Android计步器 [英] Android step counter

问题描述

我正在尝试制作一个简单的Android应用程序来计算步骤.当我运行应用程序时，onResume方法中将调用else，这意味着它没有找到传感器.我正在2016年运行Api 22的Samsung J3上进行测试，我想知道代码中的问题还是手机没有传感器.如果是手机，是否有解决方法?

I am trying to make a simple Android application to count steps. When I run the application the else is called in the onResume method meaning it did not find the sensor. I am testing on a 2016 Samsung J3 running Api 22. I am wondering is the problem in my code or is it that the phone does not have the sensor. If it is the phone is there a workaround for it?

public class MainActivity extends AppCompatActivity implements SensorEventListener
{

private TextView counterTextView;

private SensorManager sensorManager;

private boolean isWalking;


@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    counterTextView = findViewById(R.id.counterTextView);
    sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
}

@Override
protected void onResume()
{
    super.onResume();
    isWalking = true;
    Sensor countSensor = sensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER);
    if(countSensor != null)
    {
        sensorManager.registerListener(this, countSensor, SensorManager.SENSOR_DELAY_UI);
    }
    else
    {
        counterTextView.setText("WARNING SENSOR NOT FOUND");
    }

}

@Override
protected void onPause()
{
    super.onPause();
    isWalking = false;
}

@Override
public void onSensorChanged(SensorEvent event)
{
    if(isWalking)
    {
        counterTextView.setText(String.valueOf(event.values[0]));
    }
}

@Override
public void onAccuracyChanged(Sensor sensor, int accuracy)
{

}
}

推荐答案

对于与我处境相同的任何人，它都是我正在使用的设备.如果要使用所有设备，则可以使用加速度计.

For anyone in the same situation as me, it was the device I was using. If you want to work with all devices you can use the accelerometer.

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