Android Question how to avoid using the doevents

[LordZenzo]

if I have to use more commands like that
mMano.SetLayoutAnimated (MDURATION, x, y, mMano.Width, mMano.Height)
to create a complex animation you only see the last command
if I insert a sleep (0) the animations are reduced to some flashes in the beginning positions, except the last one

 

[Erel]

You should post the relevant code.

 

[Star-Dust]

mMano.SetLayoutAnimated (MDURATION_Animation_1, x, y, mMano.Width, mMano.Height)
Sleep(MDURATUON_Animation_1)
mMano.SetLayoutAnimated (MDURATION_Animation_2, x, y, mMano.Width, mMano.Height)
Sleep(MDURATUON_Animation_2)
mMano.SetLayoutAnimated (MDURATION_Final, x, y, mMano.Width, mMano.Height)
Sleep(MDURATUON_Final)

Please note that sometimes the SetLayoutAnimation animations do not seem to start right away, and the Sleep of the same duration does not seem to be enough to make the animation visible.
I would also add a 100 or 200 milliseconds more

 

[LordZenzo]

unfortunately it does not work because the code is not exactly like that,
the animation is set inside a sub called by another sub
and sleep causes the diver to exit immediately
the example closest to my code is this

public sub test
      Animation (2000,100,100)
      Animation (2000,300,200)
      ......
end sub
private sub Animation (duration as long, X as int, Y as int)
      mMano.setLayountAnimatio (duration, X, Y, mMano.width, mMano.heigth)
end sub

due to the complexity of the calling code, inserting sleep is not "simple" because the Animation sub is inserted in what will be a library

 

[LordZenzo]

I thought about entering this code

MT1 = DateTime.Now
Do Until (DateTime.Now-mT1)> k (1)
mMano.Invalidate
Loop

but the B4XView object does not have Invalidate

 

[Erel]

MT1 = DateTime.Now
Do Until (DateTime.Now-mT1)> k (1)
mMano.Invalidate
Loop

Sorry to say but it is a very bad code and should never be used.

You need to learn how to use resumable subs that return value. Watch the resumable subs video tutorial: https://www.b4x.com/etp.html

Simple solution:

public sub test
      Animation (2000,100,100)
      Sleep(2000)
      Animation (2000,300,200)
      Sleep(200)
      ......
end sub
private sub Animation (duration as long, X as int, Y as int)
      mMano.setLayountAnimatio (duration, X, Y, mMano.width, mMano.heigth)
end sub

If you want to sleep inside the Animation sub:

public sub test
      Wait For (Animation (2000,100,100)) Complete (Unused As Boolean)
      Wait For (Animation (2000,200,300)) Complete (Unused As Boolean)

      ......
end sub
private sub Animation (duration as long, X as int, Y as int) As ResumableSub
      mMano.setLayountAnimatio (duration, X, Y, mMano.width, mMano.heigth)
      Sleep(Duration)
      Return True
end sub

 

[OliverA]

Note: @Erel's 2nd example left out the sleep inside the Animation sub (mentions it, just left it out)

public sub test
      Wait For (Animation (2000,100,100)) Complete (Unused As Boolean)
      Wait For (Animation (2000,200,300)) Complete (Unused As Boolean)

      ......
end sub
private sub Animation (duration as long, X as int, Y as int) As ResumableSub
      mMano.setLayountAnimatio (duration, X, Y, mMano.width, mMano.heigth)
      Sleep(200)
      Return True
end sub

 

[Jeffrey Cameron]

Sleep(200)

Shouldn't that be

Sleep(duration)

?

 

[OliverA]

Shouldn't that be

I don't think so. That duration is for the setLayoutAnimated method.

 

[LordZenzo]

Sorry to say but it is a very bad code and should never be used.

You need to learn how to use resumable subs that return value. Watch the resumable subs video tutorial: https://www.b4x.com/etp.html

Simple solution:

public sub test
      Animation (2000,100,100)
      Sleep(2000)
      Animation (2000,300,200)
      Sleep(200)
      ......
end sub
private sub Animation (duration as long, X as int, Y as int)
      mMano.setLayountAnimatio (duration, X, Y, mMano.width, mMano.heigth)
end sub

If you want to sleep inside the Animation sub:

public sub test
      Wait For (Animation (2000,100,100)) Complete (Unused As Boolean)
      Wait For (Animation (2000,200,300)) Complete (Unused As Boolean)

      ......
end sub
private sub Animation (duration as long, X as int, Y as int) As ResumableSub
      mMano.setLayountAnimatio (duration, X, Y, mMano.width, mMano.heigth)
      Return True
end sub

it does not work because the setLayountAnimated is asynchronous

 

[Erel]

OliverA is of course correct. I forgot to add the Sleep(something here based on your requirements) into the Animation sub.

 

[OliverA]

Shouldn't that be

I don't think so. That duration is for the setLayoutAnimated method.

Looking at post #3, looks like duration should also be used for sleep?

it does not work because the setLayountAnimated is asynchronous

And?

 

[LordZenzo]

Looking at post #3, looks like duration should also be used for sleep?

And?

and then move on to the next commands before the end of the animation creating a problem of continuity of the animation itself

 

[MarkusR]

how about using a timer and a list with this type (object,left,top,width,height)
and using .SetLayout at a tick event and remove the entry from list.
https://en.wikipedia.org/wiki/Linear_interpolation

 

[LordZenzo]

the problem is always the same
sleep returns control to the flow of commands
I need only the "drawing" to be updated in the positions of the animation without the flow passing to the control that sets the successive animations

 

[LordZenzo]

how about using a timer and a list with this type (object,left,top,width,height)
and using .SetLayout at a tick event and remove the entry from list.
https://en.wikipedia.org/wiki/Linear_interpolation

I wanted to avoid it but it seems the only solution
this is an example of how DoEvents' deprecation makes things much more complicated

 

[OliverA]

the problem is always the same
sleep returns control to the flow of commands

That's why you use Wait For. You may need to use multiple levels of Wait For, but that's what you need to use.

If test is called from another location in your app, you need to make test resumable also and wait for it where it is called.

 

[LordZenzo]

That's why you use Wait For. You may need to use multiple levels of Wait For, but that's what you need to use.

If test is called from another location in your app, you need to make test resumable also and wait for it where it is called.

no, the position test with the LayountAnimated does not work

 

[MarkusR]

DoEvents' deprecation

i don't think it belongs doevents
sleep(0) = doevents

i think your need is a animation list which not exists as feature.

 

[OliverA]

the position test with the LayountAnimated does not work

How about showing all the code. From the code that calls test. From the code that calls the code that calls test. etc. Test and the animations.