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昨天下午，闲着没事，突然想起来，现在开车不允许打电话，如果把手机接上外放，放在车上，来电之后，自动接听，是不是很方便呢。所以决定着手写一个APP，参考了关于ITelephony.aidl的使用。其实只有两个知识点：第一就是如何添加ITelephony.aidl和NeighboringCellInfo.aidl，第二就是如何让服务生效。在4.1.2和2.2版本上验证都是可以的。不知道怎么贴图上来，自己验证吧。具体代码如下：
1、先看布局界面，将activity做成dialog 风格，在AndroidManifest.xml配置。这样不会显得界面太单调
xml代码如下：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/answer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/answer_call" />
<Button
android:id="@+id/end"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/end_call" />
<Button
android:id="@+id/cancel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/cancel_call" />
</LinearLayout>
2、添加三个按键的点击事件，点击其实就是添加服务的过程;
package com.call;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class PhoneCall extends Activity {
private Button mAnwser;
private Button mEnd;
private Button mCancel;
static int mButton = 0;//用于传递button id
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAnwser = (Button) findViewById(R.id.answer);
mEnd = (Button) findViewById(R.id.end);
mCancel = (Button) findViewById(R.id.cancel);
mAnwser.setOnClickListener(new ButtonOnClickListener());
mEnd.setOnClickListener(new ButtonOnClickListener());
mCancel.setOnClickListener(new ButtonOnClickListener());
}
private class ButtonOnClickListener implements View.OnClickListener {
Intent intent = new Intent(PhoneCall.this, PhoneService.class);
@Override
public void onClick(View v) {
mButton = v.getId();
switch (mButton) {
case R.id.answer:
case R.id.end:
startService(intent);
finish();
break;
case R.id.cancel:
stopService(intent);
finish();
break;
}
}
}
}
3、添加ITelephony.aidl，建立包名com.android.internal.telephony，ITelephony.aidl文件到处都可以拿得到，此文最后我也顺手贴了上来。可以参考。
package com.call;
import java.lang.reflect.Method;
import android.content.Context;
import android.telephony.TelephonyManager;
import com.android.internal.telephony.ITelephony;
public class PhoneUtils {
public ITelephony getITelephony(Context context) {
TelephonyManager telMgr = (TelephonyManager) context
.getSystemService(Context.TELEPHONY_SERVICE);
ITelephony iTelephony = null;
try {
Class<?> c = Class.forName(telMgr.getClass().getName());
Method m = c.getDeclaredMethod("getITelephony");
m.setAccessible(true);
iTelephony = (ITelephony) m.invoke(telMgr);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return iTelephony;
}
}
4、写一个服务
package com.call;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.view.KeyEvent;
public class PhoneService extends Service {
PhoneUtils mPhoneUtils;
private TelephonyManager mTelMgr;
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
// TODO Auto-generated method stub
mPhoneUtils = new PhoneUtils();
mTelMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
mTelMgr.listen(new PhoneStateChangeListener(),
PhoneStateListener.LISTEN_CALL_STATE);
super.onCreate();
}
private class PhoneStateChangeListener extends PhoneStateListener {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
// TODO Auto-generated method stub
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
if (R.id.answer == PhoneCall.mButton) {
try {
mPhoneUtils.getITelephony(PhoneService.this)
.silenceRinger();
mPhoneUtils.getITelephony(PhoneService.this)
.answerRingingCall();
} catch (Exception e) {
// TODO Auto-generated catch block
// 2.3以上执行以下代码实现自动接听
Intent mintent = new Intent(
"android.intent.action.MEDIA_BUTTON");
KeyEvent keyEvent = new KeyEvent(KeyEvent.ACTION_DOWN,
KeyEvent.KEYCODE_HEADSETHOOK);
mintent.putExtra("android.intent.extra.KEY_EVENT",
keyEvent);
// 通话权限 允许程序拨打电话， 替换系统的拨号器界面
PhoneService.this.sendOrderedBroadcast(mintent,
"android.permission.CALL_PRIVILEGED");
mintent = new Intent(
"android.intent.action.MEDIA_BUTTON");
keyEvent = new KeyEvent(KeyEvent.ACTION_UP,
KeyEvent.KEYCODE_HEADSETHOOK);
mintent.putExtra("android.intent.extra.KEY_EVENT",
keyEvent);
PhoneService.this.sendOrderedBroadcast(mintent,
"android.permission.CALL_PRIVILEGED");
e.printStackTrace();
}
} else if (R.id.end == PhoneCall.mButton) {
try {
mPhoneUtils.getITelephony(PhoneService.this).endCall();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
}
// super.onCallStateChanged(state, incomingNumber);
}
}
}
}
5、注意添加相关权限
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.call"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="8" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.call.PhoneCall"
android:label="@string/app_name"
android:theme="@android:style/Theme.Dialog" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".PhoneService" />
</application>
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
</manifest>
至此，大功告成！下面是ITelephony.aidl文件的内容 ：
/*
* 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.
*
* {@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.
*/
List<NeighboringCellInfo> getNeighboringCellInfo();
int getCallState();
int getDataActivity();
int getDataState();
}
下面是NeighboringCellInfo.aidl文件的内容 ：
package android.telephony;
parcelable NeighboringCellInfo;
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