How To Display 2 Barvisualizers?

I am using the library audio-visualizer-android. I am getting BarVisualizer from the constructor of my class and use the following code to display the BarVisualizer: int audioSessi

Solution 1:

This is an issue that should be raised with the library author(s), as it doesn't support multiple visualizers attached to the same audio session.

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But you can hack in that functionality by extending BarVisualizer and using that new class everywhere as a replacement:

publicclassCopyBarVisualizerextendsBarVisualizer {
    private List<UpdateListener> listeners = newArrayList<>();

    publicCopyBarVisualizer(Context context) {
        super(context);
    }

    publicCopyBarVisualizer(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    publicCopyBarVisualizer(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    publicvoidaddUpdateListener(UpdateListener listener) {
        listeners.add(listener);
    }

    publicvoidcopyFrom(CopyBarVisualizer other) {
        other.addUpdateListener(newUpdateListener() {
            @Overridepublicvoidupdate(byte[] data) {
                mRawAudioBytes = data;
                CopyBarVisualizer.this.invalidate();
            }
        });
    }

    @Overridepublicvoidinvalidate() {
        super.invalidate();
        for (UpdateListener listener : listeners) {
            listener.update(mRawAudioBytes);
        }
    }

    publicinterfaceUpdateListener {
        voidupdate(byte[] data);
    }
}

Then initialize like this:

copyVisualizer.setAudioSessionId(audioSessionId);
copyVisualizer2.copyFrom(copyVisualizer);