Archived:Obtaining the number of sensors on a device using Symbian C++

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Archived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

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This code looks like it would still be valid using Symbian C++ on current versions

Article Metadata

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Tested with

Devices(s): Nokia N95 8GB

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Compatibility

Platform(s): S60 3rd Edition FP1

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Platform Security

Signing Required: Self-Signed

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Article

Keywords: CRRSensorApi, TRRSensorInfo, CRRSensorApi::FindSensorsL()

Created: tapiolaitinen (02 Apr 2008)

Last edited: hamishwillee (06 Aug 2012)

Overview

This snippet demonstrates how to obtain the number of available sensors on your device (for example, two on the Nokia N95 8GB: accelerometer sensor and rotation sensor).

Note: In order to use the code, you need to install the sensor plugin for your SDK.

MMP file

The following libraries are required:

LIBRARY RRSensorApi.lib

Source file

#include <RRSensorApi.h>

RArray<TRRSensorInfo> sensorList;
CleanupClosePushL(sensorList);
 
// Retrieve list of available sensors
CRRSensorApi::FindSensorsL(sensorList);
 
// Get number of sensors available
TInt sensorCount = sensorList.Count();
 
CleanupStack::PopAndDestroy();  // sensorList

Postconditions

The number of available sensors is obtained.