SystemAPI

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Please include in the article which platforms are able to run this code example.

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Article

Created: Diego Soares Lopes (09 Feb 2009)

Last edited: hamishwillee (06 May 2013)

Overview

The SystemAPI was developed to facilitate access to informations about battery’s level and signal’s strength on Symbian OS devices, without the Symbian/C++ code conventions. It's very useful for Qt and OpenC/C++ programmers.

Header

 //SystemAPI header
#include "SystemAPI.h"
 
class Example: public SystemAPIObserver
  {
	public:
 
	/**
	 * C++ default constructor
	 */
	Example();
 
	/**
         * Example virtual destructor
	 */
	virtual ~Example();
 
	/**
	 * callback functions for receiving data events,
         * Inherited from SystemAPIObserver interface
         */
	void batteryLevelCheck(BatteryInfo battery, int err) ;
        void signalStatusCheck( SignalInfo signal, int err ); 
 
	private: //ATRIBUTES
 
        SystemAPI*  system; //Provide access to SystemAPI methods 
	BatteryInfo battery; //struct with battery info
	SignalInfo signal;   // struct with signal info
 
 
};

Source

//CPP FILE
 
//Example header file
#include "Example.h" 
 
Example::Example()
{
 	system = SystemAPI::create();
 
	system->notifyBatteryChange(this);
	system->notifySignalChange(this);
}
 
Example::~Example()
{
 
      if(system)
         {
               delete system; //delete system pointer
               system = NULL;
         }
}