Android Question reading android system settings ?

[aeropic]

Hi all,

I'm very new to B4A and this forum, please forgive me if my questions are not really accurate.

I'm trying to develop a kind of "don't lock screen" widget that will turn ON the screen for a very short period just before the lock-screen time out triggers and force the phone to sleep.

The first proto is working fine but I have to set the delay after screen off manually and to make it more user friendly, I would need to read from an internal system variable the setting value of lock-screen time out. (there is a screen_off time out, then a lock-screen time out. I need to read the second one !!!)

I've searched everywhere on the forum and could not find a way to do this.

Thanks for your advices !
Alain

 

[Erel]

Try: Phone.GetSettings("screen_off_timeout")

 

[aeropic]

Try: Phone.GetSettings("screen_off_timeout")

Thank you Erel for your fast answer.
I tried it. It works fine to get the screen_off time out. It returns indeed the number of ticks for instance if accessibility/delay to turn off screen is set to 2 min, I get 120000...

But I need to read the other time-out (accessibility/automatically lock (screen will be locked within 3 minutes after its automatic desactivation) <== translation from french sorry !

In fact, on my galaxy S3, screen_off_timeout + lock_screen_timeout <= 5 minutes. if I set the screen_off to 2 minutes, I can only set Lock_screen to maximum 3 minutes.
It is this value of 3 minutes I would want to programatically read...

 

[Erel]

The list of settings is available here: http://developer.android.com/reference/android/provider/Settings.System.html
Note sure that the one you are looking for is available.

 

[aeropic]

Humm, I'm afraid you're right Erel, I don't see any setting looking like: lock_screen or sleep something ...

but meanwhile, I gave a try to the administrator library...
This is great: I managed to have access to admin priviledge and, as a test, succeeded to lock the screen.

I've seen there is a way to program the MaximumTimeToLock, but this constant is write only in the admin library...
However, I found this on https://gitorious.org/android-enabl...droid/app/admin/DevicePolicyManager.java#L488

It looks like a new member could be added in the library to getMaximumTimeToLock without modifying it ... but this is far from my skills

• public void setMaximumTimeToLock(ComponentName admin, long timeMs) {

• if (mService != null) {

• try {

• mService.setMaximumTimeToLock(admin, timeMs);

• } catch (RemoteException e) {

• Log.w(TAG, "Failed talking with device policy service", e);

• }

• }

• }

• /**

• * Retrieve the current maximum time to unlock for all admins

• * or a particular one.

• * @param admin The name of the admin component to check, or null to aggregate

• * all admins.

• */

• public long getMaximumTimeToLock(ComponentName admin) {

• if (mService != null) {

• try {

• return mService.getMaximumTimeToLock(admin);

• } catch (RemoteException e) {

• Log.w(TAG, "Failed talking with device policy service", e);

• }

• }

• return 0;

• }

 

[aeropic]

I've discovered the concept of reflection, but I must admit it is a little bit complex for me !

Would there be a way to encapsulate the GetMaximumTimeLock inside a reflector ?

 

[Erel]

getMaximumTimeToLock will not help. It returns the maximum time allowed for the lock screen setting based on the activated admin managers.

It doesn't return the actual time to lock value.

 

[aeropic]

Hi Erel,
Associated with screen off time out, I would get the range of values from 0 to maxtimetolock - screenOff...

But nevertheless, You're right it does not return the time to lock ! As the user is allowed to modify it, it should be stored somewhere, should'nt it ?