Countdown timer with pause and resume

Question

I want to do countdown timer with pause and restart.Now i am displaying countdown timer By implenting ontick() and onfinish().please help me out.HEre is th code for countdow

Answer 1

public class MainActivity extends AppCompatActivity {

TextView textView;

CountDownTimer ctimer;
boolean runCountDown;
private long leftTime;
private static final long MILL_IN_FUTURE = 6000;

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

    textView = findViewById(R.id.text_view);
    textView.setText("Click to start");
    textView.setOnClickListener(this::clickStartAndPauseAndResume);
    leftTime = MILL_IN_FUTURE;

}


public void clickStartAndPauseAndResume(View view) {

    if (!runCountDown) {


        long time = (leftTime == 0 || leftTime == MILL_IN_FUTURE) ? MILL_IN_FUTURE : leftTime;
        ctimer = new CountDownTimer(time, 1) {

            @Override
            public void onTick(long l) {

                leftTime = l;
                textView.setText(l + "ms");
            }

            @Override
            public void onFinish() {

                textView.setText("Done");
                leftTime = 0;
                runCountDown = false;
                textView.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        textView.setText("Click to start");
                    }
                }, 1000);
            }
        }.start();
        runCountDown = true;
    } else {
        ctimer.cancel();
        textView.setText(textView.getText() + "\n Click to resume");
        runCountDown = false;
    }
 }
}