如何以編程方式在iPhone中靜音實時流式視頻

Question

我正在使用AVPlayer在iPhone中播放實時流式視頻。我想關閉播放器的音量（以編程方式）。我試過這個http://developer.apple.com/library/ios/#qa/qa1716/_index.html。但它不適用於我的情況。

AVURLAsset *asset = [AVURLAsset URLAssetWithURL:[self myAssetURL] options:nil]; 
NSArray *audioTracks = [asset tracksWithMediaType:AVMediaTypeAudio]; 

// Mute all the audio tracks 
NSMutableArray *allAudioParams = [NSMutableArray array]; 
for (AVAssetTrack *track in audioTracks) { 
    AVMutableAudioMixInputParameters *audioInputParams =[AVMutableAudioMixInputParameters audioMixInputParameters]; 
    [audioInputParams setVolume:0.0 atTime:kCMTimeZero]; 
    [audioInputParams setTrackID:[track trackID]]; 
    [allAudioParams addObject:audioInputParams]; 
} 
AVMutableAudioMix *audioZeroMix = [AVMutableAudioMix audioMix]; 
[audioZeroMix setInputParameters:allAudioParams]; 

// Create a player item 
AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:asset]; 
[playerItem setAudioMix:audioZeroMix]; // Mute the player item 

// Create a new Player, and set the player to use the player item 
// with the muted audio mix 
AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem]; 

// assign player object to an instance variable 
self.mPlayer = player; 

// play the muted audio 
[mPlayer play]; 

請爲此建議任何解決方案。 謝謝

Answer 1

您可以使用MPVolumeView class，available [here]。它有一個音量控制滑塊，適用於HTTP Live Streams。（http://developer.apple.com/library/ios/#documentation/mediaplayer/reference/MPVolumeView_Class/Reference/Reference.html）