How to get duration from AVMIDIPlayer

Question

benwiggy OP

Created Apr ’17

Replies 1

Boosts 0

Participants 2

AVMIDIPlayer has an instance property "duration":

var duration: TimeInterval { get }

So I've written:

let time = midiPlayer?.duration as! TimeInterval
print (time)

which runs, but of course I get error messages about 'forced cast from 'TimeInterval?' to 'TimeInterval' (aka 'Double') only unwraps optionals; did you mean to use '!'?

What am I doing wrong? (It's usually not enough or too many question marks....😁 )

Boost

Answer 1

NikoloziApps OP

Apr ’17

There's no point in casting, if you want to force unwrap then you just do this:

let time = midiPlayer!.duration

But it will crash if your `midiPlayer` is nil.

0