复制代码

复制代码

1. public class GetGsmSignalStrength extends Activity
2. {
3. /* 我们可以用它们onResume和onPause方法停止listene*/
4. TelephonyManager Tel;
5. MyPhoneStateListener MyListener;
6. /** Called when the activity is first created. */
7. @Override
8. public void onCreate(Bundle savedInstanceState)
9. {
10. super.onCreate(savedInstanceState);
11. setContentView(R.layout.main);
12. /* Update the listener, and start it */
13. MyListener = new MyPhoneStateListener();
14. Tel = ( TelephonyManager )getSystemService(Context.TELEPHONY_SERVICE);
15. Tel.listen(MyListener ,PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
16. }
17. /* Called when the application is minimized */
18. @Override
19. protected void onPause()
20. {
21. super.onPause();
22. Tel.listen(MyListener, PhoneStateListener.LISTEN_NONE);
23. }
24. /* Called when the application resumes */
25. @Override
26. protected void onResume()
27. {
28. super.onResume();
29. Tel.listen(MyListener,PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
30. }
31. /* —————————– */
32. /* 开始PhoneState听众*/
33. /* —————————– */
34. private class MyPhoneStateListener extends PhoneStateListener
35. {
36. /* 从得到的信号强度,每个tiome供应商有更新*/
37. @Override
38. public void onSignalStrengthsChanged(SignalStrength signalStrength)
39. {
40. super.onSignalStrengthsChanged(signalStrength);
41. Toast.makeText(getApplicationContext(), "Go to Firstdroid!!! GSM Cinr = "
42. + String.valueOf(signalStrength.getGsmSignalStrength()), Toast.LENGTH_SHORT).show();
43. }
44. };
45. }