I think one was made in 1943, just shortly after the first comic book appeared in 1940. A serial starring Robert Lowery was made in perhaps 1947 or 1948. A "Camp" one starring Adam West appeared in 1966. Another one starring Michael Keaton appeared in 1989.
What of the 1943, 1947 and 1966 movies?
1966 is a TV movie ....
It was shown at theaters. There was a TV series and a movie at theaters.
Alright , you got me
By the way , 1966 was the first movie the ones before were serials
I thought I said that in my answer.
A serial tv series , converted into a movie doesn't count ...