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.

Apple

Direct Manipulation

Apple Human Interface Guidelines

Apple design principles

Design

Apple

Guidelines

iOS

Human interface

Torsten Caspar

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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.

Apple

Clarity · Negative space, color, fonts, graphics, and interface elements subtly highlight important content and convey interactivity.

Apple

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.

Apple

Deference · Minimal use of bezels, gradients, and drop shadows keep the interface light and airy, while ensuring that content is paramount.

Torsten Caspar

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.

Apple

Aesthetic integrity · It 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.

Apple

Aesthetic integrity · An immersive app, such as a game, can deliver a captivating appearance that promises fun and excitement, while encouraging discovery.

Torsten Caspar

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.

Apple

Feedback · It acknowledges actions and shows results to keep people informed. The built-in iOS apps provide perceptible feedback in response to every user action.

Apple

Feedback · 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.

Apple

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.

Torsten Caspar

Metaphors · They 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.

Torsten Caspar

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.

Apple

User Control · 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.

Apple

I don't have anything against Jimmy Fallon. I love Jimmy Fallon. He's my dude.

Tracy Morgan

When you are an actor, you have to stay inside this world, but when you are with the crew, on the outside, you are in the dirt, working through all the issues. It's just a different way of working, and I think I preferred it.

Angelina Jolie

Every day the choristers of the social web chirp their advice about openness and trust; craigslist follows none of it, and every day it grows.

Gary Wolf

If Australia finds it has a strong Australian dollar, and it has higher unemployment, then it would have to respond, and that would either be by increasing domestic demand or by weakening its own currency.

Ben Bernanke

We should not be waiting until trains derail, bridges collapse and people die to adequately fund our transportation infrastructure.

Elizabeth Esty

I'm always, all the time, eating chocolate. I eat pretty healthy, but then I go all out when it has to do with chocolate.

Zoey Deutch

I'm often saddened and dismayed to see myself portrayed as either a Luddite or as a raving technophile. I've always thought that my job was to be as anthropologically neutral about emerging technologies as possible.

William Gibson

It's only when we truly know and understand that we have a limited time on earth - and that we have no way of knowing when our time is up, we will then begin to live each day to the fullest, as if it was the only one we had.

Elisabeth Kubler-Ross

George Foreman. A miracle. A mystery to myself. Who am I? The mirror says back. The George you was always meant to be. Wasn't always like that. Used to look in the mirror and cried a river.

George Foreman

People will send me tweets or texts, 'Yo, I'm at Red Lobster now and they're playing Mayer Hawthorne,' more of that kind of stuff, which is hilarious.

Mayer Hawthorne

I don't want to be a part of the demographics. I want to be an individual. I wear each of my films as a badge of pride. That's why I cherish all my bad reviews. If the critics start liking my movies, then I'm in deep trouble.

John Carpenter

Every action in our lives touches on some chord that will vibrate in eternity.

Edwin Hubbel Chapin

My main goal was to have something for everyone and not just one sound.

Shamir

HBO churn out some unbelievable stuff. They really got me with things like 'Band of Brothers.' But you can't beat 'The Sopranos.'

Mark Lawrenson

It is a general rule of Judgment, that a mischief should rather be admitted than an inconvenience.

William Cowper

I'm sick of playing romantic leads.

John Corbett

You cannot always make such big exhibitions, because they consume too much time and energy.

Alva Noto

Hope is some extraordinary spiritual grace that God gives us to control our fears, not to oust them.

Vincent McNabb

Wit is the appearance, the external flash of imagination. Thus its divinity, and the witty character of mysticism.

Karl Wilhelm Friedrich Schlegel

My daddy used to say that I was too big to ride and too little to hitch a wagon - no good for a damn thing.

Dan Blocker

Well, I'm getting happier all the time, which is very nice.

Ringo Starr

In his late quartets, Beethoven introduces an element that shouldn't be there, that should be left for meditation, though I love them. I can see that through them came Wagner and Mahler and Schoenberg and Berg. And then came Tracey Emin. And I can see it all as one downward path.

John Tavener

Give up the belief that mind is, even temporarily, compressed within the skull, and you will quickly become more manly or womanly. You will understand yourself and your Maker better than before.

Mary Baker Eddy

The most useful is the greatest.

Theodore Parker