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Extensions
#42

I’m a teacher, I have a project to make an online exam, I need the camera to secretly take a photo of my participant and upload the photo directly to my google drive

1 Like
#43

That’s awesome :grin:

Why don’t you use the normal camera of the App to record the video directly? Or like screen record? That would be nice than storing hundreds of photos which is not an efficient way. You could record the video directly then convert to images…

#44

Oh God, why didn’t I think of that, that’s a great idea !

The extension available front camera?

I’ll try… Thank you so much

1 Like
#45

Yes, my extension can switch between the front and the back camera.

Well, we students make more mistakes than teachers.
:grin:

Have a nice day!

#46

:grin: yeah

can you give me example some blocks from your extension after “take a picture” and then automatically upload to google drive ?

have a nice day too

#47

You can use these blocks to take a picture, I do not know much about uploading to google drive :sweat_smile:

This is my old blog with the AIA to upload images, you may get an idea from it (I’m using a free extension) but it’s said it no longer works.

#48

Thanks for a great extension. On both my devices, a Google pixel 3a and a OnePlus 7T both Android 11, I had to manually go into settings and allow the permissions for the camera and storage before it worked. I am using your example code. Also on both my devices the type-front displays the rear camera and the type-rear displays the front camera.

I would like to do a CCTV type app that sends low-quality video from one phone to another via my local LAN. I did an app like this years ago, but it uses the original camera library which is no longer supported.

Is there a way to get a bitmap or JPEG preview image from the frame (vertical layout) into a byte array variable that can be sent over the network to another device?

Thanks.

#49

Yes, this is possible to be done. You can use any extension (other) which will return the byte values in a list that you can send over networks. But it may lag a bit because the list size will be too high.

#50

Thanks for your reply.

I’m not super knowledgeable in using App Inventor. Do you know what code (blocks) would be used in order to read the byte data from the frame (vertical arrangement)?

I agree it would lag terribly if I used the full-sized preview image from the camera. What I did previously was I was able to reduce the preview image size to, for example, 640x480. This was using the original camera library. From what I can tell the camera2 library will use the frame size to reduce the size of the preview image – so if I set the vertical arrangement frame size to 640x480 hopefully it will reduce the preview image size (this is all just a guess).

Thanks.

#51

You should ask the questions in the community of the builder you use. Builders are much to different. The developer of the extension is also present in that community.

#52

Nice extension @Xoma, Keep :kodular:oding

#53

how can i get captureButton.click event

#54

There is no capture button. You have two blocks that are TakePicture and TakePreviewPicture.

#55

Hi Xoma, awesome extension, keep coding!
By the way, is possible to add an event for motion capture?
Greetings from Buenos Aires, Argentina.
David

#56

Hi, sorry, I don’t know if it is possible.

#57

Can there be modes for photography like landscape and potrait?
Because currently all pictures I take are being saved in landscape while I click them in Vertical.

#58

I don’t know if there is a correct solution.
It’s a bug in the extension in some devices, it gets rotated or inversed.

You may need to use the take preview pic block that will only capture what the user is seeing in the arrangement.

#59

Is it in the extension or library used here?

#60

The extension does not uses any library.

#61

I meant Camera 2 Api