Assign a view ID programmatically in Android

Question

I'm trying to create a RelativeLayout with several children programmatically. To make the rules like RelativeLayout.RIGHT_OF work, the child views must have proper IDs.

However, when I try to assign an ID, Android Studio flags it as an error:

view.setId(123);

ERROR: Expected resource of type id

Devinne

Answer 1

Found it:

view.setId(View.generateViewId());

Devinne

Where do you set "123" as id? – Analogous

I don't need 123, I just need a new ID that doesn't conflict with an existing one. – Devinne

generateViewId() requires API level 17. – Madid

so how do you use that Id later then? – Rambow

view.setId(..) sets the view's Id to the value you got by invoking View.generateViewId(). That's it, you used it to assign it to your view. – Devinne

@ArtemioRamirez use view.getId() – Cynthy

private int viewsCount; mEditTextDynamicTime.setTag(viewsCount); mEditTextDynamicTime.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final int position = (Integer) v.getTag(); Log.d("position====>", String.valueOf(position)); } }); viewsCount++; – Expressage

Answer 2

You have two options:

1. This is not a compiler error. It is just editor validation error as this is not a common way to deal with Ids. So compile and run with no problems
2. Use pre-defined list of Ids with type "id" as this accepted answer https://mcmap.net/q/239118/-how-to-set-id-of-dynamic-created-layout so the editor will be happy.

Bichromate

Answer 3

In Android Studio click on lightbulb on line with this 'error'. And select 'Disable inspection' in first submenu.

Freidafreight

Answer 4

As others have said, you shouldn't be using Integers directly in this case. There are some very rare cases where you might need to do this or in general suppress validation warnings. If so then you need to look into Lint. In Android Studio you can click on the red light bulb at the left side of the line of code. This will show a context menu with a list of methods of suppression.

Lording