Microphone BufferReady事件处理程序无法进入windows phone 8应用程序

Question

我在Windows Phone 8应用中有以下代码：

        FrameworkDispatcher.Update();
        microphone = Microphone.Default;
        microphone.BufferReady += Device_BufferReady;
        bStarted = true;
        tbData.Text = "00:00:00";
        m_lDuration = 0;
        microphone.BufferDuration = TimeSpan.FromMilliseconds(100);
        baBuffer = new byte[microphone.GetSampleSizeInBytes(microphone.BufferDuration)];
        microphone.Start();

然而，Device_BufferReady永远不会被击中！你知道我做错了什么吗？

Answer 1

开发中心(http://code.msdn.microsoft.com/wpapps/Microphone-Sample-b2ebe8b6)提供的示例代码使用了一个周期为33ms的滚动条，您可以从中调用FrameworkDispatcher.Update()方法...

        // Timer to simulate the XNA Framework game loop (Microphone is 
        // from the XNA Framework). We also use this timer to monitor the 
        // state of audio playback so we can update the UI appropriately.
        DispatcherTimer dt = new DispatcherTimer();
        dt.Interval = TimeSpan.FromMilliseconds(33);
        dt.Tick += delegate { try { FrameworkDispatcher.Update(); } catch { } };
        dt.Start();

这是你实现的吗？