Android Question how to resize file image

[Markos]

Hi All,

Is there a library to permit changing the size (width and height) of an image file be it from data array or a file say in jpeg format

 

[Erel]

XUI.LoadBitmapResize.

And then save the image.

 

[Markos]

Cheers Erel!

using a bitmap object would the Resize function achieve the result of resizing the bitmap a code snippet shown below

        Dim bmpnew0 As Bitmap
        Dim bmpnew As Bitmap

        bmpnew0 = LoadBitmap(File.DirAssets, "SomeFile.jpg"))
        bmpnew=bmpnew0.Resize(320,240,True)
        out = File.OpenOutput(File.DirInternal, "tmpfile2.jpg", False)
        bmpnew.WriteToStream(out, 100, "JPEG")

 

[Erel]

Better to use XUI.LoadBitmapResize.

1. It is cross platform.
2. It most cases it will not load the full image to memory, which can result in out of memory issues with very large images.

 

[Markos]

Better to use XUI.LoadBitmapResize.

1. It is cross platform.
2. It most cases it will not load the full image to memory, which can result in out of memory issues with very large images.

Many thanks Erel I will utilise your suggestion as primary given your insight. Although for images 3mb or less it seems to work well using the previous method

 

[tchart]

Or use Thumbnailator. Has many useful features.

Thumbnailator library - Pnd_Thumbnailator - Create image thumbnails (UI/Non-UI/Server)

Wrapper is based on Thumbnailator v0.4.20 from HERE. Features: Create high-quality thumbnails from existing images. Option to embed a watermark (such as a logo) in the thumbnails. Transparency of the watermark is adjustable from transparent (0%) to opaque (100%). Supports rotation of...

www.b4x.com

 

[LucaMs]

Or use Thumbnailator. Has many useful features.

I see this is a library for B4J; the question here is about B4A, and it MAYBE wouldn't handle very large images well (but since it's for B4J - Desktop, that shouldn't be a problem).

Interestingly:

Work on UI/Non-UI/Server applications.

I didn't know about it, thanks for the link, @tchart