[IMPORTANT] SDK downgrade

[Kuan-Pang]

• Android's stable support on Java SDK is stuck with 1.8, but our current config is building on SDK16. Our project does not compile in Android studio.

• We need to downgrade our SDK to 1.8. Technically speaking, the functionality shouldn't be affected, but we need everyone to adjust settings and syntactic sugar in the project, including:

  • Gradle.build: I will be posting the modified Gradle build config in next PR, before noon today.
  • Syntaxes that are not supported in 1.8: all advanced ones should be "desugared" and modified to compilable syntaxes. I will suppress these syntaxes and mark "TODO" sign next to it (by noon today). Please take a look at your codes and fix the TODOs. Modifications include:
    • Literal box of workday calendar, project logo in the constants.
    • Enhanced switch statements in calendarService branch.
    • blablabla, some other unexpected staff.

• To make sure we all have the same environment, please check two settings listed below:

  • Press CMD + , and go to BUILD, EXecution, Deployment - Build Tools - Gradle, check the Gradle JVM version is 1.8
    
  • Press CMD + ;, and go to Project, check the Project SDK` is 1.8.
    

• I hate Android 🤓.

SAD

[Kuan-Pang]

The PR is now merged to the main branch, please clone a new version from the main branch. Let me know if it complies.