AndroidPlayground

Android Studio initial project template for new projects

ktlint rules setup

it makes Intellij IDEA's built-in formatter produce 100% ktlint-compatible code.

Option #1 (recommended)

(inside project's root directory)

ktlint applyToIDEAProject
# or if you want to be compliant with Android Kotlin Style Guide
ktlint --android applyToIDEAProject

Option #2

Apply to all IDEA projects:

$ ./ktlint applyToIDEA

Or if you want to use android specific code style:

$ ./ktlint --android applyToIDEA

Option #3

Go to File -> Settings... -> Editor

• General -> Auto Import
  • check Optimize imports on the fly (for current project).
• Code Style -> Kotlin
  • Set from... -> Predefined style -> Kotlin style guide (Kotlin plugin 1.2.20+).
  • open Code Generation tab
    • uncheck Line comment at first column;
    • select Add a space at comment start.
  • open Imports tab
    • select Use single name import (all of them);
    • remove import java.util.* from Packages to Use Import with '*'.
  • open Blank Lines tab
    • change Keep Maximum Blank Lines / In declarations & In code to 1 and Before '}' to 0.
  • (optional but recommended) open Wrapping and Braces tab
    • uncheck Method declaration parameters / Align when multiline.
  • (optional but recommended) open Tabs and Indents tab
    • change Continuation indent to the same value as Indent (4 by default).
• Inspections
  • change Severity level of Unused import directive and Redundant semicolon to ERROR.