harmony 鸿蒙Motion Awareness Error Codes

2025-06-12
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Motion Awareness Error Codes

NOTE

This topic describes only module-specific error codes. For details about universal error codes, see Universal Error Codes.

31500001 Service Exception

Error Message

Service exception. Possible causes: 1. A system error, such as null pointer, container-related exception; 2. N-API invocation exception, invalid N-API status.

Symptom

This error code is reported if a service exception occurs when the on, off, or get API of the motion module is called.

Possible Causes

The service status is abnormal.

Solution

Retry the operation at a specified interval (for example, 1s) or at an exponential increase interval.
If the operation fails for three consecutive times, stop the retry. You can also attempt to obtain the sensor list to check for device availability.

31500002 Subscription Failed

Error Message

Subscription failed. Possible causes: 1. Callback registration failure; 2. Failed to bind native object to js wrapper; 3. N-API invocation exception, invalid N-API status; 4. IPC request exception.

Symptom

This error code is reported if subscription fails when the on API of the motion module is called.

Possible Causes

Subscription to change events has failed.

Solution

Retry the operation at a specified interval (for example, 1s) or at an exponential increase interval.
If the operation fails for three consecutive times, stop the retry.

31500003 Unsubscription Failed

Error Message

Unsubscription failed. Possible causes: 1. Callback failure; 2. N-API invocation exception, invalid N-API status; 3. IPC request exception.

Symptom

This error code is reported if unsubscription fails when the off API of the motion module is called.

Possible Causes

Unsubscription from change events has failed.

Solution

Retry the operation at a specified interval (for example, 1s) or at an exponential increase interval.
If the operation fails for three consecutive times, stop the retry.