Android Question Taking photos 2020

[udg]

Hi all,
as a follow up on this thread, I'd like to understand which is the preferred way to take a photo nowadays.
Would you still use the Camera Intent or switch to CameraEx (or Camera2 depending on Android version)?
I used the former in an old project of mine and I'm aware that I've to update it in order to use FileProvider, but, eventually, interacting directly with the camera is nowadays the preferred method?

BTW, I will have to search on how to take photos on iOS too (but let's have a functioning Android app first).

To better focus on my specific goal: I expect pictures taken out of paper documents being A5, A4 or even larger in size. That means good resolution but non so many colors (I hope..ehehe).

Once a "good" photo is taken, I'll use techniques from the linked thread to keep the file size to a minimum and upload it to a remote server.

udg

 

[Alexander Stolte]

camera2 is the best choice and as erel said in this thread, the minimum sdk is sufficient 2020.

which minimum sdk 2020?

Target SDK = 28 is clear, but what minimum SDK should you specify for the playstore in 2020? Greetings

www.b4x.com

But I personally still use cameraEx in my apps because it just works.
I have some mods on the class:
To get the best preview size

CameraEx - Preview in full screen and aspect ratio

I've seen some code posted about keeping the aspect ratio of the preview panel using the CameraEx class, all that is fine, but, what I'm trying to achieve is to have the same effect in FULL SCREEN just like the native camera app and I cannot find a solution, it looks "stretched" and distorted...

www.b4x.com

And i use the "PreviewImageToJpeg" Function to make a image from the camera, because the quality of the image is better.

How to save Preview picture in CamEx

I think this is probably easy but I cannot find an example. In the CameraEx class there is a function called PreviewImageToJpeg(data() as byte, quality as Int) as Byte() The first parameter (data as byte array) refers to the camera preview image formatted in YUV. My code would be something...

www.b4x.com

 

[Alexander Stolte]

here are some pictures i took, where i tested the quality, the file size is the same i uploaded to the server, you see ~200kb or less.
The pictures were taken with the CameraEx class together with the 2 mods I explained above. I reduced the file size of the pictures as described here:

[solved] Photo image file size

Hi all, please refresh my surely outdated knowledge about the subject. I'd like to let a B4A/B4i app takes up a photo (using whatever resolution the device is set to), reduce its resulting file size to a minimum (keeping the best quality possible) and finally upload it to a server of mine. On a...

www.b4x.com

The pictures were created on my Oneplus 6.

 

[udg]

Hi Alexander, thank you for your constant support.
When my app will be ready I should consider that it will be 50% yours..

Now I'm gonna pause it for a short time since I'm signaled that the stuff I ordered to use with B4R it's just arrived.. I feel like a baby ready to unpack his new toys!

?