Re: [android-developers] Re: Handler.postDelayed not working when screen goes off
:) yeah I find the emulator slow its just easier with a phone.
On 29 November 2010 11:39, Evi Song evis...@gmail.com wrote:
Thank you all for the discussion which saves my investigation.
I was using the Handler.postDelayed() with something like a
AlarmRunner to make a count down. Then I get the same problem that,
handler paused when my phone standby.
I'll switch to AlarmManager instead according to your suggestions.
Btw, seems it's really important for Android developers to get a real
phone for testing. Emulator is just emulator...
On Nov 29, 1:31 am, Kostya Vasilyev kmans...@gmail.com wrote:
Paul,
You don't need a Service or a Handler to handle events from Alarm
Manager - just a Broadcast Receiver. It's even better, in that Android
guarantees to hold a wake lock for the duration of your receiver's
onReceive.
-- Kostya
28.11.2010 18:59, Paul Townsend ?:
Hi guys thx for your help, been playing around with it and I tried
setting up a service which works, but this will run in the background
all the time so if I use an alarm manager how accurate is it can you
set one for say 30 seconds time, or is it still bad to use a service
even though all its doing is waiting for handler.post() to come along
to play a sound. The timer is designed to have several times per timer
so each timer will finish several times, i.e pyramid splits, and can
have many timers
On 21 November 2010 23:30, Dianne Hackborn hack...@android.com
mailto:hack...@android.com wrote:
You don't need to try around with different things, the behavior
is very well defined: if you are not holding a wake lock, the CPU
is allowed to go to full sleep, so no code can be executed until
an external event wakes it up. A thread sitting there waiting on
a timer is never an external event.
If you need to make sure you wake up even if the CPU is asleep,
use the AlarmManager.
On Sun, Nov 21, 2010 at 8:21 AM, Paul Townsend deer...@gmail.com
mailto:deer...@gmail.com wrote:
Just tried that bvut dose the same thing, although I have used
countdownTimer in a custom TextView that I wrote so I could
have a countdown timer for the UI and this dose not pause. I
might look into to transfering the other timer bits to the
text view and use that as a all in one timer solution and see
if that works.
On 21 November 2010 03:34, Hal dsheppar...@gmail.com
mailto:dsheppar...@gmail.com wrote:
You may want to look at CountDownTime also. It seems to
work fine
(even when the Screen goes off).
I took the following from the web:
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long
countDownInterval) {
super(millisInFuture, countDownInterval);
}
public void onFinish() {
counter = new MyCount(5000, 1000);
counter.start ();
}
public void onTick(long millisUntilFinished) {
tv.setText(Hal: + timer.getTime());
}
}
The timer component uses a Live Jt component (separate
thread):
private void timer() {
JtFactory main = new JtFactory ();
// Create the component
timer = (Timer) main.createObject
(Timer.JtCLASS_NAME);
// Asynchronous processing of messages.
main.setSynchronous(false);
main.sendMessage (timer, new JtMessage
(Timer.UPDATE_TIME));
}
.
counter = new MyCount(5000, 1000);
counter.start();
setContentView(tv);
...
On Nov 20, 3:58 pm, Paul Townsend deer...@gmail.com
mailto:deer...@gmail.com wrote:
I made a simple countdown timer and it works as expected
when plugged
in via usb for debugging but when I take it off
debugging and the
screen goes off either time out or power button the
handler fails to
fire at the end time. I have created a custom timer
class that gets
created from the main activity when needed, because its
able to have
multiple countdowns running at the same time. Am I right
in thinking
that the handler just gets paused when the screen goes
off and if so
what are my
[android-developers] Re: Handler.postDelayed not working when screen goes off
Thank you all for the discussion which saves my investigation.
I was using the Handler.postDelayed() with something like a
AlarmRunner to make a count down. Then I get the same problem that,
handler paused when my phone standby.
I'll switch to AlarmManager instead according to your suggestions.
Btw, seems it's really important for Android developers to get a real
phone for testing. Emulator is just emulator...
On Nov 29, 1:31 am, Kostya Vasilyev kmans...@gmail.com wrote:
Paul,
You don't need a Service or a Handler to handle events from Alarm
Manager - just a Broadcast Receiver. It's even better, in that Android
guarantees to hold a wake lock for the duration of your receiver's
onReceive.
-- Kostya
28.11.2010 18:59, Paul Townsend ?:
Hi guys thx for your help, been playing around with it and I tried
setting up a service which works, but this will run in the background
all the time so if I use an alarm manager how accurate is it can you
set one for say 30 seconds time, or is it still bad to use a service
even though all its doing is waiting for handler.post() to come along
to play a sound. The timer is designed to have several times per timer
so each timer will finish several times, i.e pyramid splits, and can
have many timers
On 21 November 2010 23:30, Dianne Hackborn hack...@android.com
mailto:hack...@android.com wrote:
You don't need to try around with different things, the behavior
is very well defined: if you are not holding a wake lock, the CPU
is allowed to go to full sleep, so no code can be executed until
an external event wakes it up. A thread sitting there waiting on
a timer is never an external event.
If you need to make sure you wake up even if the CPU is asleep,
use the AlarmManager.
On Sun, Nov 21, 2010 at 8:21 AM, Paul Townsend deer...@gmail.com
mailto:deer...@gmail.com wrote:
Just tried that bvut dose the same thing, although I have used
countdownTimer in a custom TextView that I wrote so I could
have a countdown timer for the UI and this dose not pause. I
might look into to transfering the other timer bits to the
text view and use that as a all in one timer solution and see
if that works.
On 21 November 2010 03:34, Hal dsheppar...@gmail.com
mailto:dsheppar...@gmail.com wrote:
You may want to look at CountDownTime also. It seems to
work fine
(even when the Screen goes off).
I took the following from the web:
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long
countDownInterval) {
super(millisInFuture, countDownInterval);
}
public void onFinish() {
counter = new MyCount(5000, 1000);
counter.start ();
}
public void onTick(long millisUntilFinished) {
tv.setText(Hal: + timer.getTime());
}
}
The timer component uses a Live Jt component (separate
thread):
private void timer() {
JtFactory main = new JtFactory ();
// Create the component
timer = (Timer) main.createObject (Timer.JtCLASS_NAME);
// Asynchronous processing of messages.
main.setSynchronous(false);
main.sendMessage (timer, new JtMessage
(Timer.UPDATE_TIME));
}
.
counter = new MyCount(5000, 1000);
counter.start();
setContentView(tv);
...
On Nov 20, 3:58 pm, Paul Townsend deer...@gmail.com
mailto:deer...@gmail.com wrote:
I made a simple countdown timer and it works as expected
when plugged
in via usb for debugging but when I take it off
debugging and the
screen goes off either time out or power button the
handler fails to
fire at the end time. I have created a custom timer
class that gets
created from the main activity when needed, because its
able to have
multiple countdowns running at the same time. Am I right
in thinking
that the handler just gets paused when the screen goes
off and if so
what are my alternatives. The activity is still in the
foreground and
I assumed the handler would still fire if the screen
goes off.
--
You received this message because you are
Re: [android-developers] Re: Handler.postDelayed not working when screen goes off
Hi guys thx for your help, been playing around with it and I tried setting
up a service which works, but this will run in the background all the time
so if I use an alarm manager how accurate is it can you set one for say 30
seconds time, or is it still bad to use a service even though all its doing
is waiting for handler.post() to come along to play a sound. The timer is
designed to have several times per timer so each timer will finish several
times, i.e pyramid splits, and can have many timers
On 21 November 2010 23:30, Dianne Hackborn hack...@android.com wrote:
You don't need to try around with different things, the behavior is very
well defined: if you are not holding a wake lock, the CPU is allowed to go
to full sleep, so no code can be executed until an external event wakes it
up. A thread sitting there waiting on a timer is never an external event.
If you need to make sure you wake up even if the CPU is asleep, use the
AlarmManager.
On Sun, Nov 21, 2010 at 8:21 AM, Paul Townsend deer...@gmail.com wrote:
Just tried that bvut dose the same thing, although I have used
countdownTimer in a custom TextView that I wrote so I could have a countdown
timer for the UI and this dose not pause. I might look into to transfering
the other timer bits to the text view and use that as a all in one timer
solution and see if that works.
On 21 November 2010 03:34, Hal dsheppar...@gmail.com wrote:
You may want to look at CountDownTime also. It seems to work fine
(even when the Screen goes off).
I took the following from the web:
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
public void onFinish() {
counter = new MyCount(5000, 1000);
counter.start ();
}
public void onTick(long millisUntilFinished) {
tv.setText(Hal: + timer.getTime());
}
}
The timer component uses a Live Jt component (separate thread):
private void timer() {
JtFactory main = new JtFactory ();
// Create the component
timer = (Timer) main.createObject (Timer.JtCLASS_NAME);
// Asynchronous processing of messages.
main.setSynchronous(false);
main.sendMessage (timer, new JtMessage (Timer.UPDATE_TIME));
}
.
counter = new MyCount(5000, 1000);
counter.start();
setContentView(tv);
...
On Nov 20, 3:58 pm, Paul Townsend deer...@gmail.com wrote:
I made a simple countdown timer and it works as expected when plugged
in via usb for debugging but when I take it off debugging and the
screen goes off either time out or power button the handler fails to
fire at the end time. I have created a custom timer class that gets
created from the main activity when needed, because its able to have
multiple countdowns running at the same time. Am I right in thinking
that the handler just gets paused when the screen goes off and if so
what are my alternatives. The activity is still in the foreground and
I assumed the handler would still fire if the screen goes off.
--
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--
Dianne Hackborn
Android framework engineer
hack...@android.com
Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails. All such
questions should be posted on public forums, where I and others can see and
answer them.
--
You received this message because you are subscribed to the Google
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To post to this group, send email to android-developers@googlegroups.com
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Re: [android-developers] Re: Handler.postDelayed not working when screen goes off
Paul,
You don't need a Service or a Handler to handle events from Alarm
Manager - just a Broadcast Receiver. It's even better, in that Android
guarantees to hold a wake lock for the duration of your receiver's
onReceive.
-- Kostya
28.11.2010 18:59, Paul Townsend ?:
Hi guys thx for your help, been playing around with it and I tried
setting up a service which works, but this will run in the background
all the time so if I use an alarm manager how accurate is it can you
set one for say 30 seconds time, or is it still bad to use a service
even though all its doing is waiting for handler.post() to come along
to play a sound. The timer is designed to have several times per timer
so each timer will finish several times, i.e pyramid splits, and can
have many timers
On 21 November 2010 23:30, Dianne Hackborn hack...@android.com
mailto:hack...@android.com wrote:
You don't need to try around with different things, the behavior
is very well defined: if you are not holding a wake lock, the CPU
is allowed to go to full sleep, so no code can be executed until
an external event wakes it up. A thread sitting there waiting on
a timer is never an external event.
If you need to make sure you wake up even if the CPU is asleep,
use the AlarmManager.
On Sun, Nov 21, 2010 at 8:21 AM, Paul Townsend deer...@gmail.com
mailto:deer...@gmail.com wrote:
Just tried that bvut dose the same thing, although I have used
countdownTimer in a custom TextView that I wrote so I could
have a countdown timer for the UI and this dose not pause. I
might look into to transfering the other timer bits to the
text view and use that as a all in one timer solution and see
if that works.
On 21 November 2010 03:34, Hal dsheppar...@gmail.com
mailto:dsheppar...@gmail.com wrote:
You may want to look at CountDownTime also. It seems to
work fine
(even when the Screen goes off).
I took the following from the web:
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long
countDownInterval) {
super(millisInFuture, countDownInterval);
}
public void onFinish() {
counter = new MyCount(5000, 1000);
counter.start ();
}
public void onTick(long millisUntilFinished) {
tv.setText(Hal: + timer.getTime());
}
}
The timer component uses a Live Jt component (separate
thread):
private void timer() {
JtFactory main = new JtFactory ();
// Create the component
timer = (Timer) main.createObject (Timer.JtCLASS_NAME);
// Asynchronous processing of messages.
main.setSynchronous(false);
main.sendMessage (timer, new JtMessage
(Timer.UPDATE_TIME));
}
.
counter = new MyCount(5000, 1000);
counter.start();
setContentView(tv);
...
On Nov 20, 3:58 pm, Paul Townsend deer...@gmail.com
mailto:deer...@gmail.com wrote:
I made a simple countdown timer and it works as expected
when plugged
in via usb for debugging but when I take it off
debugging and the
screen goes off either time out or power button the
handler fails to
fire at the end time. I have created a custom timer
class that gets
created from the main activity when needed, because its
able to have
multiple countdowns running at the same time. Am I right
in thinking
that the handler just gets paused when the screen goes
off and if so
what are my alternatives. The activity is still in the
foreground and
I assumed the handler would still fire if the screen
goes off.
--
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Re: [android-developers] Re: Handler.postDelayed not working when screen goes off
:) this programing lark is fun isn't it, I will try the alarm thing next :). On 28 Nov 2010 17:32, Kostya Vasilyev kmans...@gmail.com wrote: -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Handler.postDelayed not working when screen goes off
Just tried that bvut dose the same thing, although I have used
countdownTimer in a custom TextView that I wrote so I could have a countdown
timer for the UI and this dose not pause. I might look into to transfering
the other timer bits to the text view and use that as a all in one timer
solution and see if that works.
On 21 November 2010 03:34, Hal dsheppar...@gmail.com wrote:
You may want to look at CountDownTime also. It seems to work fine
(even when the Screen goes off).
I took the following from the web:
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
public void onFinish() {
counter = new MyCount(5000, 1000);
counter.start ();
}
public void onTick(long millisUntilFinished) {
tv.setText(Hal: + timer.getTime());
}
}
The timer component uses a Live Jt component (separate thread):
private void timer() {
JtFactory main = new JtFactory ();
// Create the component
timer = (Timer) main.createObject (Timer.JtCLASS_NAME);
// Asynchronous processing of messages.
main.setSynchronous(false);
main.sendMessage (timer, new JtMessage (Timer.UPDATE_TIME));
}
.
counter = new MyCount(5000, 1000);
counter.start();
setContentView(tv);
...
On Nov 20, 3:58 pm, Paul Townsend deer...@gmail.com wrote:
I made a simple countdown timer and it works as expected when plugged
in via usb for debugging but when I take it off debugging and the
screen goes off either time out or power button the handler fails to
fire at the end time. I have created a custom timer class that gets
created from the main activity when needed, because its able to have
multiple countdowns running at the same time. Am I right in thinking
that the handler just gets paused when the screen goes off and if so
what are my alternatives. The activity is still in the foreground and
I assumed the handler would still fire if the screen goes off.
--
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To post to this group, send email to android-developers@googlegroups.com
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android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com
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For more options, visit this group at
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Re: [android-developers] Re: Handler.postDelayed not working when screen goes off
You don't need to try around with different things, the behavior is very
well defined: if you are not holding a wake lock, the CPU is allowed to go
to full sleep, so no code can be executed until an external event wakes it
up. A thread sitting there waiting on a timer is never an external event.
If you need to make sure you wake up even if the CPU is asleep, use the
AlarmManager.
On Sun, Nov 21, 2010 at 8:21 AM, Paul Townsend deer...@gmail.com wrote:
Just tried that bvut dose the same thing, although I have used
countdownTimer in a custom TextView that I wrote so I could have a countdown
timer for the UI and this dose not pause. I might look into to transfering
the other timer bits to the text view and use that as a all in one timer
solution and see if that works.
On 21 November 2010 03:34, Hal dsheppar...@gmail.com wrote:
You may want to look at CountDownTime also. It seems to work fine
(even when the Screen goes off).
I took the following from the web:
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
public void onFinish() {
counter = new MyCount(5000, 1000);
counter.start ();
}
public void onTick(long millisUntilFinished) {
tv.setText(Hal: + timer.getTime());
}
}
The timer component uses a Live Jt component (separate thread):
private void timer() {
JtFactory main = new JtFactory ();
// Create the component
timer = (Timer) main.createObject (Timer.JtCLASS_NAME);
// Asynchronous processing of messages.
main.setSynchronous(false);
main.sendMessage (timer, new JtMessage (Timer.UPDATE_TIME));
}
.
counter = new MyCount(5000, 1000);
counter.start();
setContentView(tv);
...
On Nov 20, 3:58 pm, Paul Townsend deer...@gmail.com wrote:
I made a simple countdown timer and it works as expected when plugged
in via usb for debugging but when I take it off debugging and the
screen goes off either time out or power button the handler fails to
fire at the end time. I have created a custom timer class that gets
created from the main activity when needed, because its able to have
multiple countdowns running at the same time. Am I right in thinking
that the handler just gets paused when the screen goes off and if so
what are my alternatives. The activity is still in the foreground and
I assumed the handler would still fire if the screen goes off.
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com
For more options, visit this group at
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android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com
For more options, visit this group at
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--
Dianne Hackborn
Android framework engineer
hack...@android.com
Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails. All such
questions should be posted on public forums, where I and others can see and
answer them.
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Handler.postDelayed not working when screen goes off
You may want to look at CountDownTime also. It seems to work fine
(even when the Screen goes off).
I took the following from the web:
public class MyCount extends CountDownTimer {
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
public void onFinish() {
counter = new MyCount(5000, 1000);
counter.start ();
}
public void onTick(long millisUntilFinished) {
tv.setText(Hal: + timer.getTime());
}
}
The timer component uses a Live Jt component (separate thread):
private void timer() {
JtFactory main = new JtFactory ();
// Create the component
timer = (Timer) main.createObject (Timer.JtCLASS_NAME);
// Asynchronous processing of messages.
main.setSynchronous(false);
main.sendMessage (timer, new JtMessage (Timer.UPDATE_TIME));
}
.
counter = new MyCount(5000, 1000);
counter.start();
setContentView(tv);
...
On Nov 20, 3:58 pm, Paul Townsend deer...@gmail.com wrote:
I made a simple countdown timer and it works as expected when plugged
in via usb for debugging but when I take it off debugging and the
screen goes off either time out or power button the handler fails to
fire at the end time. I have created a custom timer class that gets
created from the main activity when needed, because its able to have
multiple countdowns running at the same time. Am I right in thinking
that the handler just gets paused when the screen goes off and if so
what are my alternatives. The activity is still in the foreground and
I assumed the handler would still fire if the screen goes off.
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
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