Problems with moving an image file to the asd

Informatik_Projekt · December 14, 2021, 9:14pm

Hello,
I want to use the Taifun Image Extension to crop an image. To manipulate the image, it must be in the application specific directory.
However, I have issues moving a file to this location. Trying different possibilities I found online, I either get the error message, no such file could be found (when using Anke's tutorial or Taifun's file extension) or just a crash (when using the regular file component).

This is what I did using @Taifun 's extension:
blocks

This is what I did for @Anke 's extension:

And this is what I did with the regular blocks:

If somebody could help me with any of these solutions, this would be greatly appreciated.

TIMAI2 · December 14, 2021, 11:00pm

Where is the original image in Image1.Picture (full file path - show this in a label), how did it get there (was it created by the app or some other app), and what type of image file is it (jpg/png/other) ?

Anke · December 14, 2021, 11:07pm

To cut a long story short, post the aia or a test aia.

Informatik_Projekt · December 15, 2021, 2:13pm

This is the aia with all methods included:
Bildbeschnitt2 (1).aia (137.6 KB)

Informatik_Projekt · December 15, 2021, 2:23pm

The file name (according to the Label) just "[Picturename].jpg" (without a slash at the start). I don't really know where exactly it lies.

Anke · December 15, 2021, 2:32pm

Which Android version are you testing on?
Note: My guide was made before the nb188 release.

TIMAI2 · December 15, 2021, 2:34pm

It is in your Assets (Media), where you put it !!

Anke · December 15, 2021, 2:42pm

And do not hard-code the ASD (packageName):

file:///storage/emulated/0/Android/data/appinventor.ai_informatikprojekt.Bildbeschnitt2/files/image1.jpg

TIMAI2 · December 15, 2021, 4:56pm

You cannot move files from the assets, you have to copy them.

Taifun · December 15, 2021, 6:27pm

Try the Copy method from the file component together with the correct scope Asset
http://ai2.appinventor.mit.edu.ezproxy.canberra.edu.au/reference/components/storage.html#File.Scope

Taifun

Informatik_Projekt · December 17, 2021, 6:11pm

Thank you!. The method appears to work (the app finds the path and doesn't throw an error message), but the image disappears when switching file place, although I changed the canvas background image accordingly.

Is the "/image1.png" path still wrong (not the asd)?

Anke · December 17, 2021, 6:38pm

Informatik_Projekt · December 18, 2021, 10:54am

Thanks, that fixes the issue that the image doesn't appear, but a NullPointer Exception when trying to get the size of the image ("attempt to invoke virtual method "int android.graphics.Bitmap.getWidth() on a null object reference")

TIMAI2 · December 18, 2021, 10:56am

It really helps if you show your relevant blocks, without them it is difficult to see what you are trying to achieve.

Anke · December 18, 2021, 11:46am

Of course, it doesn't work, because /image.jpg already redirects to the ASD with this ext.
Try this:

Informatik_Projekt · December 18, 2021, 12:12pm

Thank you! Sorry, I'm kind of new to this and didn't understand the file system fully.

Anke · December 18, 2021, 1:25pm