RTEditor/src/main/java/com/onegravity/rteditor/RTManager.java
@Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
    public void onEventMainThread(MediaEvent event) {
        RTEditText editor = mEditors.get(mActiveEditor);
        RTMedia media = event.getMedia();
        if (editor != null && media instanceof RTImage) {
            insertImage(editor, (RTImage) media);
            EventBus.getDefault().removeStickyEvent(event);
            mActiveEditor = Integer.MAX_VALUE;
        }
    }
@Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
    public void onEventMainThread(MediaEvent event) {
        RTEditText editor = mEditors.get(mActiveEditor);
        RTMedia media = event.getMedia();
        if (editor != null && media instanceof RTImage) {
            insertImage(editor, (RTImage) media);
            EventBus.getDefault().removeStickyEvent(event);
            mActiveEditor = Integer.MAX_VALUE;
        }
    }
Media file was picked -> process the result.