目錄：挑戰(zhàn)：翻譯Human Interface Guildeline for iOS
翻譯：
iOS設(shè)計主題
作為APP設(shè)計者，任何人都有機會推出一款出類拔萃的產(chǎn)品，并登上App Store的榜首。為此，你需要滿足（我們）對質(zhì)量和功能的要求。
iOS與其他平臺的主要區(qū)別在于三個主題：
?? 清晰。在整個系統(tǒng)中，所有大小的文本都要清晰可辨，圖標(biāo)要精確易懂，裝飾要微妙恰當(dāng)，以對功能的高度關(guān)注推動設(shè)計。Negative space、顏色、字體、圖形和界面元素要巧妙地突出重要內(nèi)容，并體現(xiàn)（良好的）交互性。（Negative space負(fù)空間; 留白; 消極空間; 負(fù)面空間; 實體周圍的空間）
?? 順從。用變化流暢、干凈利落并且美觀的界面幫助人們理解內(nèi)容并與之互動，而不是與之斗爭。內(nèi)容通常填滿整個屏幕，而半透明和模糊常常暗示更多。盡量少使用邊框、漸變和陰影，保持界面輕盈，同時確保展示內(nèi)容是首位的。
?? 深度。用鮮明的視覺層次和逼真的動態(tài)變化傳達(dá)層次，賦予活力，促進(jìn)理解。用觸摸和探索性提高愉悅感，并允許在不丟失上下文的情況下訪問功能和其他內(nèi)容。在用戶瀏覽內(nèi)容時，用轉(zhuǎn)換提供一種深度感。
設(shè)計原則
為了最大限度地提升影響力和影響范圍，在設(shè)想App的特性時，請牢記以下原則。
審美完整性
審美完整性代表了一個應(yīng)用程序的外觀和行為與其功能的完美結(jié)合。例如，一個幫助人們執(zhí)行嚴(yán)肅任務(wù)的應(yīng)用程序可以通過使用微妙的、不顯眼的圖形、標(biāo)準(zhǔn)控件和可預(yù)測的行為使他們保持專注。另一方面，一個身臨其境的應(yīng)用程序，如游戲，可以使用非常吸引人的外觀，以確保歡樂和興奮，同時鼓勵探索。
一致性
一個高度一致的應(yīng)用程序應(yīng)該通過使用系統(tǒng)提供的交互界面元素、熟知的圖標(biāo)、標(biāo)準(zhǔn)文本樣式和統(tǒng)一的術(shù)語來實現(xiàn)一致的標(biāo)準(zhǔn)和范例，以人們期望的方式整合功能和行為。
可直接操控
屏幕內(nèi)容的可操控性越強越能吸引用戶使用，并幫助理解。當(dāng)用戶旋轉(zhuǎn)設(shè)備或使用手勢影響屏幕內(nèi)容時，應(yīng)該讓用戶體驗到很強的可操作性。通過直接操控，讓用戶可以即刻看到他們的行為產(chǎn)生的結(jié)果。
反饋
及時的反饋讓用戶可以確認(rèn)操作產(chǎn)生了效果，并且讓用戶知道操作的進(jìn)展。內(nèi)置的iOS應(yīng)用程序為用戶的每一個動作提供可感知的反饋。比如，當(dāng)用戶點擊交互元素時，元素會短暫地突出顯示，進(jìn)度條可以告知用戶長時間運行類操作的狀態(tài)，動畫和聲音會幫助闡明操作的結(jié)果。
隱喻
當(dāng)一個應(yīng)用程序的虛擬對象和操作是對熟悉體驗的隱喻時，無論這種體驗是根植于現(xiàn)實世界還是數(shù)字世界，人們都能學(xué)得很快。因為人們可以與屏幕進(jìn)行直接的物理交互，所以隱喻在iOS中被廣泛的使用，并且效果很好。用戶可以將視圖移開，以展示視圖之下的內(nèi)容，他們拖拽或滑動內(nèi)容，切換開關(guān)、移動滑塊、滑動選擇數(shù)值，甚至像翻閱書籍和雜志一樣翻閱應(yīng)用提供的內(nèi)容。
用戶掌控
在整個iOS系統(tǒng)中，控制局面的不應(yīng)是應(yīng)用程序，而應(yīng)該是人。一個應(yīng)用程序可以建議用戶采取某種行動方案或警告危險后果，但通常情況下，不能讓應(yīng)用程序接管決策。最好的應(yīng)用程序在聽從用戶決策和避免不想要的結(jié)果之間找到了正確的平衡。一款應(yīng)用程序應(yīng)該通過采取類似以下幾種的措施，讓人們感覺應(yīng)用在自己的掌控之中：使用人們熟悉和可預(yù)測的互動元素；在破壞性的行為進(jìn)行之前取得用戶的認(rèn)可；讓取消操作變得容易，即使這些操作已經(jīng)在進(jìn)行中。
原文：
iOS Design Themes
As an app designer, you have the opportunity to deliver an extraordinary product that rises to the top of the App Store charts. To do so, you'll need to meet high expectations for quality and functionality.
Three primary themes differentiate iOS from other platforms:
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.
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.
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.
Design Principles
To maximize impact and reach, keep the following principles in mind as you imagine your app’s identity.
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.
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.
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.
