“Cannot Resolve Symbol” Error when using android:id=“@+android:id/my_id”

Question

When I am adding android:id/background to the namespace, Lint complains that it \"Cannot Resolve Symbol\" even though I am requesting to add it rather than call it. The code wor

Answer 1

If you are creating your own id:

"@+id/your_new_id"

if you are accessing your already created id

"@id/your_old_id"

if you are trying to access Android's system created id

"@android:id/system_id"

you can see the difference, if you are creating your own id then you have to add +. Since you are accessing system ID so you don't have to add +

Answer 2

It seems you are using an extra +.

You should remove it, replace as follows @+android:id/background to @android:id/background.

Answer 3

Try to replace @+android:id by @+id and see if it works!