Objective c 如何在AVPlayer中播放NSData？

我使用同源poolid从AWS服务器下载了视频

NSData

。将

NSData

转换为

NSURL

后，尝试在

AVPlayer

中播放

NSData

。但它不是在玩

在接口中，我定义了

@property (nonatomic, strong) AVPlayer *avPlayer;

这是密码

NSData *data = [UserProfileInfo getVideoData];
NSLog(@"%lu", (unsigned long)data.length);

NSString *dataString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
_avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:dataString]];

_avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
AVPlayerLayer *videoLayer = [AVPlayerLayer playerLayerWithPlayer:_avPlayer];
videoLayer.frame = videoPreviewView.bounds;
videoLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
[videoPreviewView.layer addSublayer:videoLayer];
[videoPreviewView.layer setOpacity:1.0];
[_avPlayer play];

实际上，我在这里获取数据，但当我将其转换为

NSString

NSString *dataString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

然后我在数据字符串中得到

nil

。

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请找人帮忙。

您需要将NSDATA保存在文档目录中，并将其路径提供给AVPlayer以便播放

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
            NSString *documentsDirectory = [paths objectAtIndex:0];
            NSString *myPathDocs = [documentsDirectory stringByAppendingPathComponent:@"myVideo.mp4"];
            [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
            BOOL isFileWriteComplete = [yourNSdata writeToFile:myPathDocs atomically:YES];
    if(isFileWriteComplete)
    {
_avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:myPathDocs]];
_avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;
AVPlayerLayer *videoLayer = [AVPlayerLayer playerLayerWithPlayer:_avPlayer];
videoLayer.frame = videoPreviewView.bounds;
videoLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
[videoPreviewView.layer addSublayer:videoLayer];
[videoPreviewView.layer setOpacity:1.0];
[_avPlayer play];
    }

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添加您的UserProfileInfo数据UserProfileInfo是我的模型类，我已在其中存储下载的NSData。我使用getVideoData方法获取数据变量中的NSData。