codingsaathi_taskno5

package com.example.stopwatch;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Chronometer;
import android.widget.Button;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{
    private Button startbutton,pausebutton,resetbutton;
    private Chronometer chronometer;
    private long pasoffset;
    boolean running;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        startbutton=findViewById(R.id.startbutton);
        pausebutton=findViewById(R.id.pausebutton);
        resetbutton=findViewById(R.id.resetbutton);
        chronometer=findViewById(R.id.chronometer);
        startbutton.setOnClickListener(this);
        pausebutton.setOnClickListener(this);
        resetbutton.setOnClickListener(this);


    }
    public void onClick(View view)
    {
        switch(view.getId())
        {
            case R.id.startbutton:
                if(!running)
                {
                    chronometer.setBase(SystemClock.elapsedRealtime()-pasoffset);
                    chronometer.start();
                    running=true;
                }
                break;
            case R.id.pausebutton:
                if(running)
                {
                    chronometer.stop();
                    pasoffset=SystemClock.elapsedRealtime()-chronometer.getBase();
                    running=false;
                }
                break;
            case R.id.resetbutton:
                chronometer.setBase(SystemClock.elapsedRealtime());
                pasoffset=0;
                break;
        }
    }
}