Through reading, I think the Gestalt principle emphasizes that the whole is greater
than the part, so I think the main content should be placed in the most conspicuous
place and occupy the largest space, and put related elements together, such as the
function dock should contain related elements to avoid user misunderstanding, and
the icon design style should be similar, so that users will feel that they work
together. The closed law is also mentioned in the reading, and users will
automatically fill in the information, so I think this can be used to simplify the icon
design and make the interface clearer. At the same time, we should also pay
attention to the principle of experience. The interface should not have too much
innovation. I think it may be designed to be more recognizable, but it should not be
too separated from the interface of similar apps. Fitts's law pays more attention to
the target and the mobility of the finger or pointer. In order to improve usability, the
button should be large enough to avoid accidental touches. For example, the
purchase button in Amazon is the largest, and the movement distance of the pointer
or finger should be reduced to facilitate touch. At the same time, we should also pay
attention to avoid buttons that are too small or too dense, ensure that the click area
is large enough, and leave a reasonable space between different buttons.