小编Sur*_*kar的帖子

我正在尝试添加一个UISlider来控制AVPlayerViewController中的音量,为此我在'AVPlayerViewController.contentOverlayView'上添加了一个UISlider.UISlider不允许我拖动,好像没有启用它并且它的选择器操作方法'changeVolumeLevelOfPlayer'没有被调用.

这是我的代码:

-(void)viewDidLoad {

 [super viewDidLoad];

 [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

 [[AVAudioSession sharedInstance] setActive:YES error:nil];

 [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

 AVPlayerViewController *avPlayerViewController = [[AVPlayerViewController alloc] init];

 AVPlayer *player = [AVPlayer playerWithURL:[self getVideoURLAtIndex:[self.indexOfCurrentTrailer intValue]]];

 avPlayerViewController.player = player;

 avPlayerViewController.delegate = self;

 [player play];

 avPlayerViewController.view.frame = CGRectMake(0, 0, 300, 250);

 UISlider *sliderForVolumeControl = [[UISlider alloc] initWithFrame:CGRectMake(0, avPlayerViewController.view.frame.size.height/2, 100, 40)];

 [sliderForVolumeControl setMinimumValue:0.0];

 [sliderForVolumeControl setMaximumValue:1.0];

 [sliderForVolumeControl setValue:0.5];

 sliderForVolumeControl.continuous = YES;

 [sliderForVolumeControl setBackgroundColor:[UIColor orangeColor]];

 [sliderForVolumeControl addTarget:self action:@selector(changeVolumeLevelOfPlayer:) forControlEvents:UIControlEventValueChanged];

 [sliderForVolumeControl setUserInteractionEnabled:YES];

 [sliderForVolumeControl setEnabled:YES];

 [avPlayerViewController.contentOverlayView addSubview:sliderForVolumeControl];

 [self addChildViewController:avPlayerViewController];

 [self.view addSubview:avPlayerViewController.view];

 [avPlayerViewController …

我正在使用 PKPaymentAuthorizationViewController 及其委托方法集成 Apple Pay。当用户更改地址时，将触发以下委托方法：

- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller didSelectShippingContact:(PKContact *)contact completion:(void (^)(PKPaymentAuthorizationStatus status, NSArray<PKShippingMethod *> *shippingMethods, NSArray<PKPaymentSummaryItem *> *summaryItems))completion

当我尝试从“联系人”访问电话号码时，它始终为空，姓名（名字、姓氏等）也为空。但选定的送货联系人具有姓名、电话号码、邮政地址等所有信息。

PKPaymentRequest *pkPaymentRequest = [[PKPaymentRequest alloc] init];
pkPaymentRequest.merchantIdentifier = merchantId;
pkPaymentRequest.supportedNetworks = @[PKPaymentNetworkAmex, PKPaymentNetworkMasterCard, PKPaymentNetworkVisa, PKPaymentNetworkDiscover];
pkPaymentRequest.merchantCapabilities = PKMerchantCapability3DS;
pkPaymentRequest.countryCode = @"US";
pkPaymentRequest.currencyCode = @"USD";
pkPaymentRequest.requiredShippingContactFields = [NSSet setWithArray:@[PKContactFieldPostalAddress, PKContactFieldName, PKContactFieldPhoneNumber]];

这是我现在一直在使用的地址：

在下面的屏幕截图中找到调试信息，其中显示 PKContact 对象“联系人”缺少所需的信息。