Android Question Share App-View

[Deleted member 103]

Hi,

I share the appearance of my app with a second device, I use the example "MJPEG / CCTV Server" of Erel.
But not the camera is used, as in the example, but I send with a timer a few screenshot per second.
My question is: is there a better solution or is my approach right?

Private Sub mirrorTimer_Tick
    'Log("mirrorTimer_Tick")
    Dim jpeg() As Byte = ConvertBitmapToByte(TakeScreenshot)
    Starter.smanager.NewBitmap(jpeg)
End Sub

Private Sub TakeScreenshot As Bitmap
    Dim jo As JavaObject
    jo.InitializeContext
    Dim decor As JavaObject = jo.RunMethodJO("getWindow", Null).RunMethod("getDecorView", Null)
    Dim decorChild As JavaObject = decor.RunMethod("getChildAt", Array(0))
    decorChild.RunMethod("setDrawingCacheEnabled", Array(True))
    decorChild.RunMethod("buildDrawingCache", Null)
    Dim bmp As Bitmap = decorChild.RunMethod("getDrawingCache", Array(True))
    bmp.Initialize3(bmp)
    decorChild.RunMethod("setDrawingCacheEnabled", Array(False))
    Return bmp
End Sub

Private Sub ConvertBitmapToByte(foto As Bitmap) As Byte()
    'convert the image file to a bytes array
    Dim OutputStream1 As OutputStream
    OutputStream1.InitializeToBytesArray(1000)
    'Dim InputStream1 As InputStream
    foto.WriteToStream(OutputStream1,70,"JPEG")
    Dim Buffer() As Byte 'declares an empty array
    Buffer = OutputStream1.ToBytesArray
    Return Buffer
End Sub

 

[Erel]

This is a good solution when low FPS (frames per second) is enough.

You might get better results with a solution based on: https://www.b4x.com/android/forum/threads/b4a-screenrecorder-screenshots.71348/#content

 

[Deleted member 103]

This is a good solution when low FPS (frames per second) is enough.

You might get better results with a solution based on: https://www.b4x.com/android/forum/threads/b4a-screenrecorder-screenshots.71348/#content

Thanks Erel, but I think my solution is OK for my needs.

 

[Deleted member 103]

This is a good solution when low FPS (frames per second) is enough.

You might get better results with a solution based on: https://www.b4x.com/android/forum/threads/b4a-screenrecorder-screenshots.71348/#content

I'm sorry Erel, but my solution is not so good, the app gets very sluggish over time.
I looked at your suggestion, but I do not really understand the way it works.
Do you have a tip for me?

 

[Erel]

I never worked with the ScreenRecorder library.

the app gets very sluggish over time.

This can probably be fixed.

Try to take the screenshot with this code:

Dim x As B4XView = Activity
Dim bmp As Bitmap = x.Snapshot.Resize(600, 600, True)

 

[Deleted member 103]

I never worked with the ScreenRecorder library.


This can probably be fixed.

Try to take the screenshot with this code:

Dim x As B4XView = Activity
Dim bmp As Bitmap = x.Snapshot.Resize(600, 600, True)

Thanks Erel, I'll try it.

 

[Deleted member 103]

Hi Erel,

I tried the new feature, it's really great!

You could have said that to me earlier.

No, joking aside, many thanks.

 

[Deleted member 103]

Hi Erel,

I have tried the same code for B4i, unfortunately it does not have the same performance in B4i as in B4a.
Is there anything better for B4i?

Private Sub TakeScreenshot As Bitmap
    Dim x As B4XView = pMain.RootPanel
    Return x.Snapshot.Resize(600, 600, True)
End Sub

 

[ilan]

Hi Erel,

I have tried the same code for B4i, unfortunately it does not have the same performance in B4i as in B4a.
Is there anything better for B4i?

Private Sub TakeScreenshot As Bitmap
    Dim x As B4XView = pMain.RootPanel
    Return x.Snapshot.Resize(600, 600, True)
End Sub

have a look at this:

https://www.b4x.com/android/forum/threads/geting-screenshot.52826/#post-330923

(btw it is better to ask b4i question in the b4i section )

 

[Erel]

Please start a new thread for this in B4i forum.

 

[Deleted member 103]

have a look at this:

https://www.b4x.com/android/forum/threads/geting-screenshot.52826/#post-330923

(btw it is better to ask b4i question in the b4i section )

Thanks ilan, but I already know that.

For B4i it continues here ...