知识点讲解：

Android没有对外公开结束通话的API，如果需要结束通话，必须使用AIDL与电话管理服务进行通信，并调用服务中的API实现结束通话，方法如下：

1> 从Android的源代码中拷贝以下文件到项目中：
com.android.internal.telephony包下的ITelephony.aidl
android.telephony包下的NeighboringCellInfo.aidl
注意：需要在项目中建立对应的包名存放上述两个aidl文件，
如下图所示。开发工具会在gen目录下自动生成ITelephony.java

2> 调用ITelephony.endCall()结束通话：
Method method = Class.forName("android.os.ServiceManager").getMethod("getService", String.class);
IBinder binder = (IBinder)method.invoke(null, new Object[]{TELEPHONY_SERVICE});
ITelephony telephony = ITelephony.Stub.asInterface(binder);
telephony.endCall();

在清单文件AndroidManifest.xml中添加权限：

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

代码示例：

DemoActivity.java:

package cn.itcast.endcall;import java.lang.reflect.Method;import com.android.internal.telephony.ITelephony;import android.app.Activity;import android.os.Bundle;import android.os.IBinder;import android.os.RemoteException;import android.view.View;public class DemoActivity extends Activity {	ITelephony iTelephony;	/** Called when the activity is first created. */	@Override	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		try {			// 获取系统电话管理的服务			Method method = Class.forName("android.os.ServiceManager")					.getMethod("getService", String.class);			// 通过反射技术获得binder对象			IBinder binder = (IBinder) method.invoke(null,					new Object[] { TELEPHONY_SERVICE });			iTelephony = ITelephony.Stub.asInterface(binder);		} catch (Exception e) {			e.printStackTrace();		}	}	public void endcall(View view) {		try {			// iTelephony.endCall();			iTelephony.call("15139394270");		} catch (RemoteException e) {			e.printStackTrace();		}	}}

/* //device/java/android/android/content/Intent.aidl**** Copyright 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 android.telephony;parcelable NeighboringCellInfo;

/* * 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;import android.telephony.NeighboringCellInfo;/** * 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. * * [email protected]} */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.     */    List<NeighboringCellInfo> getNeighboringCellInfo();     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();}