Deisgn Principles

身為一位行動應用程式設計師，您有機會發表卓越的產品，並且在應用程式商店(App Store)上發光發熱。要作到這樣，您必須對其品質與功能上有高水準的要求。

iOS與其他平台的差異，主要來自於以下三點： Clarity. Throughout the system, text is legible at every size, icons are precise and lucid, adornments are subtle and appropriate, and a sharpened focus on functionality motivates the design. Negative space, color, fonts, graphics, and interface elements subtly highlight important content and convey interactivity. 清晰 整個系統中，文字在各個尺寸的呈現是優雅的，圖示精準道位，而依功能性的移動設計有專注，設計， 聚焦在功能動機的設計 空間、顏色、字型、圖形和介面元素，以確保突顯重要的內容與兼具互動性。 Deference. Fluid motion and a crisp, beautiful interface help people understand and interact with content while never competing with it. Content typically fills the entire screen, while translucency and blurring often hint at more. Minimal use of bezels, gradients, and drop shadows keep the interface light and airy, while ensuring that content is paramount. 遵從-操作流暢、清爽，好看的界面能讓人們理解滿版內容 Depth. Distinct visual layers and realistic motion convey hierarchy, impart vitality, and facilitate understanding. Touch and discoverability heighten delight and enable access to functionality and additional content without losing context. Transitions provide a sense of depth as you navigate through content. 層次 觸控和發現 當思考您移動應用程式的特性時，將下方的準則謹記在心，有助於 To maximize impact and reach, keep the following principles in mind as you imagine your app’s identity. 在想像行動應用程式的獨特性時，將下列準則謹記在心，能擴大影響 Aesthetic Integrity Aesthetic integrity represents how well an app’s appearance and behavior integrate with its function. For example, an app that helps people perform a serious task can keep them focused by using subtle, unobtrusive graphics, standard controls, and predictable behaviors. On the other hand, an immersive app, such as a game, can deliver a captivating appearance that promises fun and excitement, while encouraging discovery.

Consistency A consistent app implements familiar standards and paradigms by using system-provided interface elements, well-known icons, standard text styles, and uniform terminology. The app incorporates features and behaviors in ways people expect.

直接 Direct Manipulation The direct manipulation of onscreen content engages people and facilitates understanding. Users experience direct manipulation when they rotate the device or use gestures to affect onscreen content. Through direct manipulation, they can see the immediate, visible results of their actions.

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. Interactive elements are highlighted briefly when tapped, progress indicators communicate the status of long-running operations, and animation and sound help clarify the results of actions.

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. Metaphors work well in iOS because people physically interact with the screen. They move views out of the way to expose content beneath. They drag and swipe content. They toggle switches, move sliders, and scroll through picker values. They even flick through pages of books and magazines.

使用者控制 綜觀整個iOS，人員(而不是行動應用程式)是具備主導權的， 一款行動應用程式建議採取行動的原因或提醒警告危險的後果 但經常發生的錯誤是讓行動應用程式來決定決策產出。最好的行動應用程式是在讓使用者必且不想要的結果。在可控範疇內和熟悉的互動元素進行互動，確認分解的動作<並且史的取消動作更為簡單，甚至是正在進行的動作。 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. An app can make people feel like they’re in control by keeping interactive elements familiar and predictable, confirming destructive actions, and making it easy to cancel operations, even when they’re already underway.