java - 暂停后继续倒计时

Question

我有一个倒计时计时器，我有一个暂停它的按钮，但我需要在您单击按钮时继续倒计时。我搜索但无法找到与此相关的功能。怎么办？这是我的代码，我只设法重新启动它，但没有继续:

private TextView cuentaRegresiva;
private Button btnEmpezar;
private CountDownTimer countDownTimer;
private boolean timerHasStarted = false;
private long startTime = 30 * 1000;
private final long interval = 1 * 1000;
private long restante;



@Override
protected void onCreate(Bundle savedInstanceState) {
...

btnEmpezar.setOnClickListener(iniciar);

 }

OnClickListener iniciar=new OnClickListener() {

    @Override
    public void onClick(View arg0) {
        if (!timerHasStarted && !pausado) {
               countDownTimer.start();
               timerHasStarted = true;
               btnEmpezar.setText("Pause");
               pausado=false;
                }
        else if(timerHasStarted && !pausado){
               countDownTimer.cancel();
               timerHasStarted = false;
               btnEmpezar.setText("Restart");
               pausado=true;
              }
        else if(!timerHasStarted && pausado){
            countDownTimer2.start();
            timerHasStarted = true;
            btnEmpezar.setText("Pause");
            pausado=false;
        }
    }
};

public class MyCountDownTimer extends CountDownTimer {
      public MyCountDownTimer(long startTime, long interval) {
       super(startTime, interval);

      }

      @Override
      public void onFinish() {
          cuentaRegresiva.setText("Tiempo!");
      }

      @Override
      public void onTick(long millisUntilFinished) {
          cuentaRegresiva.setText("" + millisUntilFinished / 1000);
      }
     }

public class MyCountDownTimer2 extends CountDownTimer {
          public MyCountDownTimer2(long restante, long interval) {
           super(restante, interval);

          }

          @Override
          public void onFinish() {
              cuentaRegresiva.setText("Tiempo!");
          }

          @Override
          public void onTick(long millisUntilFinished) {
              cuentaRegresiva.setText("" + millisUntilFinished / 1000);

          }
         }

我考虑过将 millisUntilFinished 设为变量，但没有成功。无论如何，我想这条路很接近。

Answer 1

您可以尝试保存秒数直到完成，然后您可以用该秒数启动新的倒数计时器。

//----------------------

Cuando presionas el boton de pausa，guarda los segundos que le faltan al timer para que termine。 Entonces, cuando volves apretar play, creas un nuevo CountDownTimer con esos segundos que te faltaban.

更新

我举了个例子:

public class MainActivity extends Activity {
    private static final int TIMER_TIME = 10000; // in millis
    private Button btnCountdown;
    private TextView tvTimeUntilFinish;
    private boolean mIsPaused = true;
    private long mMillisUntilFinish;
    private CountDownTimer mTimer;

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

        mMillisUntilFinish = TIMER_TIME;

        btnCountdown = (Button) findViewById(R.id.btnCountdown);
        tvTimeUntilFinish = (TextView) findViewById(R.id.tvTimeUntilFinish);

        btnCountdown.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                if (mIsPaused) {
                    btnCountdown.setText("Pause");
                    initTimer();
                } else {
                    btnCountdown.setText("Play");
                    cancelTimer();
                }

                mIsPaused = !mIsPaused;
            }
        });
    }

    private void cancelTimer() {

        if (mTimer != null) {
            mTimer.cancel();
            mTimer = null;
        }

    }

    private void initTimer() {
        mTimer = new CountDownTimer(mMillisUntilFinish, 1000) {
            public void onTick(long millisUntilFinished) {
                tvTimeUntilFinish.setText("seconds remaining: " + millisUntilFinished / 1000);
                mMillisUntilFinish = millisUntilFinished;
            }

            public void onFinish() {
            }
        }.start();

    }
}