android - Do i have to use fragments when using navigation drawer -


i building app, , have decided implement navigation drawer ease of use. currently, classes extend activity, however, looking @ navigation drawer examples, use fragments. have use fragments this, or can keep classes activities? worried, have finished app, , have been told not use same methods.

to keep rich ui feature better off using fragments.

if have trouble calling methods can call 

getactivity( ).themethod ( )

that use parent activity call relevant methods you.


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