如何更改MPMoviePlayerViewController的视频网址？

Question

我正在使用Xcode 4.6.1（目标是iPad）为iOS 6开发

我想在用户滑动屏幕时更改视频网址。

这是我的ViewController.m文件：

#import "ViewController.h"

@interface experiencesViewController () {
    MPMoviePlayerViewController *playerViewController;
    MPMoviePlayerController *player;
}

@end

...

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    NSString *url = [[NSBundle mainBundle] pathForResource:"video" ofType:@"mp4"];

    playerViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:url]];

    player = [playerViewController moviePlayer];
    [player setMovieSourceType:MPMovieSourceTypeFile];
    player.fullscreen = YES;

    [player play];

    ...

}

...

现在，我想在滑动事件中更改视频。我试过这样做：

- (IBAction)didSwipeLeft:(UITapGestureRecognizer *)recognizer {
    NSLog(@"Left");

    player.movieSourceType = MPMovieSourceTypeFile;
    player.contentURL = [NSURL URLWithString:@"video2.mp4"];

    [player prepareToPlay];
    [player play];
}

然而，这不起作用。视频停止播放，之后没有任何反应。任何帮助都将受到高度赞赏。

谢谢：）

Answer 1

删除[播放器播放]因为视频尚未准备好播放。