我创建了一个计步器服务,以使用Firebase作业分配器定期记录计步数。当我的应用程序运行并记录步数时,传感器事件正在运行,而当应用程序关闭时,它未记录。
如何在后台服务中侦听传感器事件?
class MyJobService : JobService(), SensorEventListener {
val TAG = "MyJobService"
var sensorManager: SensorManager? = null
var stepsSensor: Sensor? = null
override fun onStartJob(job: JobParameters): Boolean {
sensorManager = applicationContext.getSystemService(Context.SENSOR_SERVICE) as SensorManager
stepsSensor = sensorManager!!.getDefaultSensor(Sensor.TYPE_STEP_COUNTER)
if (stepsSensor != null) {
sensorManager!!.registerListener(this, stepsSensor, SensorManager.SENSOR_DELAY_FASTEST)
} else {
Log.e(TAG, "sensor not available")
}
return true // wait for sensor event
}
override fun onAccuracyChanged(theSensor: Sensor?, accuracy: Int) {
}
override fun onSensorChanged(event: SensorEvent?) {
val latestSensorCount = event!!.values[0].toLong()
Log.e(TAG, "Steps count $latestSensorCount") // works when App / activity is running
}
override fun onStopJob(job: JobParameters): Boolean {
return false
}
}
从主要活动中通过活动开始服务
val dispatcher = FirebaseJobDispatcher(GooglePlayDriver(this))
val myJob = dispatcher.newJobBuilder()
.setService(MyJobService::class.java)
.setTag("my-jobservice-tag")
.setRecurring(true)
.setTrigger(Trigger.executionWindow(10,20))
.setReplaceCurrent(true)
.build()
dispatcher.mustSchedule(myJob)
答案 0 :(得分:0)
如果您正在使用Android Pie在Android设备上进行测试
请通过Android Pie进行以下行为更改:
使用连续报告模式的传感器(例如加速度计和陀螺仪)不会接收事件。
希望这对您有帮助