static int SetBuffersGeometry(int width, int height, int format);
static int android_printf(const char *format, ...);
static int GetBatteryLevel();
static bool StartActivity(const std::string &package, const std::string &intent = std::string(), const std::string &dataType = std::string(), const std::string &dataURI = std::string());
static int SetBuffersGeometry(int width, int height, int format);
static int android_printf(const char *format, ...);
static int GetBatteryLevel();
static bool StartActivity(const std::string &package, const std::string &intent = std::string(), const std::string &dataType = std::string(), const std::string &dataURI = std::string());