问题描述
所以在我的应用程序，我想通过使用硬件按钮更改应用程序音量报警，但每当我使用按钮来打开或关闭音量，它只改变铃声音量不影响我的应用程序音量。
So in my app i would like to change the in app volume leves for an alarm by the use of the hardware buttons but whenever i use the buttons to turn up or down the volume it ONLY changes the "ringer" volume wich does NOT effect my in app volume.
在设置 - >声音下，更改按钮开关是开的，一切正常，如果我关闭它，但大多数用户也想要打开。所以当我在我的应用程序，我想要音量按钮更改应用程序音量而不是铃声音量。
Under Settings -> Sounds the "change with buttons" switch is ON and everything works fine if i turn it off but most users will want to have it on as well. So when im in my app i want the volume buttons to change the app volume not the ringer volume.
希望它有意义
感谢
推荐答案
默认情况下，硬件按钮会更改闹钟音量，除非您有一个打开的音频会话使用按钮。我建议打开一个AVAudioSession让他们改变它，或者在你的应用程序中放置一个卷滑块，让他们改变音量。
By default the hardware buttons will change the alarm volume unless you have an open audio session when they use the buttons. I would recommend opening an AVAudioSession to have them change it or placing a volume slider somewhere in your app to have them change the volume.
这是一个很难解决的问题因为用户没有被告知什么是错误，很多时候看不到看到的铃声音量是什么正在改变。
This is a difficult problem to solve perfectly because users aren't told what is wrong and many times don't look to see that the ringer volume is what is being changed.
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