MPVolumeView在启动时不显示路线按钮 [英] MPVolumeView does not show route button on launch
问题描述
iOS 9.1 - iPhone 6S
iOS 9.1 - iPhone 6S
即使有无线路线可用,也会在应用启动时显示MPVolumeView的路线按钮(airplay)。
MPVolumeView's route button (airplay) is not showing when app launches even when there are wireless routes available.
我已经尝试在创建MPVolumeView之后查询我的MPVolumeView以检查无线路由并且我得到0.我只能通过禁用和启用WiFi来获得1(并显示路由按钮)触发通知。
I have tried querying my MPVolumeView after it has been created to check for wireless routes and I get 0. I'm only able to get 1 (and have the route button appear) by disabling and enabling WiFi to trigger a notification.
我的应用程序中的MPVolumeView用于控制从UIWebView播放的视频量。此外,每当我激活无线路由进行流式传输时,MPVolumeView滑块都会消失 - 有没有办法在使用UIWebView播放媒体时阻止此行为?
The MPVolumeView in my app is to control the volume of videos played from UIWebView. Also, whenever I activate a wireless route for streaming the MPVolumeView slider disappears - is there a way to prevent this behaviour when using UIWebView to play media?
以下是我的代码创建MPVolumeView:
Below is my code for creating the MPVolumeView:
-(void) createAndDisplayMPVolumeView{
// Create a simple holding UIView and give it a frame
volumeHolder = [[UIView alloc] initWithFrame: volumeSlider.frame];
volumeHolder.autoresizingMask = UIViewAutoresizingFlexibleHeight;
volumeSlider.hidden = YES;
// set the UIView backgroundColor to clear.
[volumeHolder setBackgroundColor: [UIColor clearColor]];
// add the holding view as a subView of the main view
[nowPlayingMainView addSubview: volumeHolder];
// Create an instance of MPVolumeView and give it a frame
myVolumeView = [[CustomVolumeView alloc] initWithFrame: volumeHolder.bounds];
myVolumeView.tintColor = [UIColor darkTextColor];
myVolumeView.showsRouteButton = YES;
myVolumeView.showsVolumeSlider = YES;
volumeRect = myVolumeView.frame;
[myVolumeView setRouteButtonImage:[UIImage imageNamed:@"airplayButton"] forState:UIControlStateNormal];
[myVolumeView setRouteButtonImage:[UIImage imageNamed:@"airplayButtonHighlighted"] forState:UIControlStateHighlighted];
[myVolumeView setRouteButtonImage:[UIImage imageNamed:@"airplayButtonSelected"] forState:UIControlStateSelected];
[volumeHolder addSubview: myVolumeView];
}
推荐答案
正如@kvr所说,首先在硬件设备上测试
As @kvr said, first test on hardware device
当有多条路线可用时,会出现Airplay路线按钮。
Airplay route button appears when more than one route is available.
欺骗我找到了永久显示Airplay按钮是隐藏MPVolumeView路线按钮,删除用户MPVolumeView用户交互并使用UIButton Wrapper定位路线按钮操作。
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)
}
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