在 Android 中组合多个传感器时的值相同

Question

我想同步加速度计和陀螺仪传感器。我为它制作了一个 Android 应用程序，并将传感器的值插入到数据库中。我试过这段代码 sn-p 但它给出了相同值的重复。

 @Override
    protected void onCreate(Bundle savedInstanceState) {

         private boolean isGyroscopeSensorPresent = false;
         private boolean isAccelerometerSensorPresent = false;

        //sensor gyroscope
        if(sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE) != null) {
            gyroscope = sensorManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
            isGyroscopeSensorPresent = true;
        } else {
            isGyroscopeSensorPresent = false;
        }

        //sensor accelerometer
        if(sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER) != null) {
            accelerometer = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
            isAccelerometerSensorPresent = true;
        } else {
            isAccelerometerSensorPresent = false;
        }
    }

    @Override
    public void onSensorChanged(SensorEvent event) {

        Sensor sensor = event.sensor;

        if (sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
            x_axis = event.values[0];
            y_axis = event.values[1];
            z_axis = event.values[2];
        } if (sensor.getType() == Sensor.TYPE_GYROSCOPE) {
            gyro_x_axis = event.values[0];
            gyro_y_axis = event.values[1];
            gyro_z_axis = event.values[2];
        }
        if (isAccelerometerSensorPresent && isGyroscopeSensorPresent){
             mDBHelper.insert(x_axis, y_axis, z_axis, gyro_x_axis, gyro_y_axis, gyro_z_axis, time_gyro, subject, alphabet);
        }
    }

database output

如何解决这个重复值问题？我只想创建一个用橙色写的值的数据库，如图所示（如果你注意用橙色写的值不重复）。如果您能提供帮助，我会很高兴。

谢谢。

Answer 1

即使值没有变化（例如桌面上的设备未被触摸），传感器也可能会在一段时间内报告，因此请在您身边检查

@Override
public void onSensorChanged(SensorEvent event) {
    Sensor sensor = event.sensor;

    float x_axis = this.x_axis, y_axis = this.y_axis, z_axis = this.z_axis;
    if (sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
        x_axis = event.values[0];
        y_axis = event.values[1];
        z_axis = event.values[2];
    }

    float gyro_x_axis = this.gyro_x_axis, gyro_y_axis = this.gyro_y_axis,
        gyro_z_axis = this.gyro_z_axis;
    if (sensor.getType() == Sensor.TYPE_GYROSCOPE) {
        gyro_x_axis = event.values[0];
        gyro_y_axis = event.values[1];
        gyro_z_axis = event.values[2];
    }

    boolean exaclySame = this.x_axis == x_axis &&
            this.y_axis == y_axis &&
            this.z_axis == z_axis &&
            this.gyro_x_axis == gyro_x_axis &&
            this.gyro_y_axis == gyro_y_axis &&
            this.gyro_y_axis == gyro_z_axis;

    if (isAccelerometerSensorPresent && isGyroscopeSensorPresent && !exaclySame){
         this.x_axis = x_axis;
         this.y_axis = y_axis;
         this.z_axis = z_axis;
         this.gyro_x_axis = gyro_x_axis;
         this.gyro_y_axis = gyro_y_axis;
         this.gyro_z_axis = gyro_z_axis;

         mDBHelper.insert(x_axis, y_axis, z_axis, gyro_x_axis, gyro_y_axis, gyro_z_axis, time_gyro, subject, alphabet);
    }
}

在例如this.x_axis == x_axis line this.x_axis 指在类中声明的变量，x_axis 指本地变量（在方法中声明）