暂停的无线电流从相同位置重新开始

Question

我正在学习iOS开发，我有一个使用MPMoviePlayerController的应用程序。我正在使用的流播放完美，但是如果我按下暂停按钮，则流程会在我按下暂停的同一时刻再次开始播放。当我按下暂停时，我正在寻找它停止流。当我重新启动流时，我希望它再次加载流并播放“直播”＃39;就像我第一次打开应用程序时那样。

这是我到目前为止使用过的代码（我想它很简单，但我刚刚开始）......

@interface FirstViewController()

@end

@implementation FirstViewController
@synthesize toolbar, play, pause, player;


- (void)viewDidLoad

{
[super viewDidLoad];



self.pause = [[UIBarButtonItem      alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemPause target:self action:@selector(playPressed:)];
[self.pause setStyle:UIBarButtonItemStyleBordered];


NSString *streamAddress =@"http://www.bbc.co.uk/radio/listen/live/r4_aaclca.pls";
NSURL *address =[NSURL URLWithString:streamAddress];

MPMoviePlayerController *stream = [[MPMoviePlayerController alloc]initWithContentURL:address];//instance method to create and intialise the stream

stream.movieSourceType = MPMovieSourceTypeStreaming;

stream.view.hidden = YES;
//[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
//[[AVAudioSession sharedInstance]setActive:YES error:nil];
//[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

self.player = stream;

[self.view addSubview:self.player.view];




}

如果有人能帮助我，那将是非常棒的。

谢谢！

修改

-(IBAction)playPressed:(id)sender{


MPMoviePlaybackState playbackState = [self.player playbackState];
NSMutableArray *items = [NSMutableArray arrayWithArray:[self.toolbar items]];
[self.toolbar setBackgroundImage:[UIImage new]
              forToolbarPosition:UIBarPositionAny
                      barMetrics:UIBarMetricsDefault];
[self.toolbar setShadowImage:[UIImage new]
          forToolbarPosition:UIToolbarPositionAny];

if (playbackState == MPMoviePlaybackStateStopped || playbackState == MPMoviePlaybackStatePaused){
    NSMutableArray *toolbarButtons = [self.toolbarItems mutableCopy];

    [toolbarButtons removeObject:self.pause];
    [self setToolbarItems:toolbarButtons animated:YES];
    [self.player prepareToPlay];
    if (![ toolbarButtons containsObject:self.pause]) {
        [toolbarButtons addObject:self.pause];
        [self setToolbarItems:toolbarButtons animated:YES];
         }

//this means that the player is not currently playing and that the toolbar is displaying the play button
    [self.player play];
    //NSMutableArray *toolbarButtons = [NSMutableArray arrayWithArray:[toolbar items]];
    //[toolbarButtons replaceObjectAtIndex:0 withObject:pause];
   // [toolbarButtons removeObject:play];
    //[items replaceObjectAtIndex:2 withObject:self.pause];
}
else if (playbackState == MPMoviePlaybackStatePlaying){
    NSMutableArray *toolbarButtons = [self.toolbarItems mutableCopy];
    [toolbarButtons removeObject:self.play];
    [self setToolbarItems:toolbarButtons animated:YES];

    if (![ toolbarButtons containsObject:self.play]) {
        [toolbarButtons addObject:self.play];
        [self setToolbarItems:toolbarButtons animated:YES];

    }
    [self.player pause];



}