I know that the
+ sign in the
id attribute of a View indicates that it’s a new user defined custom value that must be added to the
R.Java file. But, in the example XML Button View attributes below, why does the
@string not have the
+ symbol before the word
string like the
<Button android:id="@+id/my_button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/my_button_text"/>
The plus symbol,
+, indicates that this is a new resource ID and the
Android Asset Packaging Tool will create a new resource integer in the
R.java class, if it doesn’t already exist.
@string – Defined in resource files. The
<string> element’s name is used as the resource ID.