android.media.AudioTrack#setVolume ( )源码实例Demo

@TargetApi(21)
private static void setVolumeInternalV21(AudioTrack audioTrack, float volume) {
  audioTrack.setVolume(volume);
}
 

@TargetApi(21)
private static void setVolumeInternalV21(AudioTrack audioTrack, float volume) {
  audioTrack.setVolume(volume);
}
 

@TargetApi(21)
private static void setVolumeInternalV21(AudioTrack audioTrack, float volume) {
  audioTrack.setVolume(volume);
}
 

@Override
public void onCompleted() {
    // create a new AudioTrack to workaround audio routing issues.
    AudioTrack audioTrack = new AudioTrack.Builder()
            .setAudioFormat(mAudioOutputFormat)
            .setBufferSizeInBytes(mAudioOutputBufferSize)
            .setTransferMode(AudioTrack.MODE_STREAM)
            .build();
    if (mAudioOutputDevice != null) {
        audioTrack.setPreferredDevice(mAudioOutputDevice);
    }
    audioTrack.setVolume(AudioTrack.getMaxVolume() * mVolume / 100.0f);
    audioTrack.play();
    mConversationHandler.post(new Runnable() {
        @Override
        public void run() {
            mConversationCallback.onResponseStarted();
        }
    });
    for (ByteBuffer audioData : mAssistantResponses) {
        final ByteBuffer buf = audioData;
        mConversationHandler.post(new Runnable() {
            @Override
            public void run() {
                mConversationCallback.onAudioSample(buf);
            }
        });
        audioTrack.write(buf, buf.remaining(),
                AudioTrack.WRITE_BLOCKING);
    }
    mAssistantResponses.clear();
    audioTrack.stop();
    audioTrack.release();

    mConversationHandler.post(new Runnable() {
        @Override
        public void run() {
            mConversationCallback.onResponseFinished();
        }
    });
    if (mMicrophoneMode == MicrophoneMode.DIALOG_FOLLOW_ON) {
        // Automatically start a new request
        startConversation();
    } else {
        // The conversation is done
        mConversationHandler.post(new Runnable() {
            @Override
            public void run() {
                mConversationCallback.onConversationFinished();
            }
        });
    }
}
 

@TargetApi(21)
private static void setVolumeInternalV21(AudioTrack audioTrack, float volume) {
  audioTrack.setVolume(volume);
}
 

@TargetApi(21)
private static void setVolumeInternalV21(AudioTrack audioTrack, float volume) {
  audioTrack.setVolume(volume);
}