Android 2.3以上自動接聽來電

因為Android2.3以上增加了對permission android.permission.MODIFY_PHONE_STATE 的限制，2.3之前的通過反射機制調用ITelephone的能力的做法已經不適用

2.3上實現方式：

1. public synchronized void answerRingingCall() {
2. // 據說該方法只能用於Android2.3及2.3以上的版本上
3. try {
4. Intent localIntent1 = new Intent(Intent.ACTION_HEADSET_PLUG);
5. localIntent1.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
6. localIntent1.putExtra("state", 1);
7. localIntent1.putExtra("microphone", 1);
8. localIntent1.putExtra("name", "Headset");
9. sendOrderedBroadcast(localIntent1,
10. "android.permission.CALL_PRIVILEGED");
11. Intent localIntent2 = new Intent(Intent.ACTION_MEDIA_BUTTON);
12. KeyEvent localKeyEvent1 = new KeyEvent(KeyEvent.ACTION_DOWN,
13. KeyEvent.KEYCODE_HEADSETHOOK);
14. localIntent2.putExtra("android.intent.extra.KEY_EVENT",
15. localKeyEvent1);
16. sendOrderedBroadcast(localIntent2,
17. "android.permission.CALL_PRIVILEGED");
18. Intent localIntent3 = new Intent(Intent.ACTION_MEDIA_BUTTON);
19. KeyEvent localKeyEvent2 = new KeyEvent(KeyEvent.ACTION_UP,
20. KeyEvent.KEYCODE_HEADSETHOOK);
21. localIntent3.putExtra("android.intent.extra.KEY_EVENT",
22. localKeyEvent2);
23. sendOrderedBroadcast(localIntent3,
24. "android.permission.CALL_PRIVILEGED");
25. Intent localIntent4 = new Intent(Intent.ACTION_HEADSET_PLUG);
26. localIntent4.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
27. localIntent4.putExtra("state", 0);
28. localIntent4.putExtra("microphone", 1);
29. localIntent4.putExtra("name", "Headset");
30. sendOrderedBroadcast(localIntent4,
31. "android.permission.CALL_PRIVILEGED");
32. } catch (Exception e) {
33. e.printStackTrace();
34. }
35. }