ExecutorService can not reuse its thread
I have the following task:
void task()
Looper.preapre();
handler = new Handler();
runnable = new Runnable()
if(notDone)
doSth();
handler.postDelay(runnable,timeInterval);
else
handler.removeCallBacks(runnable);
returnResult(); / the task is done and return some results
handler.post(runnable);
Looper.loop();
I use ExecutorService with single worker thread to run this task, the 1st time it runs just fine but the 2nd time the task is never be executed because the worker thread is still running the 1st task although i call removeCallBacks. Does anyone know where the problem is? Thanks in advance.
PS: I have try Looper.quit() but it kills the thread so the executor can not run the task on the dead thread.
android multithreading asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
add a comment |
I have the following task:
void task()
Looper.preapre();
handler = new Handler();
runnable = new Runnable()
if(notDone)
doSth();
handler.postDelay(runnable,timeInterval);
else
handler.removeCallBacks(runnable);
returnResult(); / the task is done and return some results
handler.post(runnable);
Looper.loop();
I use ExecutorService with single worker thread to run this task, the 1st time it runs just fine but the 2nd time the task is never be executed because the worker thread is still running the 1st task although i call removeCallBacks. Does anyone know where the problem is? Thanks in advance.
PS: I have try Looper.quit() but it kills the thread so the executor can not run the task on the dead thread.
android multithreading asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
add a comment |
I have the following task:
void task()
Looper.preapre();
handler = new Handler();
runnable = new Runnable()
if(notDone)
doSth();
handler.postDelay(runnable,timeInterval);
else
handler.removeCallBacks(runnable);
returnResult(); / the task is done and return some results
handler.post(runnable);
Looper.loop();
I use ExecutorService with single worker thread to run this task, the 1st time it runs just fine but the 2nd time the task is never be executed because the worker thread is still running the 1st task although i call removeCallBacks. Does anyone know where the problem is? Thanks in advance.
PS: I have try Looper.quit() but it kills the thread so the executor can not run the task on the dead thread.
android multithreading asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
I have the following task:
void task()
Looper.preapre();
handler = new Handler();
runnable = new Runnable()
if(notDone)
doSth();
handler.postDelay(runnable,timeInterval);
else
handler.removeCallBacks(runnable);
returnResult(); / the task is done and return some results
handler.post(runnable);
Looper.loop();
I use ExecutorService with single worker thread to run this task, the 1st time it runs just fine but the 2nd time the task is never be executed because the worker thread is still running the 1st task although i call removeCallBacks. Does anyone know where the problem is? Thanks in advance.
PS: I have try Looper.quit() but it kills the thread so the executor can not run the task on the dead thread.
android multithreading android multithreading asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
asked Nov 2 '18 at 4:09
Quang NhatQuang Nhat
238
238
add a comment |
add a comment |
1 Answer
1
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oldest
votes
After doing a research, i found that when a looper is attached to a thread, it will keep the thread active all the time even the thread is idle, so the ExecutorService can not get back the idle thread
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
add a comment |
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oldest
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After doing a research, i found that when a looper is attached to a thread, it will keep the thread active all the time even the thread is idle, so the ExecutorService can not get back the idle thread
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
add a comment |
After doing a research, i found that when a looper is attached to a thread, it will keep the thread active all the time even the thread is idle, so the ExecutorService can not get back the idle thread
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
add a comment |
After doing a research, i found that when a looper is attached to a thread, it will keep the thread active all the time even the thread is idle, so the ExecutorService can not get back the idle thread
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
After doing a research, i found that when a looper is attached to a thread, it will keep the thread active all the time even the thread is idle, so the ExecutorService can not get back the idle thread
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
answered Nov 14 '18 at 3:03
Quang NhatQuang Nhat
238
238
add a comment |
add a comment |
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