所謂靜音岗憋，就是沒(méi)有聲音，把音量調(diào)到最小不就好了锚贱。所以仔戈，只要調(diào)節(jié)音量就行。那么惋鸥，這樣就很簡(jiǎn)單了杂穷，系統(tǒng)給我們提供了屬性啊。
在AVPlayer中卦绣，有屬性
@property (nonatomic) float volume NS_AVAILABLE(10_7, 7_0);
看注釋：
/* Indicates the current audio volume of the player; 0.0 means "silence all audio", 1.0 means "play at the full volume of the current item".
iOS note: Do not use this property to implement a volume slider for media playback. For that purpose, use MPVolumeView, which is customizable in appearance and provides standard media playback behaviors that users expect.
This property is most useful on iOS to control the volume of the AVPlayer relative to other audio output, not for volume control by end users. */
所以：
關(guān)： self.avPlayer.volume = 0.0;
開(kāi): self.avPlayer.volume = 1.0;
