輕松監聽Android接打電話

        我們要實現在Android中監聽接電話和打電話，其實很簡單，只需要兩個步驟，本文以實例的形式進行講解。

        1、第一步，寫一個Receiver繼承自BroadcastReceiver。

1. public class PhoneStatReceiver extends BroadcastReceiver{   
2.         private static final String TAG = "PhoneStatReceiver";    
3. //        private static MyPhoneStateListener phoneListener = new MyPhoneStateListener();   
4.         private static boolean incomingFlag = false;  
5.         private static String incoming_number = null;  
6.  
7.         @Override    
8.         public void onReceive(Context context, Intent intent) {    
9.                 //如果是撥打電話    
10.                 if(intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)){                           
11.                         incomingFlag = false;  
12.                         String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);          
13.                         Log.i(TAG, "call OUT:"+phoneNumber);                           
14.                 }else{                           
15.                         //如果是來電    
16.                         TelephonyManager tm =    
17.                             (TelephonyManager)context.getSystemService(Service.TELEPHONY_SERVICE);                         
18.  
19.                         switch (tm.getCallState()) {    
20.                         case TelephonyManager.CALL_STATE_RINGING:    
21.                                 incomingFlag = true;//標識當前是來電    
22.                                 incoming_number = intent.getStringExtra("incoming_number");    
23.                                 Log.i(TAG, "RINGING :"+ incoming_number);    
24.                                 break;    
25.                         case TelephonyManager.CALL_STATE_OFFHOOK:                                   
26.                                 if(incomingFlag){    
27.                                         Log.i(TAG, "incoming ACCEPT :"+ incoming_number);    
28.                                 }    
29.                                 break;    
30.                         case TelephonyManager.CALL_STATE_IDLE:                                   
31.                                 if(incomingFlag){    
32.                                         Log.i(TAG, "incoming IDLE");                                   
33.                                 }    
34.                                 break;    
35.                         }    
36.                 }    
37.         }    
38. }  

       第二步：在AndroidManifest.xml，配置寫好的Receiver，並攔截相應的BroadCastAction， 另外注意加上相應的權限。

1. <receiver android:name=".filter.PhoneStatReceiver">    
2.             <intent-filter>  
3.                  <action android:name="android.intent.action.PHONE_STATE"/>             
4.                  <action android:name="android.intent.action.NEW_OUTGOING_CALL" />  
5.             </intent-filter>  
6. </receiver>  
7.   
8. <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>  
9. <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"></uses-permission>