CODEWITHSUNDEEP
javaandroidtimemilliseconds
Bojje
Bojje

Reputation: 417

Want to stop milliseconds from increasing

I'm trying to create a timer app, but I have this problem with milliseconds.

When someone activates the timer I save the current milliseconds and then I just this to get the difference between them

long startMillisecond; long i = System.currentMillisecond() - startMillisecond

and then I display this variable i with some other code. However when I pause my program my variable i stays on the right value, but when I start the program again I get the "wrong" value since System.currentMillisecond() keeps increasing (internally), so it looks like it "jumps" over a couple of seconds

Example: Start app > variable i = System.currentMillisecond() - startMillisecond is equal to 0. And now if I pause for 5 seconds and then resume my variable i have the value of 5.

Anyone knows how I can let it be on the same value when I paus?

EDIT. Here is my code for my run function

String tempstring;

int millisec,sec,min,hour;

Handler handler;
Runnable runnable;

SensorManager mSensor;
Sensor accSensor;

Button startButton,stopButton,resetButton;
TextView whiteplayertime,blackplayertime,xt,yt,zt;

public void StartTimer(View view){
    mSensor.registerListener(this, accSensor, SensorManager.SENSOR_DELAY_NORMAL);
    handler = new Handler();
    runnable = new Runnable() {
        @Override
        public void run() {

           if(startmillisec <= 0){
                startmillisec = System.currentTimeMillis();
            }        
            tempmillisec = System.currentTimeMillis() - startmillisec;

            millisec = tempmillisec;
            millisec /= 100;
            millisec = millisec % 10;
            sec = TU.MILLISECONDS.toSeconds(tempmillisec);
            sec = sec % 60;
            min = TU.MILLISECONDS.toMinutes(tempmillisec);
            min = min % 60;
            hour = TU.MILLISECONDS.toHours(tempmillisec);
            hour = hour % 24;
            tempstring = String.format("%02d:%02d:%02d:%d",hour,min,sec,millisec);
            whiteplayertime.setText(tempstring);
            handler.post(this); //This is the last in the code
        }
    };
    handler.post(runnable);

Upvotes: 0

Views: 884

Answers (3)

cmantas
cmantas

Reputation: 1533

You need to keep track of the time in pause. Keep, on pause

long pauseTime=System.currentMillisecond()

and on un-pause

long timeInPause = System.currentMillisecond()-pauseTime

then

i= System.currentMillisecond() - startMillisecond - timeInPause

Upvotes: 1

Robin Dijkhof
Robin Dijkhof

Reputation: 19288

Create 3 field. StartPause the time in MS when the pause started. EndPause the time in MS when the pause stopped. TotalPause total pause time.

Every time the user pauses and continues add the difference to the total pause time. Subtract this from your total time

Upvotes: 0

Davide Lorenzo MARINO
Davide Lorenzo MARINO

Reputation: 26926

Simple save elapsed from the last stop value and save in a variable if the timer is ongoing or not.

public MyTimer {
    private long startTime;
    private long elapsed;
    private boolean running;

    public void start() {
        startTime = System.currentTimemillis();
        running = true;
    }

    public void stop() {
        elapsed = elapsed + System.currentTimemillis() - startTime; 
        running = false;   
    }

    public long getElapsed() {
        if (running) {
            return elapsed + System.currentTimemillis() - startTime;
        } else {
            return elapsed;
        }
    }
}

Upvotes: 1

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