Putting android to sleep

[JakeBullet70]

I have been trying to put android asleep grammatically.

I have tried:

Dim p As Phone, n As Float = 0
p.SetScreenBrightness(n)

This does seem to work but my app has problems restarting after this. Is there another way to do this?

 

[Erel]

Which problem did you encounter later?

 

[JakeBullet70]

If I put the app asleep with the power button or wait for the android to put it asleep all is well, When I press the power button or a timer fires my app comes back fine.

If I use the code above to put it asleep.
The 1st time I press the power button nothing happens.
2nd time the screen powers up but displays nothing.
3rd time it goes blank again.
4th time most of my app comes back but some of the screen is not displayed.

Has to be something different between me putting it asleep and the system doing it.

 

[Erel]

Try to set the value to 0.1.

 

[JakeBullet70]

0.1 just dims the screen and when I press the power button it goes to sleep.

I am going to create a small project, pull out the code and see if I can reproduce it in a small program.

I did notice one other thing. When I press the power button to try and wake it up the 'Activity_Pause' keeps firing, I think thats why my app is having problems waking up.

 

[JakeBullet70]

Here is a small sample that shows the problem.
Fails on both my phone and tablet.


Be careful with this program, it can lock you device up so that it needs to be re-started

 

[Erel]

I tested it on a Nexus 4 and it works as expected. Note that the screen is not dimmed completely. There is a minimum brightness level. From what you are writing it seems that some devices do not handle a brightness level of 0 properly.

 

[intera]

Hi JakeBullet70 so far the only posibility I found was this....

http://www.b4x.com/android/forum/threads/reflection-library.6767/page-6#post-181521

but as says on th thread there is 2-3 sec delay....
if you find any better let me know please!!!!

PS:I am looking for the gotosleep function of powermanager but it does not work unless you made it a system app....forget it