最近在看一些有关反射和aidl远程服务控制的类，自己也小写了这么一个Android 电话的反射调用机制实现静默接听电话demo 自己总结出来，以供查阅，若是还有其他问题，希望大家指出。

首先要调用系统的接听电话功能，就要用到TelephonyManager和ITelephony类，其中TelephonyManager是可访问的，ITelephony不可访问，但是我们要用的功能：接听电话和拒绝电话被封装在ITelephony里面了。对此我们便要用到反射和aidl远程服务控制的知识。详细知识，不在阐释。

第一步：

在建好的工程中添加包com.android.internal.telephony，复制一下内容到新创建的ITelephony.aidl文件中

/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.internal.telephony;
import android.os.Bundle;
import java.util.List;
/**
* Interface used to interact with the phone.  Mostly this is used by the
* TelephonyManager class.  A few places are still using this directly.
* Please clean them up if possible and use TelephonyManager insteadl.
*
* {@hide}
*/
interface ITelephony {
/**
* Dial a number. This doesn't place the call. It displays
* the Dialer screen.
* @param number the number to be dialed. If null, this
* would display the Dialer screen with no number pre-filled.
*/
void dial(String number);
/**
* Place a call to the specified number.
* @param number the number to be called.
*/
void call(String number);
/**
* If there is currently a call in progress, show the call screen.
* The DTMF dialpad may or may not be visible initially, depending on
* whether it was up when the user last exited the InCallScreen.
*
* @return true if the call screen was shown.
*/
boolean showCallScreen();
/**
* Variation of showCallScreen() that also specifies whether the
* DTMF dialpad should be initially visible when the InCallScreen
* comes up.
*
* @param showDialpad if true, make the dialpad visible initially,
*                    otherwise hide the dialpad initially.
* @return true if the call screen was shown.
*
* @see showCallScreen
*/
boolean showCallScreenWithDialpad(boolean showDialpad);
/**
* End call or go to the Home screen
*
* @return whether it hung up
*/
boolean endCall();
/**
* Answer the currently-ringing call.
*
* If there's already a current active call, that call will be
* automatically put on hold.  If both lines are currently in use, the
* current active call will be ended.
*
* TODO: provide a flag to let the caller specify what policy to use
* if both lines are in use.  (The current behavior is hardwired to
* "answer incoming, end ongoing", which is how the CALL button
* is specced to behave.)
*
* TODO: this should be a oneway call (especially since it's called
* directly from the key queue thread).
*/
void answerRingingCall();
/**
* Silence the ringer if an incoming call is currently ringing.
* (If vibrating, stop the vibrator also.)
*
* It's safe to call this if the ringer has already been silenced, or
* even if there's no incoming call.  (If so, this method will do nothing.)
*
* TODO: this should be a oneway call too (see above).
*       (Actually *all* the methods here that return void can
*       probably be oneway.)
*/
void silenceRinger();
/**
* Check if we are in either an active or holding call
* @return true if the phone state is OFFHOOK.
*/
boolean isOffhook();
/**
* Check if an incoming phone call is ringing or call waiting.
* @return true if the phone state is RINGING.
*/
boolean isRinging();
/**
* Check if the phone is idle.
* @return true if the phone state is IDLE.
*/
boolean isIdle();
/**
* Check to see if the radio is on or not.
* @return returns true if the radio is on.
*/
boolean isRadioOn();
/**
* Check if the SIM pin lock is enabled.
* @return true if the SIM pin lock is enabled.
*/
boolean isSimPinEnabled();
/**
* Cancels the missed calls notification.
*/
void cancelMissedCallsNotification();
/**
* Supply a pin to unlock the SIM.  Blocks until a result is determined.
* @param pin The pin to check.
* @return whether the operation was a success.
*/
boolean supplyPin(String pin);
/**
* Handles PIN MMI commands (PIN/PIN2/PUK/PUK2), which are initiated
* without SEND (so <code>dial</code> is not appropriate).
*
* @param dialString the MMI command to be executed.
* @return true if MMI command is executed.
*/
boolean handlePinMmi(String dialString);
/**
* Toggles the radio on or off.
*/
void toggleRadioOnOff();
/**
* Set the radio to on or off
*/
boolean setRadio(boolean turnOn);
/**
* Request to update location information in service state
*/
void updateServiceLocation();
/**
* Enable location update notifications.
*/
void enableLocationUpdates();
/**
* Disable location update notifications.
*/
void disableLocationUpdates();
/**
* Enable a specific APN type.
*/
int enableApnType(String type);
/**
* Disable a specific APN type.
*/
int disableApnType(String type);
/**
* Allow mobile data connections.
*/
boolean enableDataConnectivity();
/**
* Disallow mobile data connections.
*/
boolean disableDataConnectivity();
/**
* Report whether data connectivity is possible.
*/
boolean isDataConnectivityPossible();
Bundle getCellLocation();
/**
* Returns the neighboring cell information of the device.
*/
int getCallState();
int getDataActivity();
int getDataState();
/**
* Returns the current active phone type as integer.
* Returns TelephonyManager.PHONE_TYPE_CDMA if RILConstants.CDMA_PHONE
* and TelephonyManager.PHONE_TYPE_GSM if RILConstants.GSM_PHONE
*/
int getActivePhoneType();
/**
* Returns the CDMA ERI icon index to display
*/
int getCdmaEriIconIndex();
/**
* Returns the CDMA ERI icon mode,
* 0 - ON
* 1 - FLASHING
*/
int getCdmaEriIconMode();
/**
* Returns the CDMA ERI text,
*/
String getCdmaEriText();
/**
* Returns true if CDMA provisioning needs to run.
*/
boolean getCdmaNeedsProvisioning();
/**
* Returns the unread count of voicemails
*/
int getVoiceMessageCount();
/**
* Returns the network type
*/
int getNetworkType();
/**
* Return true if an ICC card is present
*/
boolean hasIccCard();
}

保存后ADT会自动的在gen目录下生成相应的包和.java文件

第二步：

应用反射技术（请自行查阅）

新建类PhoneUtil

主要写两个方法

public class PhoneUtil {
/**
* 运用反射技术获得ITelephony
* @param telMgr
* @return
* @throws Exception
*/
public static ITelephony getITelephony(TelephonyManager telMgr) throws Exception{
Method method = telMgr.getClass().getDeclaredMethod("getITelephony");
method.setAccessible(true);
return (ITelephony)method.invoke(telMgr);//发回ITelephony
}
static public void printAllInform(Class clsShow) {
try {
// 取得所有方法
Method[] hideMethod = clsShow.getDeclaredMethods();
int i = 0;
for (; i < hideMethod.length; i++) {
Log.e("method name", hideMethod[i].getName());
}
// 取得所有常量
Field[] allFields = clsShow.getFields();
for (i = 0; i < allFields.length; i++) {
Log.e("Field name", allFields[i].getName());
}
} catch (SecurityException e) {
// throw new RuntimeException(e.getMessage());
e.printStackTrace();
} catch (IllegalArgumentException e) {
// throw new RuntimeException(e.getMessage());
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

第三步：

创建一个服务用于监听电话状态和自动接听电话事件

/**
* 自动接听来电类广播
* @author Owner
*
*/
public class TPhoneReceiver extends Service {
private TelephonyManager tlmar ;
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
tlmar = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
tlmar.listen(new CallPhoneStateListener(), //注册手机电话监听
CallPhoneStateListener.LISTEN_CALL_STATE);
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
class CallPhoneStateListener extends PhoneStateListener{
@Override
public void onCallStateChanged(int state, String incomingNumber) {
// TODO Auto-generated method stub
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:// 空闲
break;
case TelephonyManager.CALL_STATE_OFFHOOK:// 接听
break;
case TelephonyManager.CALL_STATE_RINGING:// 来电
try {
Toast.makeText(getApplicationContext(), "dddd", 1).show();
ITelephony it = PhoneUtil.getITelephony(tlmar);
it.silenceRinger();
//  it.endCall();//拒接
it.answerRingingCall();//自动接听
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
default:
break;
}
}
}
}
并且在AndroidManifest.xml李进行注册
 
<service android:name=".TPhoneReceiver"
android:priority="10000" >
<intent-filter>
<action android:name="com.example.baidumap.TPhoneReceiver" />
</intent-filter>
</service>


第四步：
创建主activity
用于启动服务



Intent tIntent = new Intent(this , TPhoneReceiverBordcast.class);
tIntent.setAction("com.example.baidumap.TPhoneReceiver");
startService(tIntent);


@Override
protected void onDestroy() {
// TODO Auto-generated method stub
if (tIntent != null) {
stopService(tIntent);
}
super.onDestroy();
}


最后别忘记了在AndroidManifest.xml李进行权限声明(主要权限)



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


到这里已经OK了！
启动模拟器并看看结果吧！

												


											

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