harmony 鸿蒙Device Status Awareness Error Codes

Device Status Awareness Error Codes

NOTE

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

Error Message

Service exception.

Symptom

This error code is reported if a service exception occurs when the on or off API of the deviceStatus 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.

Error Message

Subscribe Failed.

Symptom

This error code is reported if subscription fails when the on API of the deviceStatus 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.

Error Message

UnSubscribe Failed.

Symptom

This error code is reported if unsubscription fails when the off API of the deviceStatus 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.