ios - MPMoviePlayerViewController 不播放

Question

我会保持简单，代码如下：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
VideoEntry *entry = [videoEntries objectAtIndex:indexPath.row];

[HCYoutubeParser h264videosWithYoutubeURL:[NSURL URLWithString:entry.url] completeBlock:^(NSDictionary *videoDictionary, NSError *error) {
    NSArray *urls = [videoDictionary allValues];
    NSURL *url = [NSURL URLWithString:[urls objectAtIndex:0]];
    [mp.moviePlayer setAllowsAirPlay:YES];
    [mp.moviePlayer setContentURL:url];
    [mp.moviePlayer prepareToPlay];
    [mp.moviePlayer play];
    [self presentMoviePlayerViewControllerAnimated:mp];
}];

}

mp 是一个 MPMoviePlayerViewController。显示了视图控制器，但电影没有开始，它只是说“正在加载...”，在你问之前我 100% 确定链接有效。

谢谢！

Answer 1

它不起作用，因为没有在主线程上调用完成块。您可以通过强制在主线程上执行代码来解决：

[HCYoutubeParser h264videosWithYoutubeURL:[NSURL URLWithString:entry.url]
                            completeBlock:^(NSDictionary *videoDictionary, NSError *error) {
    dispatch_async(dispatch_get_main_queue(), ^(void) {
        NSArray *urls = [videoDictionary allValues];
        NSURL *url = [NSURL URLWithString:[urls objectAtIndex:0]];
        [mp.moviePlayer setAllowsAirPlay:YES];
        [mp.moviePlayer setContentURL:url];
        [mp.moviePlayer prepareToPlay];
        [mp.moviePlayer play];
        [self presentMoviePlayerViewControllerAnimated:mp];
    });
}];