android2.3上来电接听的方法

 public synchronized void answerRingingCall()
    {//据说该方法只能用于Android2.3及2.3以上的版本上
        try
        {
            Intent localIntent1 = new Intent(Intent.ACTION_HEADSET_PLUG);
            localIntent1.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
            localIntent1.putExtra("state", 1);
            localIntent1.putExtra("microphone", 1);
            localIntent1.putExtra("name", "Headset");
            context.sendOrderedBroadcast(localIntent1, "android.permission.CALL_PRIVILEGED");
            Intent localIntent2 = new Intent(Intent.ACTION_MEDIA_BUTTON);
            KeyEvent localKeyEvent1 = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_HEADSETHOOK);
            localIntent2.putExtra("android.intent.extra.KEY_EVENT", localKeyEvent1);
            context.sendOrderedBroadcast(localIntent2, "android.permission.CALL_PRIVILEGED");
            Intent localIntent3 = new Intent(Intent.ACTION_MEDIA_BUTTON);
            KeyEvent localKeyEvent2 = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK);
            localIntent3.putExtra("android.intent.extra.KEY_EVENT", localKeyEvent2);
            context.sendOrderedBroadcast(localIntent3, "android.permission.CALL_PRIVILEGED");
            Intent localIntent4 = new Intent(Intent.ACTION_HEADSET_PLUG);
            localIntent4.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
            localIntent4.putExtra("state", 0);
            localIntent4.putExtra("microphone", 1);
            localIntent4.putExtra("name", "Headset");
            context.sendOrderedBroadcast(localIntent4, "android.permission.CALL_PRIVILEGED");
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }