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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StatusBar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。
