QQWW1 QQWW1 - 24 days ago 13
Android Question

Updating TextView every N seconds?

I've been very confused about this recently and can't find an answer anywhere.

When programming for android, I want to update a textview every 10 seconds, but how would I go about that? I've seen some samples use "Run()" and "Update()", but that doesn't seem to help when I try it, any ideas?

Right now I have:



public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.slideshow);

CONST_TIME = (int) System.currentTimeMillis();

Resources res = getResources();
myString = res.getStringArray(R.array.myArray);
}

public void checkTime(View V){
TextView text = (TextView) findViewById(R.id.fadequote);
CUR_TIME = (int) System.currentTimeMillis();
text.setText(""+(int) (CUR_TIME-CONST_TIME));//Debugs how much time has gone by

if(CUR_TIME-CONST_TIME>10000){
getNextQuote(null); //A function that gets a random quote
CONST_TIME = CUR_TIME;
}
}



I guess what I'm REALLY asking is how do I make checkTime() repeat it-self endlessly until onPause() is called?

Answer

What about using a timer?

private Timer timer = new Timer();
private TimerTask timerTask;
timerTask = new TimerTask() {
 @Override
 public void run() {
    //refresh your textview
 }
};
timer.schedule(timerTask, 0, 10000);

Cancel it via timer.cancel(). In your run() method you could use runOnUiThread();

UPDATE:

I have a livescoring app, which uses this Timer to update it every 30 sec. It looks like this:

private Timer timer;
private TimerTask timerTask;

public void onPause(){
    super.onPause();
    timer.cancel();
}

public void onResume(){
    super.onResume();
    try {
       timer = new Timer();
       timerTask = new TimerTask() {
          @Override
          public void run() {
         //Download file here and refresh
          }
       };
    timer.schedule(timerTask, 30000, 30000);
    } catch (IllegalStateException e){
       android.util.Log.i("Damn", "resume error");
    }
}
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