id.picker1);
calView=(CalendarView)findViewById(R.id.calenderView1);
tvYear=(TextView)findViewById(R.id.tvYear);
tvMonth=(TextView)findViewById(R.id.tvMonth);
tvDay=(TextView)findViewById(R.id.tvDay);
tvMinute=(TextView)findViewById(R.id.tvMinute);
tPicker.setVisibility(View.INVISIBLE);
calView.setVisibility(View.INVISIBLE);
rdoCal.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
tPicker.setVisibility(View.INVISIBLE);
calView.setVisibility(View.VISIBLE);
}
});
rdoTime.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
tPicker.setVisibility(View.VISIBLE);
calView.setVisibility(View.INVISIBLE);
}
});
btnStart.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
chrono.setBase(SystemClock.elapsedRealtime());
chrono.start(); //크로노미터를 0으로 초기화(예약 시작을 누를 때마다)
chrono.setTextColor(Color.RED);
}
});
btnEnd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
chrono.stop();
chrono.setTextColor(Color.BLUE);
tvYear.setText(Integer.toString(selectYea));
tvMonth.setText(Integer.toString(selectMonth));
tvDay.setText(Integer.toString(selectDay));
//캘린더뷰에서 선택한 연월일을 해당하는 텍스트뷰에 채움
//이는 아래의 calview에서 대입됨
tvHoure.setText(tPicker.getCurrentHour());
tvMinute.setText(tPicker.getCurrentMinute());
//타임피커에서 설정한 시간과 분을 구해 가져온다
}
});
calView.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {
@Override
public void onSelectedDayChange
(@NonNull CalendarView calendarView, int i, int i1, int i2) {
selectYea=i;
selectMonth=i1+1;
selectDay=i2;
}
});
}
}
/////////////////////////////
<?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"
>
<LinearLayout
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:id="@+id/meter1"
android:format="예약에 걸린 시간 %s"
android:gravity="center"
android:textSize="20dp" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/BtnStart"
android:text="예약 시작"/>
</LinearLayout>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/rdoCal"
android:text="날짜 선정(캘린더뷰)"/>
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/rdoTime"
android:text="시간 설정"/>
</RadioGroup>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<!--캘린더가 포함된 리니어 레이아웃이 나머지 높이를 꽉 채우도록
layout_weight을 1로 설정 -->
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CalendarView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/calenderView1"
android:showWeekNumber="false" />
<TimePicker
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/picker1">
</TimePicker>
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#CCCCCC" >
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btnEnd"
android:text="예약 완료"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvYear"
android:text="0000" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="년" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvMonth"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="월" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvDay"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="일" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvTime"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="시" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvMinute"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="분" />
</LinearLayout>
</LinearLayout>
//////////////////////////////////////////
<직접 풀어보기>
package com.example.helloandroid;
import android.graphics.Color;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Chronometer;
import android.widget.DatePicker;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.TimePicker;
import androidx.appcompat.app.AppCompatActivity;
import static android.view.View.INVISIBLE;
public class MainActivity extends AppCompatActivity {
Chronometer chrono;
// Button btnStart, btnEnd;
RadioButton rdoCal, rdoTime;
DatePicker dpicker;
TimePicker tPicker;
TextView tvYear, tvMonth, tvDay, tvHoure, tvMinute;
int selectYea, selectMonth, selectDay;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("시간 예약(수정본)");
// btnStart=(Button)findViewById(R.id.BtnStart);
// btnEnd=(Button)findViewById(R.id.btnEnd);
chrono=(Chronometer)findViewById(R.id.meter1);
rdoCal=(RadioButton)findViewById(R.id.rdoCal);
rdoTime=(RadioButton)findViewById(R.id.rdoTime);
tPicker=(TimePicker)findViewById(R.id.picker1);
//calView=(CalendarView)findViewById(R.id.calenderView1);
dpicker=(DatePicker)findViewById(R.id.dateView1);
tvYear=(TextView)findViewById(R.id.tvYear);
tvMonth=(TextView)findViewById(R.id.tvMonth);
tvDay=(TextView)findViewById(R.id.tvDay);
tvMinute=(TextView)findViewById(R.id.tvMinute);
tvHoure=(TextView)findViewById(R.id.tvMinute);
tPicker.setVisibility(INVISIBLE);
dpicker.setVisibility(INVISIBLE);
// calView.setVisibility(View.INVISIBLE);
rdoCal.setVisibility(INVISIBLE);
rdoTime.setVisibility(INVISIBLE);
// rdoCal.setOnClickListener(new View.OnClickListener() {
// public void onClick(View v) {
// tPicker.setVisibility(View.INVISIBLE);
// calView.setVisibility(View.VISIBLE);
// }
// });
// rdoTime.setOnClickListener(new View.OnClickListener() {
// public void onClick(View v) {
// tPicker.setVisibility(View.VISIBLE);
// calView.setVisibility(View.INVISIBLE);
// }
//});
chrono.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
rdoCal.setVisibility(View.VISIBLE);
rdoTime.setVisibility(View.VISIBLE);
}
});
rdoCal.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
tPicker.setVisibility(View.VISIBLE);
dpicker.setVisibility(View.INVISIBLE);
}
});
rdoTime.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
tPicker.setVisibility(View.VISIBLE);
dpicker.setVisibility(View.INVISIBLE);
}
});
chrono.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
chrono.setBase(SystemClock.elapsedRealtime());
chrono.start();
chrono.setTextColor(Color.RED);
rdoCal.setVisibility(View.VISIBLE);
rdoTime.setVisibility(View.VISIBLE);
}
});
tvYear.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View view) {
chrono.stop();
chrono.setTextColor(Color.BLUE);
tvYear.setText(Integer.toString(dpicker.getYear()));
tvMonth.setText(Integer.toString(1+ dpicker.getMonth()));
tvDay.setText(Integer.toString(dpicker.getDayOfMonth()));
tvHoure.setText(Integer.toString(tPicker.getCurrentHour()));
tvMinute.setText(Integer.toString(tPicker.getCurrentMinute()));
rdoCal.setVisibility(INVISIBLE);
rdoTime.setVisibility(View.INVISIBLE);
dpicker.setVisibility(View.INVISIBLE);
tPicker.setVisibility(View.INVISIBLE);
return false;
}
});
}
}
///////////////
<?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"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<Chronometer
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/meter1"
android:format="예약에 걸린 시간 %s"
android:gravity="center"
android:textSize="20dp" />
</LinearLayout>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/rdoCal"
android:text="날짜 선정"/>
<RadioButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/rdoTime"
android:text="시간 설정"/>
</RadioGroup>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<!--캘린더가 포함된 리니어 레이아웃이 나머지 높이를 꽉 채우도록
layout_weight을 1로 설정 -->
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!--프레임 레이아웃: 한 곳에 동시에 두 개 위젯 등장.
데이트피커와 타임피커를 visible처리에 따라 보이게 안 보이게 한다.-->
<DatePicker
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/dateView1"
android:datePickerMode="spinner" />
<TimePicker
android:timePickerMode="spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/picker1"/>
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#CCCCCC" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvYear"
android:text="0000" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="년" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvMonth"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="월" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvDay"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="일" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvTime"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="시" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tvMinute"
android:text="00" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="분" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="예약됨"/>
</LinearLayout>
</LinearLayout>
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