位置传感器的组成及使用方法

 1 //位置传感器：邻近传感器：
 2 public class MainActivity extends Activity implements SensorEventListener {
 3     private TextView tView;
 4     private SensorManager sManager;
 5 
 6     @Override
 7     protected void onCreate(Bundle savedInstanceState) {
 8         super.onCreate(savedInstanceState);
 9         setContentView(R.layout.fragment_main);
10         tView = (TextView) findViewById(R.id.tv);
11         sManager = (SensorManager) getSystemService(SENSOR_SERVICE);
12 
13     }
14 
15     // 传感器数据变化
16     @Override
17     public void onSensorChanged(SensorEvent event) {
18         // TODO Auto-generated method stub
19         switch (event.sensor.getType()) {
20 
21         // 邻近传感器 --单位cm
22         case Sensor.TYPE_PROXIMITY:
23 
24             tView.setText(String.valueOf(event.values[0]));
25             break;
26 
27         default:
28             break;
29         }
30     }
31 
32     // 传感器精度变化
33     @Override
34     public void onAccuracyChanged(Sensor sensor, int accuracy) {
35         // TODO Auto-generated method stub
36 
37     }
38 
39     @Override
40     protected void onResume() {
41         // TODO Auto-generated method stub
42         super.onResume();
43         // 注册传感器
44 
45         // 邻近传感器
46         sManager.registerListener(this,
47                 sManager.getDefaultSensor(Sensor.TYPE_PROXIMITY),
48                 SensorManager.SENSOR_DELAY_UI);
49     }
50 
51     @Override
52     protected void onPause() {
53         // TODO Auto-generated method stub
54         super.onPause();
55         // 不在截获传感器数据
56         sManager.unregisterListener(this);
57 
58     }
59 
60 }