ios - swift: weak cannot be applied to an outlet -

i using libzbar scanning qrcode in swift getting these errors.

.

first error weak referencing , second undeclared type. @ first thought haven't included zbarreaderview.h after checking file inspector found files correctly added

i have added zbarreaderview in objective-c , works fine. have viewed sample project adding embeddedreader(objectivec).

so want know why getting error , how remove error?

solution:

to import set of objective-c files in same app target swift code, rely on objective-c bridging header expose files swift. xcode offers create header file when add swift file existing objective-c app, or objective-c file existing swift app.

it looks didn't create bridging header. follow apple docs create 1 , import zbarreaderview.h in bridging header.