Checking if CountDownTimer is running

问题

Ive been looking to see a method to see if a CountDownTimer is running or not, but I cant find a way to, any help would be greatly appreciated

if (position == 0) {

    mCountDown = new CountDownTimer((300 * 1000), 1000) {

        public void onTick(long millisUntilFinished) {
            mTextField.setText("seconds remaining: "
                    + millisUntilFinished / 1000);
        }

        public void onFinish() {
            mTextField.setText("0:00");
            String path = "/sdcard/Music/ZenPing.mp3";
            try {

                mp.reset();
                mp.setDataSource(path);
                mp.prepare();
                mp.start();

            } catch (IOException e) {
                Log.v(getString(R.string.app_name),
                        e.getMessage());
            }
        }
    }.start();

}

For that how can I check if mCountDown is currently running?

回答1:

Just put a boolean flag which indicate that by following code

boolean isRunning = false;

mCountDown = new CountDownTimer((300 * 1000), 1000) {

    public void onTick(long millisUntilFinished) {
        isRunning = true;
        //rest of code
    }

    public void onFinish() {
        isRunning= false;
        //rest of code
    }
}.start();

回答2:

onTick is your callback for a running process, you can either set a property to track the status.

isTimerRunning =false;

After start -> make it true; Inside OnTick -> make it true (not actually required, but a double check) Inside OnFinish -> make it false;

use the isTimerRunning property to track the status.

回答3:

Check if the CountDownTimer is Running and also if the app is running in the background.

@Override
protected void onCreate(Bundle savedInstanceState) {
    ...
    myButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            myButton.setText("Button clicked");
            countDownTimer = new CountDownTimer( 3000, 1000) {
                @Override
                public void onTick(long millisUntilFinished) {
                    //After turning the Smartphone the follow both methods do not work anymore
                    if (!runningBackground) {
                        myButton.setText("Calc: " + millisUntilFinished / 1000);
                        myTextView.setText("Calc: " + millisUntilFinished / 1000);
                    }
                }
                @Override
                public void onFinish() {
                    if (!runningBackground) {
                        //Do something
                    }
                    mTextMessage.setText("DONE");
                    runningBackground = false;
                    running = false;
                }
            };
            //timer started
            countDownTimer.start();
            running = true;
        }
    });
}

@Override
protected void onResume() {
    super.onResume();
    runningBackground = false;
}

@Override
protected void onPause() {
    runningBackground = true;
    super.onPause();
}

来源：https://stackoverflow.com/questions/21451396/checking-if-countdowntimer-is-running

标签

android

timer

countdowntimer