Principle 1: Users do not have the energy to study your application. Suppose that an application cannot be understood very clearly at the outset, and cannot be used very quickly. The user will discard the application.
Principle 2: To let the user know the core function and usage of the application at a glance
Principle 3: Reduce cognitive load and never allow customers to learn
Principle 4: Keep track of your fingers flowing smoothly
Principle 5: Content priority should give content to a lot of other screens. Rather than navigating.
Just be at the right time. Let the user call out the navigation, you can
Step One
1.1 Market research (also available at mobile stores in all major platforms.) To search for existing applications to learn from each other)
1.2 Application positioning
1.3 User Analysis
1.4 Sketching a prototype
Step Two (the Fidelity phase in the prototype)
2.1 Choosing a layout and navigation method
2.2 Setting controls and interface elements
2.3 Usability Test
Step three (high-fidelity prototypes and the completion phase of the design)
3.1 Sexual design
3.2 Icon Design
3.3 Delivering the developer
App design principles, steps