- Embrace borderless buttons
By default, all bar buttons are borderless. In content areas, a borderless button uses context, color, and a call-to-action title to indicate interactivity. And when it makes sense, a content-area button can display a thin border or tinted background that makes it distinctive.
Before, I didn’t there is a default that all bar buttons are borderless. This seems like a new “rule” based on iOS for apple users, because I still remember all the buttons were supposed to be designed like a 3D real button with some shadow, which leads users to think this button is clickable. However, flat design for UI seems like a new trend for designers to follow.
- Make it easy to focus on the main task by elevating important content or functionality
to do this are to place principal items in the upper half of the screen and—in left-to-right cultures—near the left side of the screen:
I never know this rule before. I understood why the upper information is more important because people read from top to bottom, but I don’t know why the left side should be placed more important content. Then I guess, because people read from the left side to right side, and most used control bar is placed on the left side as well.
- Starting and Stopping
It’s often said that people spend no more than a minute or two evaluating a new app. Don’t tell people to reboot or restart their devices after installing your app. Restarting takes time and can make your app seem unreliable and hard to use.As much as possible, avoid displaying a splash screen or other startup experience. It’s best when users can begin using your app immediately.
I totally agree with this guideline, I never thought about this as a designer before, but I did this all the time as a user. I will delete too complicated app after one minute if I can’t start to use it or play it or ask me to register and log in and …….. I guess maybe there are too many apps in the market right now, which makes users losing their patience and want to have the high efficiency and have a great use of the useful apps.