MPVolumeView does not show route button on launch

Question

iOS 9.1 - iPhone 6S

MPVolumeView\'s route button (airplay) is not showing when app launches even when there are wireless routes available.

I have tried query

Answer 1

As @kvr said, first test on hardware device

Airplay route button appears when more than one route is available.

Trick I found to show permanently Airplay Button is to hide MPVolumeView route button, remove user MPVolumeView user interaction and target the route button action with a UIButton Wrapper.

var airplayRouteButton: UIButton?

private func airPlayButton() -> UIButton {
    let wrapperView = UIButton(frame: CGRect(x: 0, y: 0, width: 44, height: 44))
    wrapperView.setImage(YOUR_AIRPLAY_IMAGE, for: UIControlState.normal)
    wrapperView.backgroundColor = .clear
    wrapperView.addTarget(self, action: #selector(PlayerView.replaceRouteButton), for: UIControlEvents.touchUpInside)

    let volumeView = MPVolumeView(frame: wrapperView.bounds)
    volumeView.showsVolumeSlider = false
    volumeView.showsRouteButton = false
    volumeView.isUserInteractionEnabled = false

    self.airplayRouteButton = volumeView.subviews.filter { $0 is UIButton }.first as? UIButton

    wrapperView.addSubview(volumeView)

    return wrapperView
}

@objc private func replaceRouteButton() {
    airplayRouteButton?.sendActions(for: .touchUpInside)
}