Simple calculator function developed and implemented by Android [download complete demo source code attached]

This article describes the simple calculator function developed and implemented by Android. Share with you for your reference, as follows:

Although there are still some small bugs in this Android calculator, the simple calculation function is still OK;

See the effect above first

It's relatively simple, so I didn't write much notes. I should be able to understand at a glance. If I don't understand, I can send a letter to ask me

Paste mainactivity.java code first

Paste layout activity again_ main.xml：

I also wrote a drawable XML. See for yourself

delete_ and_ deletegray.xml：

Attachment: click here to download the complete example code.

PS: Here we recommend several calculation tools for your further reference:

Online univariate function (equation) solving calculation tool: http://tools.jb51.net/jisuanqi/equ_ jisuanqi

Scientific calculator Online_ Advanced calculator online computing: http://tools.jb51.net/jisuanqi/jsqkexue

Online calculator_ Standard calculator: http://tools.jb51.net/jisuanqi/jsq

More readers interested in Android related content can view the special topics of this site: introduction and advanced tutorial of Android development, summary of Android basic component usage, summary of Android view skills, summary of Android layout skills and summary of Android control usage

I hope this article will help you in Android programming.