Kanji flashcard app

Learn you a kanji for great good!
Learn some commonly used kanji characters and have fun with this simple flashcard game for ios.

Run in development

Use LearnYouKanji.xcworkspace not LearnYouKanji.xcodeproj.

Run React Native as well as building/running iOS app from Xcode.

# Ensure that Node server is running and available on the same network
# cd into root directory (where index.ios.js is), then run
$ npm start

About the data

App uses lists of Jōyō kaji.
List of jōyō kanji taken from https://en.wikipedia.org/wiki/List_of_j%C5%8Dy%C5%8D_kanji
Grade 07 and up means that it is taught in secondary school.
Secondary school characters are split into 5 sections.

About the source code

Project uses SwiftyJSON. Install it with Carthage.
No it doesn't. It uses a plist file now.

Todo

Add about page with 'what is joyo kanji' + useful info
Add section on radicals

Notes

Inspect core data:

# Navigate to correct sqlite file - somewhere in 
$ cd ~/Library/Developer/CoreSimulator/Devices/

# Searching for it can be a bit tedious
$ find . -name LearnYouKanji
$ find . -name "*.sqlite"

# Use sqlite command line manager 
$ sqlite3 LearnYouKanji.sqlite

# Useful commands 
> .dbinfo main 
> .tables
> .schema <TABLENAME>

# These tables exist:  
# ZCOURSE  ZQUESTION  Z_METADATA  Z_MODELCACHE  Z_PRIMARYKEY  

# output table to inspect
$ sqlite3 LearnYouKanji.sqlite "SELECT * FROM ZQUESTION ;" > output.txt
$ sqlite3 LearnYouKanji.sqlite "SELECT ZCOURSE, ZID, ZQUESTION, ZANSWER, ZSTRENGTH FROM ZQUESTION ORDER BY ZID ASC;" > output.txt

Important

(Info.plist)
App Transport Security is good for your users. Make sure to re-enable it prior to releasing your app for production.

Troubleshooting

podfile:
develop from ios xcworkspace. Not xcodeproj.
pod update after editing (source of much problem)

react-navigation:
Add RCTLinkingIOS to podfile ?
update node (6 -> 8) ?

Unable to execute JS call: __fbBatchedBridge is undefined
Seems to occur only in dev mode

clean npm:
rm -rf node_modules && npm install
watchman watch-del-all
node_modules/react-native/packager/packager.sh --reset-cache

Warning: core data connection has no connected handler
See here

Xcode menu -> Product -> Edit Scheme...
Environment Variables -> Add -> Name: "OS_ACTIVITY_MODE", Value:"disable"

CoreData: error: Failed to call designated initializer on NSManagedObject class 'LearnYouKanji.Question'