Android Question Timer to set alarm for X seconds

tsteward · Feb 18, 2017

I'm trying to write a timer where the user will select X minutes.
I have a display and also a service running in case the screen is off.
But the service does not fire at exactly 60 seconds if the user selected 1 minute.

What am I doing wrong please?

Erel · Feb 19, 2017

Is the timer accurate?

A more accurate version of StartServiceAt: https://www.b4x.com/android/forum/t...estartatexact-not-accurate.65117/#post-412286

tsteward · Feb 19, 2017

Thank you Erel that fixed the problem

Mahares · Feb 19, 2017

Erel said:
A more accurate version of StartServiceAt:

tsteward said:
Thank you Erel that fixed the problem

I tested your example using each of these 3 nuances using a time of 1 minute and did not see any difference between the three. All seem to work properly. The first number you see after the timer starts is of course 58 seconds.

B4X:

StartServiceAt(alarm, targetTime, True)
    StartServiceAtExact(alarm, targetTime, True)
    SetExactAndAllowWhileIdle (targetTime, "alarm")

What did you see that I could not see/

Erel · Feb 19, 2017

The difference in "the more accurate version" is only relevant to Android 6+ and it is also possible that you will not see any difference. It prevents the OS from changing the scheduled time to preserve battery power.

tsteward · Feb 19, 2017

Mahares said:
I tested your example using each of these 3 nuances using a time of 1 minute and did not see any difference between the three. All seem to work properly. The first number you see after the timer starts is of course 58 seconds.

B4X:

StartServiceAt(alarm, targetTime, True) StartServiceAtExact(alarm, targetTime, True) SetExactAndAllowWhileIdle (targetTime, "alarm")

What did you see that I could not see/

The timer on the screen ran just fine but the service that would sound the alarm was inconsistent.
About 10% of the time it would fire on time but the other 90% of the time it was 10, 14, 38 etc seconds late.

Using SetExactAndAllowWhileIdle (targetTime, "alarm") it now fires on time, every time on my LG G4 android 6.0

Android Question Timer to set alarm for X seconds

tsteward

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Erel

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tsteward

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Mahares

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Android Question Timer to set alarm for X seconds

tsteward

Well-Known Member

Attachments

Erel

B4X founder

tsteward

Well-Known Member

Mahares

Expert

Erel

B4X founder

tsteward

Well-Known Member

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