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)。我已经尝试在创建MPVolumeView后查询我的MPVolumeView以检查无线路由,然后我得到0.我只能通过禁用和启用WiFi来触发a来获得1(并显示路由按钮)通知。
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?
以下是我创建MPVolumeView的代码:
-(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];
}
答案 0 :(得分:5)
正如@kvr所说,首先在硬件设备上进行测试
当有多条路线可用时,会出现Airplay路线按钮。
Trick我发现永久显示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定位路线按钮动作。
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)
}