加速度传感器

来源：互联网发布：软件系统业务需求编辑：程序博客网时间：2024/05/02 01:39
这里写图片描述
public class MainActivity extends AppCompatActivity {    private SensorManager sensorManager;    private SensorEventListener listener;    private Sensor sensor;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);        sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);        listener = new SensorEventListener() {            @Override            public void onSensorChanged(SensorEvent event) {                // 加速度可能会是负值，所以要取它们的绝对值                float xValue = Math.abs(event.values[0]);                float yValue = Math.abs(event.values[1]);                float zValue = Math.abs(event.values[2]);                if(xValue>15||yValue>15||zValue>15){                    Toast.makeText(MainActivity.this, "摇一摇", Toast.LENGTH_SHORT).show();                }            }            @Override            public void onAccuracyChanged(Sensor sensor, int accuracy) {            }        };        sensorManager.registerListener(listener, sensor,SensorManager.SENSOR_DELAY_NORMAL);    }    @Override    protected void onDestroy() {        super.onDestroy();        if(sensorManager!=null){            // 注销监听器            sensorManager.unregisterListener(listener);        }    }}
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