Android Timer Stopwatch 만들기~ 소스코드 예제

예시 1 : chronometer사용

start 버튼 누르면 pause버튼으로 바뀌며, start시 m:s로 시간이 표시된다.

activity_timer.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:padding="15dp"
    android:orientation="vertical"
    android:gravity="center_horizontal">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Stop Watch"
        android:textSize="20dp"
        android:gravity="center"
        android:layout_marginBottom="10dp"/>

    <Chronometer
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="20dp"
        android:id="@+id/chronometer"
        android:layout_marginBottom="10dp"/>

    <Button
        android:id="@+id/startBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:text="Start" />

    <Button
        android:id="@+id/pauseBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:text="Pause"
        android:visibility="gone" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Reset"
        android:id="@+id/resetBtn"
        android:layout_marginBottom="10dp"/>
</LinearLayout>

MainActivity.java

import android.os.SystemClock;  
import android.support.v7.app.AppCompatActivity;  
import android.os.Bundle;  
import android.view.View;  
import android.widget.Button;  
import android.widget.Chronometer;

public class /\_이름주의\_/TimerActivity extends AppCompatActivity {  
Chronometer chronometer;  
Button startBtn, pauseBtn, resetBtn;  
long stopTime = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_timer);/*이름주의*/

    chronometer = (Chronometer)findViewById(R.id.chronometer);
    startBtn = (Button)findViewById(R.id.startBtn);
    pauseBtn = (Button)findViewById(R.id.pauseBtn);
    resetBtn = (Button)findViewById(R.id.resetBtn);


startBtn.setOnClickListener(new View.OnClickListener() {  
@Override  
public void onClick(View v) {  
chronometer.setBase(SystemClock.elapsedRealtime() + stopTime);  
chronometer.start();  
startBtn.setVisibility(View.GONE);  
pauseBtn.setVisibility(View.VISIBLE);  
}  
});

    pauseBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            stopTime = chronometer.getBase() - SystemClock.elapsedRealtime();
            chronometer.stop();
            startBtn.setVisibility(View.VISIBLE);
            pauseBtn.setVisibility(View.GONE);
        }
    });

    resetBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            chronometer.setBase(SystemClock.elapsedRealtime());
            stopTime = 0;
            chronometer.stop();
            startBtn.setVisibility(View.VISIBLE);
            pauseBtn.setVisibility(View.GONE);
        }
    });
}

}  

---

예시 2 : 스레드사용

Runnable에서 SystemClock 내의 uptimeMillis()함수를 사용했다.

static long elapsedRealtime()
딥슬립 시간을 포함한 부팅 후 경과한 시간을 밀리초 단위로 리턴함.

static long uptimeMillis()
딥슬립 시간을 제외한 부팅 후 경과한 시간을 밀리초 단위로 리턴함.

참고URL : http://don-forget.blogspot.com/2012/05/blog-post.html

activity_timer.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:background="#ECEFF1">

    <TextView
        android:text="00:00:00"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textView"
        android:textSize="50dp"
        android:textStyle="bold"
        android:textColor="#009688"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true" />

    <Button
        android:text="Start"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="41dp"
        android:id="@+id/button" />

    <Button
        android:text="Pause"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/button2"
        android:layout_alignBaseline="@+id/button"
        android:layout_alignBottom="@+id/button"
        android:layout_centerHorizontal="true" />

    <Button
        android:text="Reset"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/button2"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:id="@+id/button3" />

    <Button
        android:text="Save Lap"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:id="@+id/button4"
        android:layout_below="@+id/button"
        android:layout_centerHorizontal="true" />

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/button4"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="12dp"
        android:id="@+id/listview1"/>

</RelativeLayout>

TimerActivity.java

package com.gkskfhdlstmapk.hanpinetree.bcsd_navi_listview_calc;

import android.os.Handler;
import android.os.SystemClock;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Chronometer;
import android.widget.ListView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class TimerActivity extends AppCompatActivity {

    TextView textView ;

    Button start, pause, reset, lap ;

    long MillisecondTime, StartTime, TimeBuff, UpdateTime = 0L ;

    Handler handler;

    int Seconds, Minutes, MilliSeconds ;

    ListView listView ;

    String[] ListElements = new String[] {  };

    List<String> ListElementsArrayList ;

    ArrayAdapter<String> adapter ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_timer);

        textView = (TextView)findViewById(R.id.textView);
        start = (Button)findViewById(R.id.button);
        pause = (Button)findViewById(R.id.button2);
        reset = (Button)findViewById(R.id.button3);
        lap = (Button)findViewById(R.id.button4) ;
        listView = (ListView)findViewById(R.id.listview1);

        handler = new Handler() ;

        ListElementsArrayList = new ArrayList<String>(Arrays.asList(ListElements));

        adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1,
                ListElementsArrayList
        );

        listView.setAdapter(adapter);

        start.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                StartTime = SystemClock.uptimeMillis();
                handler.postDelayed(runnable, 0);

                reset.setEnabled(false);

            }
        });

        pause.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                TimeBuff += MillisecondTime;

                handler.removeCallbacks(runnable);

                reset.setEnabled(true);

            }
        });

        reset.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                MillisecondTime = 0L ;
                StartTime = 0L ;
                TimeBuff = 0L ;
                UpdateTime = 0L ;
                Seconds = 0 ;
                Minutes = 0 ;
                MilliSeconds = 0 ;

                textView.setText("00:00:00");

                ListElementsArrayList.clear();

                adapter.notifyDataSetChanged();
            }
        });

        lap.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                ListElementsArrayList.add(textView.getText().toString());

                adapter.notifyDataSetChanged();

            }
        });

    }

    public Runnable runnable = new Runnable() {

        public void run() {

            MillisecondTime = SystemClock.uptimeMillis() - StartTime;

            UpdateTime = TimeBuff + MillisecondTime;

            Seconds = (int) (UpdateTime / 1000);

            Minutes = Seconds / 60;

            Seconds = Seconds % 60;

            MilliSeconds = (int) (UpdateTime % 1000);

            textView.setText("" + Minutes + ":"
                    + String.format("%02d", Seconds) + ":"
                    + String.format("%03d", MilliSeconds));

            handler.postDelayed(this, 0);
        }

    };

}