Such as the official Android Button ImageView and other controls, and we write their own custom controls, are all based on the same API,

Official controls have to use our regular developers cannot use special API?

If the official did not provide us with the Button, we can customize a and official functions the same Button out?

CodePudding user response:

Depending on what, if you write a complete, it will have to learn some events distribution mechanism, if they don't know, you still inherit native components

CodePudding user response:

Theory is the same, but some custom control with some of his own package of some other class or API or hidden under the resources of what, you imitate the classes you need to find a way to solve these problems,