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
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
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。