iphone开发如何用代码设置视频播放器的音量

iOS视频播放初始化

最新推荐文章于 2025-05-12 15:27:30 发布

最新推荐文章于 2025-05-12 15:27:30 发布 · 116 阅读

本文介绍了一个iOS应用中视频播放器的初始化过程，包括注册播放结束和预加载完成的通知、设置音量、准备并开始播放视频。

NSURL *videoURL = [NSURL fileURLWithPath:selectedQuestion.GraphicsUrl];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePlayBackDidFinish:)
name:MPMoviePlayerPlaybackDidFinishNotification object:nil];

// Register to receive a notification that the movie is now in memory and ready to play
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePreloadDidFinish:)
name:MPMoviePlayerLoadStateDidChangeNotification object:nil];

videoPlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:videoURL];

[[MPMusicPlayerController applicationMusicPlayer] setVolume:1.0];

MPMoviePlayerController *moviePlayer = [videoPlayer moviePlayer];
[moviePlayer prepareToPlay];
[moviePlayer play];

videoPlayer.view.frame = imgQuestion.frame;

[videoView addSubview:videoPlayer.view];

注意：这个方法在真机上测试没有问题，但是在模拟器上不能成功。