Which platform is the most popular? https://ww w.statista.co m/statistics/ 266136/glob al-marketshare-heldbysmartphoneoperatingsystems/ http://gs.sta ● tcounter.co m/osmarketshare/mobil ● e/worldwide Android has the greatest market share, while IOS is the second. They have taken 99.8% of the mobile OS market. Microsoft is declining and have reached zero market share at first quarter of 2017. Clearly, either android or IOS will be suitable for me since most people will use one of the two OSs.


Learning skill
Research skill Fundamental knowledge of grammar, logic, multithread, object-oriented programming and Internet.
Sept4 Decision on Mobile Platform
Which platform have the most effective learning materials for me?
https://deve loper.androi /traini ng/index.ht ml
https://deve loper.apple. com/library/ content/refe rencelibrary /GettingStar ted/Developi OSAppsSwift /
Tutorial – Start Developing IOS Apps
Learning
Basic Swift Grammar and IOS Development
September ~ October
Sept10 Finished Swift Language webpage “a swift tour” section
The impact of receiving too many emails made a problem that need to be solved by another impact of scientific and technical innovation.
Skills Applied
Xcode simulator scaling. https://stac koverflow.co m/questions /18606926/a djusting-thexcodeiphonesimulatorscale-andsize https://stac koverflow.co m/questions /33792134/i os-changingxcodesimulatorscreen-size If simulator is 'zoomed in' you can scale it by 'window -> scale' to 75%, 50% or lower. You can also use command+1,command+2,mand+4 shortcut in your keyboard while simem

The IOS simulator from Xcode is occupied too much workspace. I found out the solution by researching similar problem in the forum Stack Overflow.
Personal Project
presentation
拓端咨询
Why I choose to make this app

Personal interest
For saving people’s time

Global context


Scientific and technical innovation
Sept16 Finished the first lesson “Built a Basic UI”.
Sept17 Finished the second lesson “Connect UI to Code”
Oct1 A problem

Fatal error EXC_BAD_INSTRUCTION after built.
Here are my opinions: ● Through skimming, I found I cannot understand those chapters as I suppose it is for developers who have prior knowledge about it. ● I found relatively easy to start another one because their guides are extremely detailed. I decided to start on IOS.
Error EXC_BAD_INSTRUCTION https://stackover /questio ns/35102749/exc -bad-instructionerror https://stackover /questio ns/39372939/exc -bad-instructionin-swift-whenloading-awebview Reconnect the outlet between storyboard and code. A button with disconnected outlet can lead to error