Question

Is there any way to create an inner class in the auto-generated R file?
Right now R file looks like this:

public static final class id {
  public static final int button1=0x7f020000;
  public static final int button2=0x7f020001;
  public static final int text1=0x7f020002;
}

And to access it, you should type

R.id.button1

What do I want to get it something like this:

public static final class id {
  public static final class activity1 {
    public static final int button1=0x7f020000;
  }
  public static final int button1=0x7f020001;
}

So I can access it with

R.id.activity1.button1

It is possible to manually edit the file, but that’s not the way I’m looking for

Update: I need this because my current project consists of around 20 activities, with 5-30 widgets on each of them. I’m skipping a lot of ids(mostly for buttons and layout), but still it’s not comfortable to type something like

AcEventListToolbarUserImageView

(AcEventList – name of activity, Toolbar – frame, UserImageView – user picture)

Update 2: partial solution is:
in activity layout xml

<TextView android:id="@+id_ActivityName/WidgetName" />

in the java code it will be:

R.id_ActivityName.WidgetName

Pros:

see all your activity list after typing “R.id_”;

see all widget ids for the activity you need by typing “R.id_ActivityYouNeed.”

Answer 1

The auto-generation of the R.java file is purely there as a mechanism to allow you to easily reference the contents of your res hierarchy from your code. As such, you cannot create sub-hierarchies.

The simple solution is to add context to your item names instead. For example, use @+id/Activity1_button1, and you can access this as R.id.Activity1_button1.