监听未接来电

这里主要是总结一下如何监听有未接来电的问题

1.1 使用广播接收器 BrocastReceiver

实现思路 : 

静态注册监听android.intent.action.PHONE_STATE 的广播接收器 当手机的状态改变后将会触发 onReceive.

手机的状态分为CALL_STATE_RINGING(响铃中),CALL_STATE_IDLE(空闲),CALL_STATE_OFFHOOK(忙音).

也就是说当你没有任何电话是，状态是 IDLE ，当接到电话时是 OFFHOOK ，电话结束后返回 IDLE 状态。

记录上一次的手机状态,如果的手机现在的空闲,上次的状态响铃中的话,就可以判断是未接来电.

<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<receiver android:name="com.example.phonestatedemo.receiver.PhoneStateReceiver">
     <intent-filter >
           <action android:name="android.intent.action.PHONE_STATE"/>
     </intent-filter>
 </receiver>

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;

public class PhoneStateReceiver extends BroadcastReceiver {

	private static int lastCallState = TelephonyManager.CALL_STATE_IDLE;
	
	@Override
	public void onReceive(Context arg0, Intent arg1) {
		String action = arg1.getAction();
		Log.d("PhoneStateReceiver", action );
		TelephonyManager telephonyManager = (TelephonyManager) arg0
				.getSystemService(Context.TELEPHONY_SERVICE);
		int currentCallState = telephonyManager.getCallState();
		Log.d("PhoneStateReceiver", "currentCallState=" + currentCallState );
		if (currentCallState == TelephonyManager.CALL_STATE_IDLE) {// 空闲
			//TODO 
		} else if (currentCallState == TelephonyManager.CALL_STATE_RINGING) {// 响铃
			//TODO 
		} else if (currentCallState == TelephonyManager.CALL_STATE_OFFHOOK) {// 接听
			//TODO 
		}
		if(lastCallState == TelephonyManager.CALL_STATE_RINGING && 
					currentCallState == TelephonyManager.CALL_STATE_IDLE){
			Toast.makeText(arg0, "有未接来电", 1).show();
		}
		
		lastCallState = currentCallState;

	}

}

1.2  使用 PhoneStateListener

实现思路 : 

继承PhoneStateListener后,当手机的状态改变后将会触发onCallStateChanged.手机的状态分为CALL_STATE_RINGING(响铃中),CALL_STATE_IDLE(空闲),CALL_STATE_OFFHOOK(忙音).

也就是说当你没有任何电话是，状态是 IDLE ，当接到电话时是 OFFHOOK ，电话结束后返回 IDLE 状态。

记录上一次的手机状态,如果的手机现在的空闲,上次的状态响铃中的话,就可以判断是未接来电.

不足:现在的处理不能判断出是用户是否主动不接电话.

TelephonyManager telephonyManager = (TelephonyManager) this
				.getSystemService(Context.TELEPHONY_SERVICE);
		telephonyManager.listen(new CallStateListener(this),
				PhoneStateListener.LISTEN_CALL_STATE);

package com.example.phonestatedemo.listener;

import android.content.Context;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;

public class CallStateListener extends PhoneStateListener {
	private static int lastetState = TelephonyManager.CALL_STATE_IDLE; // 最后的状态
	private Context context;

	public CallStateListener(Context context) {
		this.context = context;

	}

	@Override
	public void onCallStateChanged(int state, String incomingNumber) {
		// TODO Auto-generated method stub
		super.onCallStateChanged(state, incomingNumber);
		Log.d("CallStateListener", "onCallStateChanged state=" + state );
		// 如果当前状态为空闲,上次状态为响铃中的话,则破觚为认为是未接来电
		if (lastetState == TelephonyManager.CALL_STATE_RINGING
				&& state == TelephonyManager.CALL_STATE_IDLE) {
			//TODO
			Toast.makeText(this.context, "CallStateListener 有未接来电", 1).show();
		}

		lastetState = state;

	}

}