Android中监听未接来电的2种方法

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; 
 
  } 
 
}