如何將系統卷與系統卷分開設置(iOS設備卷物理鍵)? [英]How to set app volume separately from system volume ( iOS device volume physical keys )?
如何通過iPhone中的側面音量控制按鈕使用系統聲音服務控制文件播放的音量 [英]How to control volumes of file playing using System Sound Services by side volume control buttons in iPhone
對於iPad或iPhone,如何控制系統音量? 例如,有一個使所有音頻靜音的按鈕 [英]For the iPad or iPhone, how do you control the system Volume? For example, have a button that mutes all audio