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POcurrentPlaybackTime & NSTimer to launch views during a video and be correctly launched/relaunched when time point positioned with the scrubber
 

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  1. POcurrentPlaybackTime & NSTimer to launch views during a video and be correctly launched/relaunched when time point positioned with the scrubber
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    <p>Struggling here...</p> <p>I am trying to have views displayed during specific periods in a videos timeline, being replaced when the next view is triggered. This much I have managed to do - my problem is that this only happens in a linear fashion and if the playhead is moved back to a view that has already been triggered (ie anything prior to that point) the timer continues on, but the triggers are no longer firing.</p> <p>Any help will be greatly appreciated! Here's the code...</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; keyframeTimes = [[NSMutableArray alloc] init]; shoutOutTexts = [[NSArray arrayWithObjects:@"This is a test\nLabel at 2 secs ", @"This is a test\nLabel at 325 secs", nil] retain]; shoutOutTimes = [[NSArray arrayWithObjects:[[NSNumber alloc] initWithInt: 2], [[NSNumber alloc] initWithInt: 325], nil] retain]; self.player = [[MPMoviePlayerController alloc] init]; self.player.contentURL = [self movieURL]; // END:viewDidLoad1 self.player.view.frame = self.viewForMovie.bounds; self.player.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; [self.viewForMovie addSubview:player.view]; [self.player play]; // START_HIGHLIGHT [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(timerAction:) userInfo:nil repeats:YES]; // END_HIGHLIGHT // START:viewDidLoad1 [self.view addSubview:self.myScrollView]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieDurationAvailable:) name:MPMovieDurationAvailableNotification object:nil]; } // END:viewDidLoad // END:viewDidLoad1 // START:movieURL -(NSURL *)movieURL { NSBundle *bundle = [NSBundle mainBundle]; NSString *moviePath = [bundle pathForResource:@"BigBuckBunny_640x360" ofType:@"m4v"]; if (moviePath) { return [NSURL fileURLWithPath:moviePath]; } else { return nil; } } // END:movieURL int position = 0; - (void)timerAction:(NSTimer*)theTimer { NSLog(@"hi"); int count = [shoutOutTimes count]; NSLog(@"count is at %d", count); if (position &lt; count) { NSNumber *timeObj = [shoutOutTimes objectAtIndex:position]; int time = [timeObj intValue]; NSLog(@"time is at %d", time); if (self.player.currentPlaybackTime &gt;= time) { CommentView *cview = [[CommentView alloc] initWithText:[shoutOutTexts objectAtIndex:position]]; [self.player.view addSubview:cview]; position++; [NSTimer scheduledTimerWithTimeInterval:4.0f target:self selector:@selector(removeView:) userInfo:cview repeats:NO]; } } } - (void)removeView:(NSTimer*)theTimer { UIView *view = [theTimer userInfo]; [view removeFromSuperview]; } </code></pre> <p>Here's the log calls Till...</p> <p>Here's the log calls...</p> <pre><code>2011-04-23 11:53:44.370 MoviePlayer[17129:207] last check was at 7.76279 2011-04-23 11:53:44.371 MoviePlayer[17129:207] current playback time is 8.76292 2011-04-23 11:53:44.371 MoviePlayer[17129:207] shouting: This is a test Label at 2 secs 2011-04-23 11:53:45.368 MoviePlayer[17129:207] position is at 2 2011-04-23 11:53:45.369 MoviePlayer[17129:207] shout scheduled for 8 2011-04-23 11:53:45.370 MoviePlayer[17129:207] last check was at 8.76451 2011-04-23 11:53:45.371 MoviePlayer[17129:207] current playback time is 9.76299 </code></pre>
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