Android6.0 源码修改之屏蔽系统短信功能和来电功能
一、屏蔽系统短信功能
1、屏蔽所有短信
android 4.2 短信发送流程分析可参考这篇 戳这
源码位置 vendor\mediatek\proprietary\packages\apps\Mms\src\com\android\mms\transaction\SmsReceiverService.java
private void handleSmsReceived(Intent intent, int error) {
//2018-10-09 cczheng add for intercept mms notifications start
if (true) {
Log.i("SmsReceived", "handleSmsReceived");
return;
}
//2018-10-09 cczheng add for intercept mms notifications end
SmsMessage[] msgs = Intents.getMessagesFromIntent(intent);
/// M:Code analyze 022, check null @{
if (msgs == null) {
MmsLog.e(MmsApp.TXN_TAG, "getMessagesFromIntent return null.");
return;
}
MmsLog.d(MmsApp.TXN_TAG, "handleSmsReceived SmsReceiverService");
///
......
}
在handleSmsReceived（）方法中直接return即可，不去解析和分发短信消息，同时这样操作 短信将不会记录到短信数据库中,插入短信消息到数据库的方法见下文insertMessage（)方法。
2、屏蔽特定的短信(特定的短信号码或者短信内容)
源码位置同上
-
SmsMessage.getOriginatingAddress() 获取短信号码
-
SmsMessage.getMessageBody() 获取短信内容
private void handleSmsReceived(Intent intent, int error) { SmsMessage[] msgs = Intents.getMessagesFromIntent(intent); ..... /// M:Code analyze 024, print log @{ SmsMessage tmpsms = msgs[0]; MmsLog.d(MmsApp.TXN_TAG, "handleSmsReceived" + (tmpsms.isReplace() ? "(replace)" : "") + " messageUri: " + messageUri + ", address: " + tmpsms.getOriginatingAddress() + ", body: " + tmpsms.getMessageBody()); /// @ //2018-10-09 cczheng add for intercept mms notifications start if ("10010".equals(tmpsms.getOriginatingAddress()) || "话费".contains(tmpsms.getMessageBody())) { Log.i("SmsReceived", "handleSmsReceived"); return; } //2018-10-09 cczheng add for intercept mms notifications end .... }
是否插入短信消息到数据库,insertMessage（)方法在handleSmsReceived()中调用
private Uri insertMessage(Context context, SmsMessage[] msgs, int error, String format) {
// Build the helper classes to parse the messages.
if (msgs == null) {
MmsLog.e(MmsApp.TXN_TAG, "insertMessage:getMessagesFromIntent return null.");
return null;
}
/// @}
SmsMessage sms = msgs[0];
if (sms.getMessageClass() == SmsMessage.MessageClass.CLASS_0) {
MmsLog.d(MmsApp.TXN_TAG, "insertMessage: display class 0 message!");
displayClassZeroMessage(context, msgs, format);
return null;
} else if (sms.isReplace()) {
MmsLog.d(MmsApp.TXN_TAG, "insertMessage: is replace message!");
return replaceMessage(context, msgs, error);
} else {
MmsLog.d(MmsApp.TXN_TAG, "insertMessage: stored directly!");
return storeMessage(context, msgs, error);
}
}
3、应用层拦截短信(不用修改android源码，原理就是用你的app去替代系统默认的短信app，过程略繁琐)
需要添加SmsReceiver，MmsReceiver，ComposeSmsActivity，HeadlessSmsSendService这几个类，并在AndroidManifest中进行相应配置，具体流程可参考这篇 戳这
二、屏蔽系统来电响铃和通知提示
屏蔽系统来电可分为三个步骤
1.来电静音，不响铃
2.来电挂断，不出现IncallActivity
3、拦截未接来电通知，不显示在状态栏StatusBar中
ps：此种修改方式的弊端在于来电时网络数据会离线2s左右
好，现在我们开始按这三个步骤来修改源码
1.来电静音，不响铃
源码位置 packages/services/Telecomm/src/com/android/server/telecom/Ringer.java
private void updateRinging(Call call) {
if (mRingingCalls.isEmpty()) {
stopRinging(call, "No more ringing calls found");
stopCallWaiting(call);
} else {
//2018-10-10 cczheng add anotation function startRingingOrCallWaiting() for silent call start
Log.d("callRinging", "silent call, will not play ringtone");
// startRingingOrCallWaiting(call);
//2018-10-10 cczheng add anotation function startRingingOrCallWaiting() for silent call end
}
}
是的，注释掉startRingingOrCallWaiting(call);方法就ok啦
2.来电挂断，不出现IncallActivity
思路：监听PhoneState，当监听到响铃时，直接通过反射调用endcall方法挂断电话。监听PhoneStateListener可以写到广播中，当收到开机广播时，开始监听phoneState，这样和系统保持同步。以下是参考代码
public class PhoneStartReceiver extends BroadcastReceiver {
private static final String TAG = "PhoneStartReceiver";
private PhoneCallListener mPhoneCallListener;
private TelephonyManager mTelephonyManager;
@Override
public void onReceive(final Context context, final Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
// endCall when CALL_STATE_RINGING
initPhoneCallListener(context);
}
}
private void initPhoneCallListener(Context context){
mPhoneCallListener = new PhoneCallListener();
mTelephonyManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
mTelephonyManager.listen(mPhoneCallListener, PhoneCallListener.LISTEN_CALL_STATE);
}
public class PhoneCallListener extends PhoneStateListener {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
Log.v(TAG, "onCallStateChanged-state: " + state);
Log.v(TAG, "onCallStateChanged-incomingNumber: " + incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
endCall();
break;
default:
break;
}
super.onCallStateChanged(state, incomingNumber);
}
}
private void endCall() {
try {
Method m1 = mTelephonyManager.getClass().getDeclaredMethod("getITelephony");
if (m1 != null) {
m1.setAccessible(true);
Object iTelephony = m1.invoke(mTelephonyManager);
if (iTelephony != null) {
Method m2 = iTelephony.getClass().getDeclaredMethod("silenceRinger");
if (m2 != null) {
m2.invoke(iTelephony);
Log.v(TAG, "silenceRinger......");
}
Method m3 = iTelephony.getClass().getDeclaredMethod("endCall");
if (m3 != null) {
m3.invoke(iTelephony);
Log.v(TAG, "endCall......");
}
}
}
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG, "endCallError", e);
}
}
}
3.拦截未接来电通知，不显示在状态栏StatusBarr中
源码位置 packages/apps/InCallUI/src/com/android/incallui/StatusBarNotifier.java
private void updateInCallNotification(final InCallState state, CallList callList) {
...
final Call call = getCallToShow(callList);
//2018-10-10 cczheng add intercept incoming notification start
if (true) {
if (call != null) {
Log.v("InCallNotification", "phoneNumber = " + call.getNumber());
}
return;
}
//2018-10-10 cczheng add intercept incoming notification end
if (call != null) {
showNotification(call);
} else {
cancelNotification();
}
...
}
其实核心方法就是showNotification(call)，发送通知当statusBar收到通知就处理并显示在状态栏。
当你发现这样处理完后，重新mm，然后push替换Dialer.apk重启后，你会坑爹的发现状态栏那个未接来电图标依旧显示，无fa可说，继续跟踪日志揪出罪魁祸首，最终发现另一处奇葩的地方。
源码位置 packages/services/Telecomm/src/com/android/server/telecom/ui/MissedCallNotifierImpl.java
诺，就是这了，看注释就明白了吧 Create a system notification for the missed call
/**
* Create a system notification for the missed call.
*
* @param call The missed call.
*/
@Override
public void showMissedCallNotification(Call call) {
////2018-10-10 cczheng hide missed call notification [S]
if (true) {
android.util.Log.i("misscall", "showMissedCallNotification......");
return;
}
///2018-10-10 cczheng hide missed call notification [E]
mMissedCallCount++;
final int titleResId;
final String expandedText; // The text in the notification's line 1 and 2.
....
}
ok，这样我们就搞定了来电功能。
三、隐藏短信应用和电话应用在launcher中显示(去除AndroidManifest中的category)
<category android:name="android.intent.category.LAUNCHER" />
四、总结
Android源码修改没有大家想象的那么难，毕竟Google工程师都已经给我们标注了详细的注释说明，只是框架和封装的思路难以理解，这就考验我们的耐心了，Log是个好东西，多加日志，多分析，这样很容易上手。
