Content:
• General
• Performance
- UI
- Graphics / Animations

• Getting Help

General

- Use the cfg object to enter specific app modes immediately (See CodingFeatures for more details)
- Use app.Script to load extra source files
- Use app.Add* eqivalents to app.Create* to make your code shorter and cleaner
- Use features that DS provides you instead of doing them yourself (ie. filtering ListFolder items)
- Frequently check the debug log for any warnings or errors - especially before releasing your app (see CreateDebug)
- Use the web IDE for coding if you have a laptop because it is much easier than typing and debugging on a phone

Performance

UI

- Wrap your UI creation in app.Hide and app.Show
- Use cfg.Dark and cfg.Light for an easy Light/Dark theme setting
- Use obj.Batch to do a whole bunch of configuration calls at one shot
- Add a (optionally animated) splash screen while your app loads UI
- Use app.SetDebug(false) in your release version
- Reduce the use of app.* calls (especially in loops) as it calls the backend bridge in most cases
- Use lay.SetChildMargins and lay.SetChildTextSize to apply these properties to all children
- When initializing list controls use a precompiled item list instead of calling AddItem multiple times
- Apply styling to buttons and text boxes using the “Html” option
- Use the premium app.CreateTheme method for styling controls

Graphics / Animations

- Use app.Animate instead of setInterval
- Use img.SetAutoUpdate(false) and use manual img.Update calls
- Switch to the CreateGameView control (using cfg.Game) as its generally faster and works in web browsers too
- use the “async” option to load images

Getting Help

- Check out this documentation and the DS Wiki for any hints
- Check if your issue has been resolved before by searching keywords on Google and on the OfficialForums
- For short questions check out the Chat extension in the mobile or WiFi IDE
- For more complex questions formalize your issue in the OfficialForums
  - Always be polite, respectful and never offend any person or group of people
  - Describe your issue in a way people can understand it without knowing anything about your individual project
  - Attach screenshots and demo SPKs to your question
  - Consider putting together a minimal demo showcasing your issue

Example - GetDeviceSpecs click to expand contents