Pillow not work on android app

[1000 MMO]

Hello friends !
I use pillow library to process screenshots from my phone screen. Specifically, I imported the library as follows:
from PIL import Image, ImageFilter
import PIL.ImageOps

Building the apk file and starting the app works perfectly. But when starting to use PIL Image, ImageFilter, the app stops suddenly.

I declared the full pillow as follows:

requirements = python3,kivy==2.0.0,Pillow

----

When I use pydroid3 and run my main.py file it works fine. I think there's something wrong with the pillow library. Or the declaration is not enough for kivy to recognize the Image extension, ImageFilter.Hope to get help. Thank so much

[Wilson Mutebi]

Try 'pillow' with lowercase and not 'Pillow'

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[Lurious Silveirous]

Try to use PIL on the requeriments

[1000 MMO]

I try Pillow, pillow, Pillow==7.0.0 
all of them didn't solve my problem

Vào lúc 18:52:01 UTC+7 ngày Thứ Năm, 26 tháng 8, 2021, wilsonm...@gmail.com đã viết:

[1000 MMO]

I try PIL but not work. I think the system failed to find the extension in the library. Do you have any other ideas?
requirements = python3,kivy==2.0.0,numpy,PIL

is it related to garden_requirements?

Vào lúc 19:01:43 UTC+7 ngày Thứ Năm, 26 tháng 8, 2021, luwey...@gmail.com đã viết:

[Matthew Proudman]

Hi all 

this might be because PIL uses external dependcy that can not packaged into .APK file

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[Wilson Mutebi]

Mathew could be right though I have done quite a number of projects with pillow as an active requirement. Could you share with us your log at after the app is running on the phone? 

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[1000 MMO]

I have attached the files. Do you have any ideas to fix this problem?

Vào lúc 22:46:16 UTC+7 ngày Thứ Năm, 26 tháng 8, 2021, wilsonm...@gmail.com đã viết:

[Wilson Mutebi]

Have tried to use the "buildozer android debug deploy run" command when building the app? It will show you what causes the problem. Just set your logcat level in the spec file to 2. Then connect your device after enabling developer mode with USB debugging. The run that above command and look at the logs as the app is running until it crashes 

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[Robert]

Look in the logcat for "Traceback"

Just like on the desktop, look at the end of the traceback:

08-26 17:26:40.464 27096 27165 I python : File "/content/.buildozer/android/platform/build-armeabi-v7a/build/python-installs/oro/PIL/Image.py", line 2809, in open

08-26 17:26:40.466 27096 27165 I python : PermissionError: [Errno 13] Permission denied: '/sdcard/Pictures/screen1629973598207471oro.png'

It is a permission issue.

[Wilson Mutebi]

Oh it a read or write permission. 

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[Robert]

Yes, but if you use Android>=10 the resolution requires the MediaStore, not simply read permission.

In that case the easiest thing to do is (assuming you supplied the image) is to put the imgae in local storage not in shared storage.

[Wilson Mutebi]

Noted

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[1000 MMO]

I am using for samsung s7 390N, android 8, root magisk. 
I would like to thank Robert and wilsonm   for the logcat issue. I have no experience in reading logcat, it's too informative. I will reconsider about permissions.
I will solve the problem based on the above analysis and report back to you when it is done. Best regards

Vào lúc 00:28:46 UTC+7 ngày Thứ Sáu, 27 tháng 8, 2021, wilsonm...@gmail.com đã viết:

[Robert]

You can filter the logcat to just messages from Python, which most issues are.

Using Buildozer:

# (str) Android logcat filters to use
android.logcat_filters = *:S python:D

Using adb:

adb logcat *:S python:D

[1000 MMO]

Hello Guys !
I have solved this problem. I neglected to give sdcard management permission when installing the app. So I just need to grant the app permission in the app settings.

Thanks for the support from Robert and wilsonm. I have learned many things from this problem. Best regards !

Vào lúc 03:02:15 UTC+7 ngày Thứ Sáu, 27 tháng 8, 2021, Robert đã viết: