Merge pull request #118 from AgoraIO/fix/custom-audio-render

fix custom audio render

Author: plutoless

iOS/APIExample/Examples/Advanced/CustomAudioRender/CustomAudioRender.swift

@@ -72,7 +72,8 @@ class CustomAudioRenderMain: BaseViewController {
         exAudio.setupExternalAudio(withAgoraKit: agoraKit, sampleRate: UInt32(sampleRate), channels: UInt32(channel), audioCRMode: .sdkCaptureExterRender, ioType: .remoteIO)
         // important!! this example is using onPlaybackAudioFrame to do custom rendering
         // by default the audio output will still be processed by SDK hence below api call is mandatory to disable that behavior
-        agoraKit.setParameters("{\"che.audio.external_render\": false}")
+        agoraKit.setParameters("{\"che.audio.external_render\": true}")
+        agoraKit.setParameters("{\"che.audio.keep.audiosession\": true}")