Monday, May 21, 2012

How to "wait" a Thread in Android 

private void startGameTimeElapseThread(){
     new Thread(new Runnable() {
         Date d = new Date();
         public void run() {
             while (gameOn){
                 Log.d(TAG,""+d.getTime()+" "+gameStatus.getLastTimeUpdated());
 
                 postInvalidate(795, 150, 1024, 300);
                 try {
                     synchronized (this) {
                         wait(1000); 
                     }
                 } catch (InterruptedException e) {
                     // TODO Auto-generated catch block
                     Log.d(TAG, "Waiting didnt work!!");
                     e.printStackTrace();
                 }
             }
         }
     }).start();
 }


Here I wanted to make call the "Log.d" and "postInvalidate" every one second. But when i check it from LogCat it seems loop runs faster than i want it to be. Why doesnt this loop just wait for 1000ms ?



Following are the output in LogCat. So you can see its not sleeping for a 1 second at all. I used Thread.sleep as well ( after you suggesting )



05-27 11:40:10.060: DEBUG/NOPSA-P(4546): 1306496408950 1306496387535
 05-27 11:40:10.070: DEBUG/NOPSA-P(4546): 1306496410037 1306496387535
 05-27 11:40:10.232: DEBUG/NOPSA-P(4546): 1306496410201 1306496387535
 05-27 11:40:10.250: DEBUG/NOPSA-P(4546): 1306496408214 1306496387535
 05-27 11:40:10.310: DEBUG/NOPSA-P(4546): 1306496405988 1306496387535
 05-27 11:40:10.361: DEBUG/NOPSA-P(4546): 1306496409327 1306496387535
 05-27 11:40:10.431: DEBUG/NOPSA-P(4546): 1306496410398 1306496387535
 05-27 11:40:10.521: DEBUG/NOPSA-P(4546): 1306496409478 1306496387535
 05-27 11:40:10.593: DEBUG/NOPSA-P(4546): 1306496410566 1306496387535
 05-27 11:40:11.230: DEBUG/NOPSA-P(4546): 1306496409678 1306496387535
 05-27 11:40:11.230: DEBUG/NOPSA-P(4546): 1306496410201 1306496387535
 05-27 11:40:11.241: DEBUG/NOPSA-P(4546): 1306496409878 1306496387535
 05-27 11:40:11.241: DEBUG/NOPSA-P(4546): 1306496410037 1306496387535
 05-27 11:40:11.241: DEBUG/NOPSA-P(4546): 1306496408950 1306496387535
 05-27 11:40:11.260: DEBUG/NOPSA-P(4546): 1306496408214 1306496387535
 05-27 11:40:11.314: DEBUG/NOPSA-P(4546): 1306496405988 1306496387535
 05-27 11:40:11.314: DEBUG/NOPSA-P(4546): 1306496411254 1306496387535
 05-27 11:40:11.361: DEBUG/NOPSA-P(4546): 1306496409327 1306496387535
 05-27 11:40:11.431: DEBUG/NOPSA-P(4546): 1306496410398 1306496387535
 05-27 11:40:11.520: DEBUG/NOPSA-P(4546): 1306496409478 1306496387535
 05-27 11:40:11.551: DEBUG/NOPSA-P(4546): 1306496411508 1306496387535
 05-27 11:40:11.712: DEBUG/NOPSA-P(4546): 1306496410566 1306496387535
 05-27 11:40:11.881: DEBUG/NOPSA-P(4546): 1306496411865 1306496387535
 05-27 11:40:12.051: DEBUG/NOPSA-P(4546): 1306496412025 1306496387535
 05-27 11:40:12.211: DEBUG/NOPSA-P(4546): 1306496412198 1306496387535
 05-27 11:40:12.231: DEBUG/NOPSA-P(4546): 1306496409678 1306496387535
 05-27 11:40:12.242: DEBUG/NOPSA-P(4546): 1306496410201 1306496387535
 05-27 11:40:12.251: DEBUG/NOPSA-P(4546): 1306496408950 1306496387535
 05-27 11:40:12.251: DEBUG/NOPSA-P(4546): 1306496409878 1306496387535
 05-27 11:40:12.251: DEBUG/NOPSA-P(4546): 1306496410037 1306496387535
 05-27 11:40:12.261: DEBUG/NOPSA-P(4546): 1306496408214 1306496387535
 05-27 11:40:12.311: DEBUG/NOPSA-P(4546): 1306496405988 1306496387535
 05-27 11:40:12.341: DEBUG/NOPSA-P(4546): 1306496411254 1306496387535
 05-27 11:40:12.371: DEBUG/NOPSA-P(4546): 1306496409327 1306496387535
 05-27 11:40:12.442: DEBUG/NOPSA-P(4546): 1306496410398 1306496387535
 05-27 11:40:12.471: DEBUG/NOPSA-P(4546): 1306496412431 1306496387535
 05-27 11:40:12.521: DEBUG/NOPSA-P(4546): 1306496409478 1306496387535
 05-27 11:40:12.553: DEBUG/NOPSA-P(4546): 1306496411508 1306496387535
 05-27 11:40:12.671: DEBUG/NOPSA-P(4546): 1306496412639 1306496387535
 05-27 11:40:12.711: DEBUG/NOPSA-P(4546): 1306496410566 1306496387535
 05-27 11:40:12.841: DEBUG/NOPSA-P(4546): 1306496412813 1306496387535
 05-27 11:40:12.891: DEBUG/NOPSA-P(4546): 1306496411865 1306496387535
 05-27 11:40:13.001: DEBUG/NOPSA-P(4546): 1306496412983 1306496387535
 05-27 11:40:13.051: DEBUG/NOPSA-P(4546): 1306496412025 1306496387535
 05-27 11:40:13.193: DEBUG/NOPSA-P(4546): 1306496413166 1306496387535
 05-27 11:40:13.231: DEBUG/NOPSA-P(4546): 1306496409678 1306496387535
 05-27 11:40:13.251: DEBUG/NOPSA-P(4546): 1306496410201 1306496387535
 05-27 11:40:13.251: DEBUG/NOPSA-P(4546): 1306496409878 1306496387535
 05-27 11:40:13.251: DEBUG/NOPSA-P(4546): 1306496410037 1306496387535
 05-27 11:40:13.251: DEBUG/NOPSA-P(4546): 1306496408950 1306496387535
 05-27 11:40:13.261: DEBUG/NOPSA-P(4546): 1306496408214 1306496387535
 05-27 11:40:13.271: DEBUG/NOPSA-P(4546): 1306496412198 1306496387535
 05-27 11:40:13.321: DEBUG/NOPSA-P(4546): 1306496405988 1306496387535
 05-27 11:40:13.341: DEBUG/NOPSA-P(4546): 1306496411254 1306496387535
 05-27 11:40:13.371: DEBUG/NOPSA-P(4546): 1306496409327 1306496387535
 05-27 11:40:13.431: DEBUG/NOPSA-P(4546): 1306496413405 1306496387535
 05-27 11:40:13.441: DEBUG/NOPSA-P(4546): 1306496410398 1306496387535
 05-27 11:40:13.481: DEBUG/NOPSA-P(4546): 1306496412431 1306496387535
 05-27 11:40:13.532: DEBUG/NOPSA-P(4546): 1306496409478 1306496387535


This is the latest Code. gameOn is a boolean, for now it's true.



private void startGameTimeElapseThread(){
     if (gameOn){
         new Thread(new Runnable() {
             Date d = new Date();
             public void run() {
 
                     Log.d(TAG,""+d.getTime()+"ms  "+d.getTime()/1000+"sec");
                     postInvalidate(795, 150, 1024, 300);
                     android.os.SystemClock.sleep(1000); 
                     startGameTimeElapseThread();
 
             }
         }).start();
     }
 }


The output is 



05-27 12:00:51.211: DEBUG/NOPSA-P(5098): 1306497650761ms  1306497650sec
 05-27 12:00:51.211: DEBUG/NOPSA-P(5098): 1306497650786ms  1306497650sec
 05-27 12:00:51.221: DEBUG/NOPSA-P(5098): 1306497650764ms  1306497650sec
 05-27 12:00:51.221: DEBUG/NOPSA-P(5098): 1306497650763ms  1306497650sec
 05-27 12:00:51.221: DEBUG/NOPSA-P(5098): 1306497650769ms  1306497650sec
 05-27 12:00:51.231: DEBUG/NOPSA-P(5098): 1306497650749ms  1306497650sec
 05-27 12:00:51.231: DEBUG/NOPSA-P(5098): 1306497650736ms  1306497650sec
 05-27 12:00:51.231: DEBUG/NOPSA-P(5098): 1306497650742ms  1306497650sec
 05-27 12:00:51.241: DEBUG/NOPSA-P(5098): 1306497650746ms  1306497650sec
 05-27 12:00:51.241: DEBUG/NOPSA-P(5098): 1306497650848ms  1306497650sec
 05-27 12:00:51.251: DEBUG/NOPSA-P(5098): 1306497650729ms  1306497650sec
 05-27 12:00:51.271: DEBUG/NOPSA-P(5098): 1306497650739ms  1306497650sec
 05-27 12:00:51.271: DEBUG/NOPSA-P(5098): 1306497650739ms  1306497650sec
 05-27 12:00:51.271: DEBUG/NOPSA-P(5098): 1306497650868ms  1306497650sec
 05-27 12:00:51.271: DEBUG/NOPSA-P(5098): 1306497650798ms  1306497650sec
 05-27 12:00:51.281: DEBUG/NOPSA-P(5098): 1306497650870ms  1306497650sec
 05-27 12:00:51.291: DEBUG/NOPSA-P(5098): 1306497651020ms  1306497651sec
 05-27 12:00:51.551: DEBUG/NOPSA-P(5098): 1306497651498ms  1306497651sec
 05-27 12:00:51.551: DEBUG/NOPSA-P(5098): 1306497651502ms  1306497651sec
 05-27 12:00:51.642: DEBUG/NOPSA-P(5098): 1306497651523ms  1306497651sec
 05-27 12:00:51.651: DEBUG/NOPSA-P(5098): 1306497651537ms  1306497651sec
 05-27 12:00:51.691: DEBUG/NOPSA-P(5098): 1306497651529ms  1306497651sec
 05-27 12:00:51.701: DEBUG/NOPSA-P(5098): 1306497651534ms  1306497651sec
 05-27 12:00:51.784: DEBUG/NOPSA-P(5098): 1306497651527ms  1306497651sec
 05-27 12:00:51.801: DEBUG/NOPSA-P(5098): 1306497651570ms  1306497651sec
 05-27 12:00:51.801: DEBUG/NOPSA-P(5098): 1306497651564ms  1306497651sec
 05-27 12:00:51.891: DEBUG/NOPSA-P(5098): 1306497651682ms  1306497651sec
 05-27 12:00:51.891: DEBUG/NOPSA-P(5098): 1306497651690ms  1306497651sec
 05-27 12:00:51.891: DEBUG/NOPSA-P(5098): 1306497651685ms  1306497651sec
 05-27 12:00:51.901: DEBUG/NOPSA-P(5098): 1306497651693ms  1306497651sec
 05-27 12:00:51.914: DEBUG/NOPSA-P(5098): 1306497651647ms  1306497651sec
 05-27 12:00:51.914: DEBUG/NOPSA-P(5098): 1306497651667ms  1306497651sec
 05-27 12:00:51.921: DEBUG/NOPSA-P(5098): 1306497651666ms  1306497651sec
 05-27 12:00:51.921: DEBUG/NOPSA-P(5098): 1306497651658ms  1306497651sec
 05-27 12:00:51.921: DEBUG/NOPSA-P(5098): 1306497651663ms  1306497651sec
 05-27 12:00:51.932: DEBUG/NOPSA-P(5098): 1306497651688ms  1306497651sec
 05-27 12:00:51.941: DEBUG/NOPSA-P(5098): 1306497651711ms  1306497651sec
 05-27 12:00:51.961: DEBUG/NOPSA-P(5098): 1306497651792ms  1306497651sec
 05-27 12:00:51.971: DEBUG/NOPSA-P(5098): 1306497651629ms  1306497651sec
 05-27 12:00:51.981: DEBUG/NOPSA-P(5098): 1306497651714ms  1306497651sec
 05-27 12:00:52.083: DEBUG/NOPSA-P(5098): 1306497652048ms  1306497652sec



Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)