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Editorial Team
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Asked: 2026-06-09T22:09:15+00:00

Suppose I have an Activity, for which I set the content view from a

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Suppose I have an Activity, for which I set the content view from a XML file.

Let’s say I have a button, acceptButton, in the Java code.

acceptButton =(Button)findViewById(R.id.acceptBtn);

In the above code, the Java name and the XML id are different. Is there a “best practice” or standard for naming widgets? For example, should the XML id be called acceptButton too, instead of acceptBtn? It seems trivial, but it annoys me what other people do, when they give the Android name and XML id completely different names.

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1 Answer

  1. Editorial Team

    There is no recommendation from Google about naming resources in xml files. Also checking Code Style Guidelines for Contributors you find no mention about it, so the best would be taking a look in the SDK where you can see Google is not consistent in identifier naming.

    Across the SDK you can find conventions as follow:

    mHeaderText = (TextView) view.findViewById(R.id.headerText);

mHeaderText = (TextView) view.findViewById(R.id.header_text);

mHeaderText = (TextView) view.findViewById(R.id.HeaderText);

    What I recommend is to be consistent per project. Decide for one naming convention and use it across the entire project.

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