Android中怎样使用计步器传感器 "TYPE_STEP_DETECTOR"

在Android 4.4以后的版本已经可以直接支持计步器sensor，参考下面的文章。

http://developer.android.com/about/versions/android-4.4.html#UserInput

http://motzcod.es/post/82515321689/part-1-my-stepcounter-android-step-sensors

http://baroqueworksdev.blogspot.com/2013/12/how-to-use-sensor-of-typestepdetector.html

Initialize Sensor

We have to get a Sensor's Object from SensorManager.
Set the type "Sensor.TYPE_STEP_DETECTOR".

public class StepCounterActivity extends Activity {    private SensorManager mSensorManager;    private Sensor mStepSensor;    private TextView mTextView;     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);         mTextView = (TextView) findViewById(R.id.text_step);         mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);        mStepSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR);     }     protected void onResume() {        super.onResume();        mSensorManager.registerListener(mSensorEventListener, mStepSensor,                SensorManager.SENSOR_DELAY_NORMAL);    }     protected void onPause() {        super.onPause();        mSensorManager.unregisterListener(mSensorEventListener);    }

Create a SensorListener

We can get a trigger from onSensorChanged.

private SensorEventListener mSensorEventListener = new SensorEventListener() {    private int mStep;     @Override    public void onAccuracyChanged(Sensor sensor, int accuracy) {     }     @Override    public void onSensorChanged(SensorEvent event) {        if (event.values[0] == 1.0f) {            mStep++;        }        mTextView.setText(Integer.toString(mStep));    }};