Android Question SLEEP on B4A 6.5

[Star-Dust]

Is it possible to use sleep commands with B4A 6.5?

I saw following a @Erel thread that used this code to intercept errors in the servicer Starter (Application_Error)

Dim jo As JavaObject
Dim l As Long = 500
jo.InitializeStatic("java.lang.Thread").RunMethod("sleep", Array(l))

Does it correspond to B4A 7 sleep?

 

[DonManfred]

Is it possible to use wait and sleep commands with B4A 6.5?

No.

 

[Star-Dust]

Short but eloquent answer
Thank's

 

[Erel]

java.lang.Thread.sleep = Pauses the current thread for x milliseconds.

New Sleep keyword = Saves the current sub state and returns. The sub will be resumed after x milliseconds.

 

[Star-Dust]

Many thanks, now I understand the difference.

To create pauses, I could use java.lang.Thread.sleep instead of DoEvents in B4A 6.5 so I can be compatible with B4A 7 (where DoEvents is deprecated)?

 

[DonManfred]

DoEvents is still there (in V7) but it creates a warning now

 

[LucaMs]

Sleep (the "original one") and DoEvents are not the same thing, completely different.

You should use the deprecated DoEvents inside a loop to allow the refresh of the GUI.

 

[Star-Dust]

I know I'm not the same. In my code use DoEvents to create pauses (Type Delay (500)). I would avoid DoEvents because it was deprecated in version 7, so the code could be used by both versions. So java.lang.Thread.sleep could do my job

 

[LucaMs]

I would avoid DoEvents because it was deprecated in version 7

It is deprecated (by Erel) from version 0.00 , not now only.

The pauses you created are loops, right? And inside them you use DoEvents. java.lang.Thread.sleep does not allow you to use DoEvents, it is a single line of code.

 

[Star-Dust]

Reading the posts of @Erel where it explains the resume sub, I understand the commands of Sleep and Wait for version 7. Before I knew their functions well. Certainly for me that I started to use in Turbo Pascal a concept is a bit difficult to digest

 

[Star-Dust]

I wanted to replace this

Sub Delay(Time as int)
  Dim Now as Long = DateTime.Now

  while Datetime.Now<=Now+Time
  DoEvents
  Loop

End Sub

With

Sub Delay(Time as Long)
  Dim jo As JavaObject
  jo.InitializeStatic("java.lang.Thread").RunMethod("sleep", Array(Time))
End Sub

 

[Erel]

What are you using this Delay for?

You can probably switch to CallSubPlus. This is a better solution.

 

[Star-Dust]

What are you using this Delay for?

You can probably switch to CallSubPlus. This is a better solution.

Ok, Thank's. Try it

 

[Star-Dust]

Sorry again, probably is a stupid question, but I need to understand it well.
Can not get a similar result with Threading Library?

https://www.b4x.com/android/help/threading.html#lock_waitfor

Example: https://www.b4x.com/android/forum/threads/threading-library.6775/#content

 

[Erel]

Can not get a similar result with Threading Library?

No. Resumable subs don't use any background threads.

 

[Star-Dust]

No. Resumable subs doesn't use any background threads.

Still thanks and sorry the many questions