Android custom components actively draw circles with their fingers

This example shares the specific code of Android to draw a circle with your finger for your reference. The specific contents are as follows

First, define a view subclass:

Main interface XML:

custom_ layout.xml

Primary activity:

effect:

besides:

You can also use XML: first, create a subclass of view. Same as above.

Then the main interface XML, for example:

The main activity file, for example:

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.