Android studio error R.java

Question

I have an error in the R.java file when I open android studio 3.0.

Here is the error:

public static final int Both are incorrect=0x7f080002;

when I try to edit it or delete this line it keeps saying that:

"Generated source files should not be edited, The changes will be lost when the sources are regenerated"

Answer 1

This error mostly occurs due to the change in your layout.xml file

try to check your id's in layout.xml file as

• id's should not contain spaces
• id's should not start always with numbers
• id's should not be repeated
• id's should start with @+ or +

try to clean your project from menu or sync with gradle files.

Answer 2

The error happens because you have a wrong id in your layout. You can't use a space for id name in a view.

You need to check for the following id in your layout:

android:id="@+id/Both are incorrect"

Then remove or change the space, you can use underscore:

android:id="@+id/both_are_incorrect"

Answer 3

You can't edit R.java file because this file is auto-generated by compiler. And your problem is you can never use space in "id" & variable as well so first change your ID (it's better if you rename id using refactor) and rebuild you project hopefully it will work... Happy coding... :)