ios - 视频不在 GMSMarker 上播放

Question

我正在 GMSMarker pin 上播放视频，下面是我的代码。显示和隐藏/显示引脚 View ，一切正常。除了视频不播放。我正在使用带有 pinview 的 Storyboard。

@interface MapViewController () <GMSMapViewDelegate>

@property (strong, nonatomic) IBOutlet GMSMapView *mapView;
@property (strong, nonatomic) IBOutlet UIView *pinView;
@property (strong, nonatomic) GMSMarker *london;
@property (strong, nonatomic) AVPlayer *player;
@property (strong, nonatomic) AVPlayerLayer *playerLayer;

@end

@implementation MapViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:51.5 longitude:-0.127 zoom:18];
    self.mapView.camera = camera;
    self.mapView.delegate = self;

    CLLocationCoordinate2D position = CLLocationCoordinate2DMake(51.5, -0.127);
    _london = [GMSMarker markerWithPosition:position];
    _london.title = @"London";
    _london.tracksViewChanges = YES;
    _london.map = self.mapView;

    [self setUpVideoPlayer];
}

- (UIView *)mapView:(GMSMapView *)mapView markerInfoWindow:(GMSMarker *)marker {
    [self.player play];
    return self.pinView;
}

-(void)setUpVideoPlayer{

     NSString *videoFilePath = [[NSBundle mainBundle] pathForResource:@"SampleVideo" ofType:@"mp4"];
     AVAsset *avAsset = [AVAsset assetWithURL:[NSURL fileURLWithPath:videoFilePath]];
     AVPlayerItem *avPlayerItem =[[AVPlayerItem alloc]initWithAsset:avAsset];
     self.player = [[AVPlayer alloc]initWithPlayerItem:avPlayerItem];
     self.playerLayer =[AVPlayerLayer playerLayerWithPlayer:self.player];
     [self.playerLayer setFrame:self.pinView.frame];
     [self.pinView.layer addSublayer:self.playerLayer];
     [self.player seekToTime:kCMTimeZero];
}

请帮我解决这个问题。为什么视频没有播放。

提前致谢。

Answer 1

通常情况下，信息窗口在显示(添加为图像)后不会重新生成。要显示视频帧，它需要在视频播放时重新生成。这意味着窗口需要自动刷新。为此，您需要为 GMSMarker 设置一个属性。行如下，

    _london.tracksInfoWindowChanges = YES;

所以你的完整代码是

CLLocationCoordinate2D position = CLLocationCoordinate2DMake(51.5, -0.127);
_london = [GMSMarker markerWithPosition:position];
_london.title = @"London";
_london.tracksViewChanges = YES;
_london.tracksInfoWindowChanges = YES;
_london.map = self.mapView;

Google 文档是 https://developers.google.com/maps/documentation/ios-sdk/marker#set_an_info_window_to_refresh_automatically