QUESTION $1$

a$)$ Provide a well labelled diagram of a service lifecycle.

b$)$ Provide a brief description for each of the following service callback methods.

i$.$ onStart $().$

ii$.$ onBind $().$

iii. onCreate $().$

iv$.$ onDestroy $().$

c$)$ What do you understand by the term fragment.?

d$)$ Write a java program that accepts user input from the keyboard and does the following operations sum, difference, division and product.

$[5]$