Help with PartialLock

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Mar 16, 2011

• #2

Are you sure you need a lock for this?
Can you describe your application a little bit?

 

Upvote 0

S

solas

Member

Licensed User

Longtime User

• Mar 16, 2011

• #3

Hi Erel I'm not sure of anything, I'm just trying to get the hang of all the features of B4A and I am using this as a learning exercise. The syntax layout for PartialLock has me stumped (I cant find an example for it ) basically I want to run an app that is always on the screen but with the power drain minimized,the screen could shut down until woken by the Accelerometer. Once I have managed this my next exercise will be to try to shift as much code as I can to service modules PS I realize that this is posted in the wrong room and if you want to shift the thread to a more appropriate room that's fine sorry about the hassle
rgs Solas

 

Upvote 0

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Mar 18, 2011

• #4

There is not much syntax.

B4X:

    Dim wakelock As PhoneWakeState 'declare in Sub Process_Globals
    wakelock.PartialLock 'acquire the lock
    ....
    'Release it when it is no longer needed
    wakelock.ReleasePartialLock

 

Upvote 0

S

solas

Member

Licensed User

Longtime User

• Mar 21, 2011

• #5

Thanks

Thanks Erel that was exactly what i needed

 

Upvote 0

rfresh

Well-Known Member

Licensed User

Longtime User

• Apr 23, 2012

• #6

@solas

What does the partial lock do? Just turn off the screen but keep the app alive?

And then ReleasePartialLock will bring it "back to life"?

 

Upvote 0

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Apr 23, 2012

• #7

Partial lock forces the CPU to keep running. It does nothing with the screen.

 

Upvote 0

rfresh

Well-Known Member

Licensed User

Longtime User

• Apr 23, 2012

• #8

And that prevents your device from going to sleep or prevents the screen from dimming? In other words, it keeps your device active?

 

Upvote 0

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Apr 24, 2012

• #9

It prevents the CPU from going to sleep. It doesn't affect the screen in anyway. The screen will eventually turn off.

 

Upvote 0

mc73

Well-Known Member

Licensed User

Longtime User

• Jul 15, 2012

• #10

A partialLock, since leaving CPU to continue working, would prevent WIFI from turning off, in case of course we've already set this property to 'never'?

 

Upvote 0

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Jul 16, 2012

• #11

The Android documentation only refers to the CPU. It is not clear whether Wifi will stay on or not.

 

Upvote 0

mc73

Well-Known Member

Licensed User

Longtime User

• Jul 16, 2012

• #12

Erel said:

The Android documentation only refers to the CPU. It is not clear whether Wifi will stay on or not.

Click to expand...

I suspect it's not for keeping WIFI alive

 

Upvote 0

boten

Active Member

Licensed User

Longtime User

• Aug 18, 2012

• #13

Erel said:

Partial lock forces the CPU to keep running. It does nothing with the screen.

Click to expand...

but once the user presses the power button slightly, the CPU might still be working but your app is paused, thus you can't use any timer event you set. e.g: vibrate the phone every "so much" seconds, even when the user locked the screen by the power button.

 

Upvote 0

mc73

Well-Known Member

Licensed User

Longtime User

• Aug 18, 2012

• #14

boten said:

but once the user presses the power button slightly, the CPU might still be working but your app is paused, thus you can't use any timer event you set. e.g: vibrate the phone every "so much" seconds, even when the user locked the screen by the power button.

Click to expand...

I think that you can always use a service module for such purposes.

 

Upvote 0