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Android

Posted by Vinay Mishra
Vinay Mishra
5,496 Points

What is the purpose of ID in Android

I saw in the video that the ID names were changed. However, i did not understand the concept and the utility of IDs here. What is ID called in Java? Also, why are we using camel case for ID?

1 Answer

Bob Boursaw
Bob Boursaw
2,047 Points
Bob Boursaw
Bob Boursaw
2,047 Points

An ID uniquely identifies an element, such as a TextView or Button, within the application. Since there can be multiple text views or buttons within a class/within the application, each need to have a unique name. It is also the ID that you will call on to to change properties of said item or to otherwise refer to it in your code. I am not sure, but camel case is just a convention. I do not believe there is a functional requirement to use camel case when naming anything within your code. That said, there are definitely situations where case does matter, as when declaring a new string variable, the data type (I am pretty sure) must be String and not string. I am pretty new to all of this myself, so hopefully I am not leading you astray.