loadState

加载状态

描述

说明视频当前加载状态，如加载中，加载完成等

声明

typedef NS_OPTIONS(NSUInteger, MPMovieLoadState) {
    MPMovieLoadStateUnknown        = 0,
    MPMovieLoadStatePlayable       = 1 << 0,
    MPMovieLoadStatePlaythroughOK  = 1 << 1,
    MPMovieLoadStateStalled        = 1 << 2,
};

变量

• MPMovieLoadStateUnknown - 加载情况未知
• MPMovieLoadStatePlayable - 加载完成，可以播放
• MPMovieLoadStatePlaythroughOK - 加载完成，如果shouldAutoPlay为YES，将自动开始播放
• MPMovieLoadStateStalled - 加载中

说明

• 通过loadState属性(只读)获取当前加载状态
• 当接收到MPMoviePlayerLoadStateDidChangeNotification通知时应调用loadState获取一下当前播放器的加载状态；

示例代码

if (MPMoviePlayerLoadStateDidChangeNotification ==  notify.name) {
    NSLog(@"player load state: %ld", (long)_player.loadState);
    if (MPMovieLoadStateStalled & _player.loadState) {
        stat.text = [NSString stringWithFormat:@"player start caching"];
        NSLog(@"player start caching");
    }
        
    if (_player.bufferEmptyCount &&
        (MPMovieLoadStatePlayable & _player.loadState ||
         MPMovieLoadStatePlaythroughOK & _player.loadState)){
            NSLog(@"player finish caching");
            NSString *message = [[NSString alloc]initWithFormat:@"loading occurs, %d - %0.3fs",
                                 (int)_player.bufferEmptyCount,
                                 _player.bufferEmptyDuration];
            [self toast:message];
    }
}