Accelerometer

startAccelerometer

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The API usage is as follows: wx.startAccelerometer(Object object)

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Depending on the performance of the model, the current CPU and memory usage, the interval setting and the actual wx.onAccelerometerChange The execution frequency of the callback function will be slightly different

• Functional description: Start listening to acceleration data

• Parameters and descriptions: Object object。

  Properties	Type	Default value	Required	Description
  interval	string	normal	Yes	The execution frequency of the callback function for listening to acceleration data
  success	Function	-	No	Callback function for successful interface call
  fail	Function	-	No	Callback function for failed interface call
  complete	Function	-	No	Callback function for interface call completion (executed regardless of success or failure)

• The legal value of object.interval

  Value	Description
  game	The callback frequency suitable for updating the game is about 20ms/time
  ui	The callback frequency suitable for updating the UI is about 60ms/time
  normal	The normal callback frequency is about 200ms/time

• Sample code:

wx.startAccelerometer({
  interval: 'game'
})

stopAccelerometer

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The API usage is as follows: wx.stopAccelerometer(Object object)

• Functional description: Stop listening for acceleration data

• Parameters and descriptions: Object object。

  Properties	Type	Default value	Required	Description
  success	Function	-	No	Callback function for successful interface call
  fail	Function	-	No	Callback function for failed interface call
  complete	Function	-	No	Callback function for interface call completion (executed regardless of success or failure)

• Sample code:

wx.stopAccelerometer()

onAccelerometerChange

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The API usage is as follows: wx.onAccelerometerChange(function listener)

• Functional description: Listener for device orientation change events. Frequency based on wx.startAccelerometer() interval parameter. You can use wx.stopAccelerometer() Stops monitoring.

• Parameters and descriptions: function callback, The callback function of the acceleration data event. The parameters Object.res are as follows:

  Properties	Type	Description
  x	number	X axis
  y	number	Y axis
  z	number	Z axis

• Sample code:

wx.onAccelerometerChange(function (res) {
  console.log(res.x)
  console.log(res.y)
  console.log(res.z)
})

offAccelerometerChange

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The API usage is as follows: wx.offAccelerometerChange(function listener)

• Functional description: Remove the listener function of the acceleration data event

• Parameters and descriptions: function callback, The listener function passed in by onAccelerometerChange. If this parameter is not passed, all listeners will be removed

• Sample code:

const listener = function (res) { console.log(res) }

wx.onAccelerometerChange(listener)
wx.offAccelerometerChange(listener) // Pass the same function object used for listening.