start
Starts or resumes the active operation of this control.
This typically involves starting content playback, animations, data fetching, or making the control visually active. If the control was previously #stop() stopped, this method should resume its operation. Calling start()} on an already started control should ideally be a no-op or handle resumption gracefully.
This method might be called automatically after #initialize(Module) if #isAutoStart() is true, or explicitly by the player system.
Starts the WebView by loading the appropriate content.If a web application is specified (this.webApp != null), it loads "https://appassets.androidplatform.net/index.html". Otherwise, if HTML content is provided (this.html is not empty), it loads the HTML data directly. If neither a web application nor HTML content is available, it loads the URL specified in this.url.
If a refresh interval is set (this.refreshInterval >0), it schedules a periodic reload of the WebView content using a Handler and Runnable.