I'll quote the Android Guidelines on error messages here, because they summarize it well into a single sentence: > It's not my fault > Be gentle in how you pr

I'll quote the Android Guidelines on error messages here, because they summarize it well into a single sentence: > It's not my fault > Be gentle in how you prompt people to make corrections. They want to feel smart when they use your app. If something goes wrong, give clear recovery instructions but spare them the technical details. If you can fix it behind the scenes, even better. You can find the other design principles of Android quickly summarized here: https://developer.android.com/design/get-started/principles.html https://developer.android.com/design/get-started/principles.... These design principles are important for any developer, on any platform, and they're short enough that they're easy to remember.