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Android

Posted by Abhishek Patil
Abhishek Patil
3,329 Points

I want to loop this code

I am trying to make a 30s reminder in android studio. This code counts down from 30 to 0 but then stops, I want it to start counting from 30 again. how do I make a loop?

package com.example.a30sreminder;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle; import android.os.CountDownTimer; import android.view.View; import android.widget.Button; import android.widget.TextView;

public class MainActivity extends AppCompatActivity { private TextView countdownText; private Button countdownButton;

private CountDownTimer countDownTimer;
private long timeLeftInMilliseconds = 30000; //30 seconds
private boolean timerRunning;


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

    countdownText = findViewById(R.id.countdown_text);
    countdownButton = findViewById(R.id.countdown_button);

    countdownButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startStop();
            }
        });

        updateTimer();
    }

    public void startStop () {
        if (timerRunning) {
            stopTimer();
        } else {
            startTimer();
        }
    }

    public void startTimer () {

        countDownTimer = new CountDownTimer(timeLeftInMilliseconds, 1000) {
            @Override
            public void onTick(long l) {
                timeLeftInMilliseconds = l;
                updateTimer();

            }

            @Override
            public void onFinish() {

            }
        }.start();

        countdownButton.setText("Pause");

        timerRunning = true;
    }

    public void stopTimer () {
        countDownTimer.cancel();
        countdownButton.setText("Start");
        timerRunning = false;
    }

    public void updateTimer () {
        int seconds = (int) timeLeftInMilliseconds / 1000;

        String timeLeftText;
        timeLeftText = "" + seconds;

        countdownText.setText(timeLeftText);

    }

}