Android simple calculator
- 1. ANDROID SIMPLE CALCULATOR S. KATHEESKUMAR H.N.Dip.in Information Technology
- 2. CONTENT • Final Output Design • Introduction About Android • Android Versions • Calculator Design (activity_main.xml) • Calculation code (MainActivity.java) • String xml • Styles xml
- 4. INTRODUCTION ABOUT ANDROID • It is a open source software platform and operating system for mobile devices. • Based on the Linux kernel • Developed by Google and later the Open Handset Alliance (OHA). • Allows writing managed code in the Java language. • Android has its own virtual machine i.e. DVM(Dalvik Virtual Machine) ,which is used for executing the android application. • Google purchased the initial developer of the software , android incorporated in 2005.
- 5. ANDROID VERSIONS • Angel Cake (Android 1.0) • Battenberg (Android 1.1) • Cupcake (Android 1.5) • Donut (Android 1.6) • Eclair (Android 2.0/2.1) • Froyo (Android 2.2) • Gingerbread (Android 2.3) • Honeycomb (Android 3.0) • Ice Cream Sandwich (Android 4.0) • Jelly Bean (Android 4.1) • KitKat (Android 4.4) • Lollipop (Android 5.0/5.1/5.2) • Marshmallow (Android 6.0/6.1) • Nougat (Android 7.0) • Ore (Android 8.0) • Pie (Android 9.0)
- 7. CALCULATOR DESIGN • XML file contains; Design View And Text View (Coding of the Widgets)
- 8. CALCULATOR CODE (.JAVA FILE) • Java File Here is the actual coding of the working of the app
- 9. STRING.XML
- 10. STYLES.XML
- 11. THANK YOU!