# Human Interface Guidelines -iOS-
If you checked out iOS developer roadmap, you would know that Mobile Human Interface Guideline is the first step. It has a bunch of interesting information for iOS developers. I took some functions for granted but it was calculated and intended. You will know what I said after reading this guideline. But it would take a lot of time to read all these guidelines. So I will write some abridged versions on my blog from time to time. So if you didn’t check these out, you could read my summary.
# 1. Design Principles
Aesthetic Integrity Aesthetic integrity represents how well an app’s appearance and behavior integrate with its function.
Consistency A consistent app implements familiar standards and paradigms by using system-provided interface elements, well-known icons, standard text styles, and uniform terminology.
Direct Manipulation The direct manipulation of onscreen content engages people and facilitates understanding.
Feedback Feedback acknowledges actions and shows results to keep people informed. The built-in iOS apps provide perceptible feedback in response to every user action.
Metaphors People learn more quickly when an app’s virtual objects and actions are metaphors for familiar experiences—whether rooted in the real or digital world.
User Control Throughout iOS, people—not apps—are in control. An app can suggest a course of action or warn about dangerous consequences, but it’s usually a mistake for the app to take over the decision-making. The best apps find the correct balance between enabling users and avoiding unwanted outcomes.
# 2. Interface Essentials
Most iOS apps are built using components from UIKit, a programming framework that defines common interface elements. The interface elements provided by UIKit fit into three main categories:
Bars. Tell people where they are in your app, provide navigation, and may contain buttons or other elements for initiating actions and communicating information.
Views. Contain the primary content people see in your app, such as text, graphics, animations, and interactive elements.
Controls. Initiate actions and convey information. Buttons, switches, text fields, and progress indicators are examples of controls.
In addition to defining the interface of iOS, UIKit defines functionality your app can adopt. Through this framework, for example, your app can respond to gestures on the touchscreen and enable features such as drawing, accessibility, and printing.
# References
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