[iOS] 判斷App在前景或背景
收到推播時有兩種狀況：
- 前景 (Foreground)
- 背景 (Background)
廣告
Just My Life & My Work
標籤雲
- teach
- ios
- illustration
- food
- app
- travel
- chat
- life
- restaurant
- record
- opencv
- tool
- relationship
- photos
- service
- design
- information
- technique
- chart
- work
- love
- experience
- xcode
- problem
- exercise
- art
- user interface
- accessory
- health
- practice
- video
- platform
- apple
- photography
- jog
- animation
- story
- environment
- activity
- mrt
- book
- map
- iphone
- movies
- opengl
- statistics
- festival
- memory
- company
- bike
- taipei
- software
- game
- ipad
- transportation
- youtube
- blender
- open source
- project
- research
- image
- taiwan
- lecture
- objective c
- image processing
- glsl
- thought
- music
- marriage
- comparison
- quotation
- paper
- hotel
- business
- career
- song
- all you can eat
- notification
- observation
- sport
- device
- network
- lyrics
- experiment
- apple watch
- friend
- achievement
- internet
- wifi
- income
- coffee
- photo
- programming
- competition
- breakfast
- macbook
- technology
- file
- user experience
- swift
- camera
- start-up
- install
- customization
- hamburger
- movie
- line
- money
- library
- performance
- thailand
- Ionic
- article
- buffet
- trend
- svm
- celebration
- gift
- birthday
- debug
- typhoon
- weather
- tone mapping
- stylization
- history
- notebook
- firework
- bbq
- language
- job
- recall
- mac os x
- color space
- reunion
- github
- architecture
- process
- course
- product
- definition
- korea
- framework
- motocycle
- culture
- photoimpact
- face detection
- plan
- flow
- time
- friendship
- rgb
- hong kong
- profession
- report
- version
- wwdc
- track
- high dynamic range
- algorithm
- sex
- shop
- girl
- flower
- conference
- future
- enterprise
- family
- learn
- park
- photograph
- value
- date
- salary
- share
- vacation
- growth
- mission
- rule
- development
- marathon
- soap opera
- mv
- wordpress
- decision
- leisure
- japan
- sleep
- c++
- concept
- attitude
- stitch
- advertisement
- screen
- station
- route
- brand
- beverage
- open data
- end banquet
- function
- c/c++
- scenery
- application
- group
- setting
- ice cream
- review
- message
- flowchart
- communication
- developer
- introduction
- certificate
- javascript
- AngularJS
- cie lab
- celebrity
- feast
- temple
- meeting
- webgl
- 3g
- campus
- mountain
- clothes
- web
- website
- computer graphics
- machine learning
- noodle
- filter
- illustrator
- database
- habit
- bus
- train
- brunch
- happiness
- magazine
- christmas
- religion
- journey
- image compression
- data
- monitor
- messenger
- localization
HappyMan・迴響