Easy Repeat Task Timer For Android With listener support.

how_to_use.java

RepeatTaskTimer timer = new RepeatTaskTimer(this, new RepeatTaskTimer.Listener() {
    @Override
    public void onTick(long remainMillis) {
        long minute = remainMillis / 60000;
        long second = (remainMillis % 60000) / 1000;
        btnResend.setText("Resend in " + minute + ":" + second);
    }

    @Override
    public void onFinish() {
        isExpired = true;
        btnResend.setText("OTP Expired!");
        btnVerify.setText("Resend OTP");
    }
}, 2 * 60 * 1000, 1000);
timer.start();

RepeatTaskTimer.java

import android.app.Activity;
import java.util.Timer;
import java.util.TimerTask;

public class RepeatTaskTimer extends TimerTask {
    private long timeInMillis;
    private long delay;
    private long finishTime;
    private Listener listener;
    private Activity activity;
    private Timer timer = new Timer();

    public RepeatTaskTimer(Activity activity, Listener listener, long finishTime, long delay) {
        this.listener = listener;
        this.activity = activity;
        this.timeInMillis = 0;
        this.delay = delay;
        this.finishTime = finishTime;
    }

    public RepeatTaskTimer(Activity activity, Listener listener, long finishTime) {
        this(activity, listener, finishTime, 1000);
    }

    public void start() {
        timer.scheduleAtFixedRate(this, 0, delay);
    }

    @Override
    public void run() {
        activity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                timeInMillis += delay;
                if (timeInMillis >= finishTime) {
                    listener.onFinish();
                    cancel();
                } else
                    listener.onTick(finishTime - timeInMillis);
            }
        });
    }

    public static interface Listener {
        void onTick(long remainMillis);

        void onFinish();
    }
}