Android Custom user Controls simple example (ii)

It is not very convenient for other people to use controls that are completely custom-built, because we often need to see the effects of the controls placed on the XML interface and adjust the layout based on the effects, which requires a more standard control-making process:

1. Our custom controls, like other controls, should be written as a class, and the properties of this class are self-determined.
2. We want to create a attrs.xml file in the Res/values directory and add the definition of the control's properties to this file.
3. Use AttributeSet to complete the constructor of the control class, and in the constructor, connect the variables in the custom control class to the properties in the Attrs.xml.
4. Use these already connected property variables in your custom control class.
5. Define the custom control class to the XML file used in the layout.
6. This custom control class object is generated and used in the interface.

This blog will refine the last piece of control authoring so that it can become a standardized custom control.