电话状态的监听:

/***
	 * 继承PhoneStateListener类，我们可以重新其内部的各种监听方法 然后通过手机状态改变时，系统自动触发这些方法来实现我们想要的功能
	 */
	class MyPhoneStateListener extends PhoneStateListener {

		@Override
		public void onCallStateChanged(int state, String incomingNumber) {
			switch (state) {
			case TelephonyManager.CALL_STATE_IDLE:
				Log.v(tag, "空闲状态 ");
				break;
			case TelephonyManager.CALL_STATE_RINGING:
				Log.v(tag, "手机铃声响了，来电号码:" + incomingNumber);
				break;
			case TelephonyManager.CALL_STATE_OFFHOOK:
				Log.v(tag, "通话状态 ");
				break;
			default:
				break;
			}

			super.onCallStateChanged(state, incomingNumber);
		}

	}

// 发送短信
						smsManager = SmsManager.getDefault();
						PendingIntent pIntent = PendingIntent.getBroadcast(
								ShopDealActivity.this, 0, new Intent(), 0);
						smsManager.sendTextMessage("10086", null, msg_string,
								pIntent, null);
						Toast.makeText(context, "短信已发送", Toast.LENGTH_SHORT)
								.show();

android电话状态的监听