监听电话状态

    class MyPhoneStateListener extends PhoneStateListener {

        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
            switch(state) {
            case TelephonyManager.CALL_STATE_IDLE: //空闲
                break;
            case TelephonyManager.CALL_STATE_RINGING: //来电
                break;
            case TelephonyManager.CALL_STATE_OFFHOOK: //摘机（正在通话中）
                break;
            }
        }
        
    }


         //获取电话通讯服务
        TelephonyManager tpm = (TelephonyManager) this
                .getSystemService(Context.TELEPHONY_SERVICE);
        //创建一个监听对象，监听电话状态改变事件
        tpm.listen(new MyPhoneStateListener(),
                PhoneStateListener.LISTEN_CALL_STATE);

 

权限：

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

 以下文章转载自：http://www.eoeandroid.com/thread-8994-1-1.html

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

来电action为TelephonyManager.ACTION_PHONE_STATE_CHANGED

去电action为Intent.ACTION_NEW_OUTGOING_CALL

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) {
                //如果是拨打电话
                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{                        
                        //如果是来电
                        TelephonyManager tm = 
                            (TelephonyManager)context.getSystemService(Service.TELEPHONY_SERVICE);                        
                        
                        switch (tm.getCallState()) {
                        case TelephonyManager.CALL_STATE_RINGING:
                                incomingFlag = true;//标识当前是来电
                                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=".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>