# wx.onCompassChange(function callback)

with Promise style call: Not supported

Mini Program plugin: Not supported

Monitor compass data changes. Frequency: 5 second/Seconds, the interface will automatically start listening after the call, you can use the wx.stopCompass Stop listening.

# parameter

# function callback

Callback function for compass data change events

# parameter

# Object object

attribute	type	Introductions	Minimum version
direction	number	Degree of direction faced
accuracy	number/string	accuracy	2.4.0

# sample code


wx.onCompassChange(callback)

# accuracy in iOS/Android Difference

Due to platform differences, accuracy in iOS/Android Has different values.

iOS：accuracy It's a... number Represents a deviation from the magnetic north pole. 0 Indicates device pointing magnetic north, 90 It points east, 180. Point south, and so on.
Android：accuracy It's a... string Is an enumerated value of the.

value	Introductions
high	high precision
medium	Medium precision
low	Low precision
no-contact	Untrusted. Sensor lost connection.
unreliable	Not credible, reason unknown
unknow ${value}	An unknown precision enumeration value, that is, the Android Representing the precision returned by the system at this time value Is not a standard precision enumeration value