手机方向和加速度传感器技术
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1.package cn.itcast.sensor;
2.
3.import android.app.Activity;
4.import android.hardware.Sensor;
5.import android.hardware.SensorEvent;
6.import android.hardware.SensorEventListener;
7.import android.hardware.SensorManager;
8.import android.os.Bundle;
9.import android.widget.TextView;
10.
11.public class MainActivity extends Activity {
12. private TextView accelerometerView;
13. private TextView orientationView;
14. private SensorManager sensorManager;
15. private MySensorEventListener sensorEventListener;
16. @Override
17. public void onCreate(Bundle savedInstanceState) {
18. super.onCreate(savedInstanceState);
19. setContentView(yout.main);
20.
21. sensorEventListener = new MySensorEventListener();
22. accelerometerView = (TextView) this.findViewById(R.id.a
ccelerometerView);
23. orientationView = (TextView) this.findViewById(R.id.ori
entationView);
24. //获取感应器管理器
25. sensorManager = (SensorManager) getSystemService(SENSOR
_SERVICE);
26. }
27. @Override
28. protected void onResume() {
29. Sensor orientationSensor = sensorManager.getDefaultSens
or(Sensor.TYPE_ORIENTATION);
30. sensorManager.registerListener(sensorEventListener, ori
entationSensor, SensorManager.SENSOR_DELAY_NORMAL);
31.
32. Sensor accelerometerSensor = sensorManager.getDefaultSe
nsor(Sensor.TYPE_ACCELEROMETER);
33. sensorManager.registerListener(sensorEventListener, acc
elerometerSensor, SensorManager.SENSOR_DELAY_NORMAL);
34. super.onResume();
35. }
36. private final class MySensorEventListener implements Sensor
EventListener{
37. @Override
38. public void onSensorChanged(SensorEvent event) {//可以
得到传感器实时测量出来的变化值
39. if(event.sensor.getType()==Sensor.TYPE_ORIENTATION)
{
40. float x = event.values[SensorManager.DATA_X];
41. float y = event.values[SensorManager.DATA_Y];
42. float z = event.values[SensorManager.DATA_Z];
43. orientationView.setText("Orientation: " + x + "
, " + y + ", " + z);
44. }else if(event.sensor.getType()==Sensor.TYPE_ACCELE
ROMETER){
45. float x = event.values[SensorManager.DATA_X];
46. float y = event.values[SensorManager.DATA_Y];
47. float z = event.values[SensorManager.DATA_Z];
48. accelerometerView.setText("Accelerometer: " + x
+ ", " + y + ", " + z);
49. }
50.
51. }
52. @Override
53. public void onAccuracyChanged(Sensor sensor, int accura
cy) {
54. }
55. }
56.
57. @Override
58. protected void onPause() {
59. sensorManager.unregisterListener(sensorEventListener);
60. super.onPause();
61. }
62.
63.
64.}
2：
Xml代码