未能更新UIImageView

Question

我试图通过本地IP流MJPEG视频到我的iOS应用程序。连接建立并且流成功，我可以在控制台中看到十六进制值更新。但是，UIImageView仅显示它收到的第一帧，并且在此之后不会更新。代码有什么问题？我甚至尝试用setNeedsDisplay刷新视图，但没有帮助。我知道NSURLConnection在iOS 9+中已弃用，这只是为了测试代码，因此如何解决这个问题？

#import "ViewController.h" 

@interface ViewController() 

@end 

@implementation ViewController 

@synthesize recievedData; 

- (void)viewDidLoad { 
    NSURLRequest *theRequest = 
    [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://192.168.0.15:8090/?action=stream"]]; 
    NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self]; 
    recievedData = [[NSMutableData alloc] init]; 
} 

- (void)didReceiveMemoryWarning { 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data 
{ 
    [recievedData appendData:data]; 
} 

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{ 
    NSLog(@"%@",recievedData); 

    UIImage *recievedImage = [UIImage imageWithData:recievedData]; 
    self.streamView.image = recievedImage; 
     [self.streamView setNeedsDisplay]; 


} 

@end 

Answer 1

因为我看到这是视频流，您需要使用视频播放器来显示媒体内容。