Android custom view password box instance code

Expose all properties or behaviors that affect the visible appearance in your view.

• add and set styles through XML

• event listeners that control the appearance and behavior of elements through their attributes and support communication with important events

For detailed steps, see: Android custom view steps

Rendering display:

Supported styles

Attributes that affect the outside and behavior can be defined through XML as follows

Border fillet value, border color, split line color, border width, password length, password size, password color

At the same time, it supports the original EditText function, which can obtain data values, numeric keyboard settings, etc

Draw the main code of logic