Android监听来电和去电

要监听android打电话和接电话，只需下面2步骤
1.第一步，写一个Receiver继承自BroadcastReceiver

 import android.app.Service;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.telephony.TelephonyManager;
 import android.util.Log;

 public class PhoneStateBroadCastReceiver extends BroadcastReceiver
 {
  private static final String TAG = "PhoneStateBroadCastReceiver";

  private static boolean mIncomingFlag = false;
  private static String mIncomingNumber = null;

  @Override
  public void onReceive(Context context, Intent intent)
  {
   // 如果是拨打电话
   if (intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL))
   {
    mIncomingFlag = false;
    String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
    Log.i(TAG, "call OUT:" + phoneNumber);
   } else
   {
    // 如果是来电
    TelephonyManager tManager =
    (TelephonyManager) context.getSystemService(Service.TELEPHONY_SERVICE);
    switch (tManager.getCallState())
    {
    case TelephonyManager.CALL_STATE_RINGING:
     mIncomingNumber = intent.getStringExtra("incoming_number");
     Log.i(TAG, "RINGING :" + mIncomingNumber);
     break;
    case TelephonyManager.CALL_STATE_OFFHOOK:
     if (mIncomingFlag)
     {
      Log.i(TAG, "incoming ACCEPT :" + mIncomingNumber);
     }
     break;
    case TelephonyManager.CALL_STATE_IDLE:
     if (mIncomingFlag)
     {
      Log.i(TAG, "incoming IDLE");
     }
     break;
    }
   }
  }

 }

第二步：在AndroidManifest.xml，配置写好的Receiver，并拦截相应的BroadCastAction，
另外注意加上相应的权限

 <receiver android:name=".broadcase.PhoneStateBroadCastReceiver">
             <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 android:name="android.permission.PROCESS_OUTGOING_CALLS" />

Android监听来电和去电 | 若水工作室 http://www.92coding.com/blog/index.php/archives/46.html