我对 android 上的计步器传感器有疑问答案

【问题标题】：I have a question about step counter sensor on android我对 android 上的计步器传感器有疑问
【发布时间】：2021-07-29 14:44:41
【问题描述】：

我正在研究 android 传感器，我正在尝试基于软件的计步器传感器，但它不是从 0 开始，而是从 512 继续，我可以理解它写了每日步数作为原因，但是当我要制作计步器应用程序时，如何将其设置为从0开始计数？

class MainActivity : AppCompatActivity() , SensorEventListener {

    private lateinit var  sensorManager : SensorManager

    private lateinit var  step_sensor : Sensor

    lateinit var txt : TextView

    override fun onCreate(savedInstanceState : Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        sensorManager = getSystemService(Context.SENSOR_SERVICE) as SensorManager

        step_sensor = sensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER)

        txt = findViewById(R.id.text1)

    }

    override fun onResume() {
        super.onResume()

        sensorManager.registerListener( this , step_sensor , SensorManager.SENSOR_DELAY_NORMAL)
    }

    override fun onSensorChanged(event : SensorEvent?) {

        txt.text = event?.values?.get(0).toString()
    }

    override fun onAccuracyChanged(sensor : Sensor?, accuracy : Int) {

        if (sensor == step_sensor ) {

            when (accuracy) {

                SensorManager.SENSOR_STATUS_ACCURACY_HIGH -> {

                        Toast.makeText(this,"Sensör yüksek doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }

                SensorManager.SENSOR_STATUS_ACCURACY_MEDIUM -> {

                        Toast.makeText(this,"Sensör orta doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }

                SensorManager.SENSOR_STATUS_ACCURACY_LOW -> {

                        Toast.makeText(this,"Sensör düşük doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }

                SensorManager.SENSOR_STATUS_UNRELIABLE -> {

                        Toast.makeText(this,"Sensör çok düşük doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }
            }
        }
    }

    override fun onPause() {
        super.onPause()

        sensorManager.unregisterListener( this )
    }

}

【问题讨论】：

如果你想显示一个从 0 开始的数字，那么只需存储你希望它开始计数时的初始值，然后从每个新值中减去它（在同一天）在显示之前。
@GenerousBadger 对不起，我没听懂，你能不能描述得更详细些？
如果你从 API 得到的数字是 512, 513, 514, ... 但你想显示 0, 1, 2, ... 那么只需记住（存储）第一个数字 ( 512）某处并在显示之前减去每次出现的数字。
现在我明白了，谢谢，但我不知道该怎么做，但你在我的脑海中创造了一些想法，我会以某种方式处理它，谢谢

标签： android-studio kotlin android-sensors

【解决方案1】：

由于计步器传感器只有一个值，我找到了如下解决方案。我可能找到了临时解决方案

class MainActivity : AppCompatActivity() , SensorEventListener {

    private lateinit var  sensorManager : SensorManager

    private lateinit var  step_detector : Sensor

    var step = -1

    lateinit var txt : TextView

    override fun onCreate(savedInstanceState : Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        sensorManager = getSystemService(Context.SENSOR_SERVICE) as SensorManager

        step_detector = sensorManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR)

        txt = findViewById(R.id.text1)
    }

    override fun onResume() {
        super.onResume()

        sensorManager.registerListener( this , step_detector , SensorManager.SENSOR_DELAY_NORMAL)
    }

    override fun onSensorChanged(event : SensorEvent?) {

        if ( event?.sensor == step_detector ) {

            step ++
        }

        txt.text = step.toString()
    }

    override fun onAccuracyChanged(sensor : Sensor?, accuracy : Int) {

        if (sensor == step_detector ) {

            when (accuracy) {

                SensorManager.SENSOR_STATUS_ACCURACY_HIGH -> {

                        Toast.makeText(this,"Sensör yüksek doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }

                SensorManager.SENSOR_STATUS_ACCURACY_MEDIUM -> {

                        Toast.makeText(this,"Sensör orta doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }

                SensorManager.SENSOR_STATUS_ACCURACY_LOW -> {

                        Toast.makeText(this,"Sensör düşük doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }

                SensorManager.SENSOR_STATUS_UNRELIABLE -> {

                        Toast.makeText(this,"Sensör çok düşük doğrulukta çalışmaktadır ." , Toast.LENGTH_SHORT).show()
                }
            }
        }
    }

    override fun onPause() {
        super.onPause()

        sensorManager.unregisterListener( this )
    }

}

【讨论】：