import('android.media.AudioManager')
audi = context:getSystemService('audio')

audiotype = {
    AudioManager.STREAM_ALARM,--手机闹铃的声音
    AudioManager.STREAM_MUSIC,--手机音乐的声音
    AudioManager.STREAM_NOTIFICATION,--系统提示的通知
    AudioManager.STREAM_RING,--电话铃声的声音
    AudioManager.STREAM_SYSTEM,--手机系统的声音
    AudioManager.STREAM_VOICE_CALL,--语音电话的声音
    AudioManager.STREAM_DTMF,--DTMF音调的声音
    --AudioManager.STREAM_BLUETOOTH_SCO,
}
yinl, yltype, qhkai = {}, 0, 0


for i = 1,#audiotype do
    yinl[i] = {}
    yinl[i].type = audiotype[i]
    yinl[i].min = audi:getStreamMinVolume(audiotype[i])
    yinl[i].max = audi:getStreamMaxVolume(audiotype[i])
    yinl[i].now = audi:getStreamVolume(audiotype[i])
end
function MonitorVolume(func)
    yinln = {}
    for i = 1,#audiotype do
        yinln[i] = {}
        yinln[i].type = audiotype[i]
        yinln[i].now = audi:getStreamVolume(audiotype[i])
        if yinln[i].now > yinl[i].now then
            yinl[i].now = yinln[i].now
            if yltype == 1 then
                yltype = 0
                func()
            end
          elseif yinln[i].now < yinl[i].now then
            yinl[i].now = yinln[i].now
            if yltype == 0 then
                yltype = 1
                func()
            end
        end
    end
end



MonitorVolume_Func = function()
    if qhkai == 0 then qhkai = 1
        VolumeRemove_Func()
      else qhkai = 0
        VolumeAdd_Func()
    end
end

VolumeAdd_Func = function()
toast('监测到音量键[加 +]状态')
end--VolumeAdd_Func

VolumeRemove_Func = function()
toast('监测到音量键[减 -]状态')

end--VolumeRemove_Func

while true do
    MonitorVolume(MonitorVolume_Func)
end