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Android-輕松監聽來電和去電

編輯：初級開發

要監聽android打電話和接電話，只需下面2步驟
1.第一步，寫一個Receiver繼承自BroadcastReceiver
public class PhoneStatReceiver extends BroadcastReceiver{

      private static final String TAG = "PhoneStatReceiver";

//       private static MyPhoneStateListener phoneListener = new MyPhoneStateListener();

      private static boolean incomingFlag = false;

      private static String incoming_number = null;

      @Override
      public void onReceive(Context context, Intent intent) {
            //如果是撥打電話
            if(intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)){
                     incomingFlag = false;
                     String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
                     Log.i(TAG, "call OUT:"+phoneNumber);
            }else{
                     //如果是來電
                     TelephonyManager tm =
                        (TelephonyManager)context.getSystemService(Service.TELEPHONY_SERVICE);

                     switch (tm.getCallState()) {
                     case TelephonyManager.CALL_STATE_RINGING:
                              incomingFlag = true;//標識當前是來電
                              incoming_number = intent.getStringExtra("incoming_number");
                              Log.i(TAG, "RINGING :"+ incoming_number);
                              break;
                     case TelephonyManager.CALL_STATE_OFFHOOK:
                              if(incomingFlag){
                                    Log.i(TAG, "incoming ACCEPT :"+ incoming_number);
                              }
                              break;

                     case TelephonyManager.CALL_STATE_IDLE:
                              if(incomingFlag){
                                    Log.i(TAG, "incoming IDLE");
                              }
                              break;
                     }
            }
      }
}

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。
<receiver android:name=".filter.PhoneStatReceiver">
         <intent-filter>
               <action android:name="android.intent.action.PHONE_STATE"/>
               <action android:name="android.intent.action.NEW_OUTGOING_CALL" />
         </intent-filter>
</receiver>

<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
      <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"></uses-permission>

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