Table of Contents

MegaTracker sensor external control

By default, MegaTracker automatically manages the listening interfaces for accelerometer and GNSS data. However, in certain complex application scenarios, developers may need to manually control the activation and deactivation of these interfaces to achieve more refined power management or permission control.

Before you begin

External control constraint logic

When creating a session MegaTrackerConfigs, you can configure the sensor listening interfaces via MegaTrackerSensorOptions.

Parameter Type Default Description
isAcceExternalControl boolean false Whether the accelerometer is controlled externally (by the developer).
isGeoExternalControl boolean false Whether GNSS data is controlled externally (by the developer).
Tip

Applicable scenarios: If your application does not directly subscribe to sensor data apart from Mega functionality, it is recommended to keep the default value false and let Mega handle it automatically.

When the above parameters are set to true, developers must strictly adhere to the following calling sequence:

  • Startup process

Before calling start(options), ensure that the corresponding sensor listening is manually activated:

After calling stop(), you can deactivate the corresponding sensor listening:

Caution

Conflict warning: If set to false (Mega-managed), do not call the native WeChat sensor deactivation interfaces during the session runtime, as this will cause data interruption.

const megaTrackerSensorOptions: easyar.MegaTrackerSensorOptions = {  
    isAcceExternalControl: false,  
    isGeoExternalControl: true  
};  
const megaTrackerConfigs: easyar.MegaTrackerConfigs = {  
    access: apiKeyAccess,  
    options: megaTrackerSensorOptions  
};  

session = megaComponent.createSession(megaTrackerConfigs);

This example demonstrates how to externally control the activation and deactivation of WeChat location data listening. Before calling start(options), you need to call wx.startLocationUpdate to activate WeChat location data listening.