If you have already canceled one timer, you can’t re-start it, you’ll have to create a new one.
See this answer, it contains a video and the source code how I did something similar.
Basically there are two method: pause and resume
In pause:
public void pause() {
this.timer.cancel();
}
In resume:
public void resume() {
this.timer = new Timer();
this.timer.schedule( aTask, 0, 1000 );
}
That makes the perception of pause/resume.
If your timers perform different actions based on the state of the application you may consider use the StatePattern
Fist define a abstract state:
abstract class TaskState {
public void run();
public TaskState next();
}
And provide as many states as you like. The key is that one state leads you to another.
class InitialState extends TaskState {
public void run() {
System.out.println( "starting...");
}
public TaskState next() {
return new FinalState();
}
}
class FinalState extends TaskState {
public void run() {
System.out.println("Finishing...");
}
public TaskState next(){
return new InitialState();
}
}
And then you change the state in your timer.
Timer timer = new Timer();
TaskState state = new InitialState();
timer.schedule( new TimerTask() {
public void run() {
this.state.run();
if( shouldChangeState() ) {
this.state = this.state.next();
}
}
}, 0, 1000 );
Finally, if what you need is to perform the same thing, but at different rates, you may consider using the TimingFramework. It is a bit more complex but let’s you do cool animations, by allowing the painting of certain component take place at different rates ( instead of being linear )
