Android Question Problem cropping image with large resolution size

[PumaCyan]

I apply take a photo from gallery then crop it

i use method and library from this : xResizeAndCrop

but there is a problem when the image size is large..
how to solve this?

 

[klaus]

What size is your image ?
I tested with an image of 6000 / 4000 pixels on my Samsung Galaxy S10 and it works.

 

[PumaCyan]

What size is your image ?
I tested with an image of 6000 / 4000 pixels on my Samsung Galaxy S10 and it works.

4,70 MB
6528 x 4896

 

[DonManfred]

4,70 MB
6528 x 4896

Based on the error (which you should ALWAYS post as TEXT as it its text!) you are requesting a bitmap size of 172mb.

 

[LucaMs]

Based on the error (which you should ALWAYS post as TEXT as it its text!) you are requesting a bitmap size of 172mb.

Since this could happen even with less "heavy" images, if the smartphone memory is not enough, I suppose that some types of operations should be written inside a Try-End Try block (otherwise it would be necessary to detect the available memory and the maximum allowed by the operation which, if I'm not mistaken, concerns the canvases, not the normal loading in an ImageView)

 

[agraham]

The canvas size limitation varies with the Android version. Displaying large images has been a problem so I created ScaleImageView

ScaleImageView - Pan and zoom large images

My main reason to restart using B4A was to implement on a mobile device my mapping program which covers the entire UK at various scales and requires the ability to display large map images at a specified zoom level and centered on a specified coordinate and then allow the user to drag and zoom...

www.b4x.com

Erel created a cross platform HugeImageView

[B4X] HugeImageView - show very large images

Q: I want to load a 10,000 x 10,000 image? A: That's impossible!!! The memory required is: width * height * 4 = 400MB. A: You will need to scale down the image. A: Sure. Use HugeImageView: (image source: https://images4.alphacoders.com/655/655004.jpg) How does it work? It uses two layers -...

www.b4x.com

LoadBitmapResize will let you load a reduced size image but I don't know of a way to crop a large image at the full resolution.

 

[PumaCyan]

thanks to everyone who helped answer...
currently, the solution I can use is to use LoadBitmapResize, and it works fine...

 

[klaus]

As you already want to do, you can load the image with:

xResizeAndCrop1.Image = xui.LoadBitmapResize(ImageDir, ImageFileName, 2000, 2000, True)

Do not use:

xResizeAndCrop1.LoadImage(ImageDir, ImageFileName)

 

[kimstudio]

It is interesting to know whether the error only happens at loading or at drawing. If it could be loaded then it is possible to draw part of the image and crop box on the limited size canvas and crop image in memory without losing image quality due to loadresize, or loadresize and draw fullscreen image then remap back cropbox to real size and crop in memory.

 

[agraham]

As you already want to do, you can load the image with: ... LoadBitmapResize

The problem with that is it is re-sized before it is cropped so you can't get a full resolution crop.

 

[klaus]

The problem with that is it is re-sized before it is cropped so you can't get a full resolution crop.

Sure, I know.
I do not have another solution for now.