qreader | A pure python reader for QR codes | QRCode Processing library
kandi X-RAY | qreader Summary
kandi X-RAY | qreader Summary
A pure python reader for QR codes. Made to be compatible to Python 2.7 to 3.6+. We use the easy-to-install Pillow package to load the pictures, so lots of picture formats are supported.
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Top functions reviewed by kandi - BETA
- Read QR CodeInfo
- Validate format info
- Calculate straight bits
- Get the block height of the image
- Return the border of the image
- Return the mask function corresponding to the given mask ID
- Check format info
- Computes the Hamming distance between a and b
- Return the EC level for a given format info code
- Read the format_info field
- Get the bit at the given coordinates
- Return the pixel corresponding to the given coordinates
- Return info about the file
- Read data
- Validate data
qreader Key Features
qreader Examples and Code Snippets
Community Discussions
Trending Discussions on qreader
QUESTION
I code this to build QR reader.
...ANSWER
Answered 2021-Oct-05 at 18:43Try to remove this line android:background="@drawable/back"
from the layout activity_conductor
and see if it will work well..
QUESTION
I'm trying to save data into a sqlite db, i have looked around but the strucutre for the helper is always this, i can't find out what's the problem. I don't get any exception, just is impossible write data into the db
...ANSWER
Answered 2021-Jun-12 at 07:25Try below query with reinstall your app
QUESTION
I have issues applying escape sequences in a query to a kdb server.
The native query is:
...ANSWER
Answered 2020-Feb-22 at 16:29Have you tried escaping the square brackets?
query = 'select lo:min price, hi:max price by sym from trade where date = 2007.02.28, not cond like \"\[BMPQTUWZ\]\", corr <= 1'
QUESTION
I'm using the qReader library which according to my logs works as intended, contrary to the big error log, except when trying to change fragment using viewPager.setCurrentItem(0)
in the MainFragment. I'm hoping someone recognises these errors and can tell me if it's relevant to my problem of changing fragment. If no one recognises the errors then I'm guessing they're library specific and Ill open an issue on the library's github.
Log Summary
- SubFragment2 shows (YES)
- SubFragment2 scans QRCode and calls returnData() (YES)
- returnData() calls
mainFragmentInterface.onQRCodeScanned
(YES) - setCurrentItem(0) in onQRCodeScanned() runs (YES)
- case 0 in getItem() in FragmentPagerAdapter runs (YES)
- SubFragment 1 shows (NO)
Error Log
...ANSWER
Answered 2020-Jan-23 at 17:31It's not necessary to call CameraSource.stop() from the UI thread, but due to an implementation detail it should not be called from the thread that executes receiveDetections. The stop() code waits for this thread to finish, so calling it this way would create a deadlock.
Does CameraSource.stop() require to be called from UI Thread?
I had to release/stop the CameraSource object from the UI Thread to avoid the deadlock mentioned above.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install qreader
You can use qreader like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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