Android的加速度感應器類比搖一搖的效果-android學習之旅(66)

Android的加速度感應器類比搖一搖的效果-android學習之旅(66)
主要介紹一下android的加速感應器的簡單用法,類比搖一搖 ,如果x,y,z三個方向的加速度超過了15,就會彈出Toast,當然你可以設定更複雜的策略,比如判斷間隔代碼如下

public class MainActivity extends Activity {    private SensorManager sensorManager;    private TextView textView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);        Sensor sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);        sensorManager.registerListener(sensorEventListener,sensor,SensorManager.SENSOR_DELAY_NORMAL);    }    private SensorEventListener sensorEventListener = new SensorEventListener() {        @Override        public void onSensorChanged(SensorEvent sensorEvent) {            float xValue = Math.abs(sensorEvent.values[0]);            float yValue = Math.abs(sensorEvent.values[1]);            float zvalue = Math.abs(sensorEvent.values[2]);            if (xValue > 15||yValue > 15||zvalue > 15){                Toast.makeText(MainActivity.this,搖一搖,Toast.LENGTH_LONG).show();            }        }        @Override        public void onAccuracyChanged(Sensor sensor, int i) {        }    };    @Override    protected void onDestroy() {        if (sensorManager != null){            sensorManager.unregisterListener(sensorEventListener);        }        super.onDestroy();    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.menu_main, menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        //noinspection SimplifiableIfStatement        if (id == R.id.action_settings) {            return true;        }        return super.onOptionsItemSelected(item);    }}