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I need a timer for my program. I have written it and it works fine on PC in emulalator program (Android 1.5/2.2). But it doesn't work on the real device (Android 1.5). What am I doing wrong?
TimerTask task = new TimerTask() {
public void run() {
if (condition) {
myFunc();
} else {
this.cancel();
}
}
};
Timer timer = new Timer();
timer.schedule(task, 500, 85);
472
Timer and TimerTask are java util classes that we use to schedule tasks in a background thread. Basically, TimerTask is the task to perform, and Timer is the scheduler.
TimerTask is an abstract class defined in java. util package. TimerTask class defines a task that can be scheduled to run for just once or for repeated number of time. In order to define a TimerTask object, this class needs to be implemented and the run method need to be overridden.
delay - delay in milliseconds before task is to be executed. period - time in milliseconds between successive task executions. (Your IDE should also show it to you automatically) So delay is the time from now till the first execution, and after that it executes every period milliseconds again.
Handler is better than TimerTask . The Java TimerTask and the Android Handler both allow you to schedule delayed and repeated tasks on background threads. However, the literature overwhelmingly recommends using Handler over TimerTask in Android (see here, here, here, here, here, and here).
You need to cancel() timer not the timer task.
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