Side menu change

I have developed one app in Telugu and English languages, I want to change side menu if user select Telugu side menu will be in Telugu otherwise side menu as English. But the menu is not changing by selecting language , but after I close and reopen app menu is changing.

you can do that by using constant variable.
first declare all menu label variable in your service file. in my case i create one constant service file and declare LANGUAGE variable.
and use this variable as your sidemenu label

ex : {{constant.LANGUAGE.menu1}}

so whenever user change language you just have to assign your selected language label to this variable and it will automatically render it.
ex: if user select english then


and user select telugu then


here constant is object of constantservice

can you give the sample code.