Android intercepts SMS messages and blocks system notifications

There are several key points to intercept text messages:

 

1. Android receives text messages in broadcast mode.

2. You only need to add the "receive" SMS permission to your manifest. xml file.

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1. <Uses-Permission Android: Name = "android. Permission. receive_sms"> </uses-Permission>

<Uses-Permission Android: Name = "android. Permission. receive_sms"> </uses-Permission> 

3. Write a broadcast receiving class.

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1. Public class smsreceiveandmask extends broadcastreceiver {
2. Private string tag = "smsreceiveandmask ";
3. @ Override
4. Public void onreceive (context, intent ){
6. }

Public class smsreceiveandmask extends broadcastreceiver {private string tag = "smsreceiveandmask"; @ overridepublic void onreceive (context, intent ){} 

4. Intent-filter should be added to the receiver tag of manifest. XML, and action is

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1. <Action Android: Name = "android. provider. telephony. sms_received"/>

<Action Android: Name = "android. provider. telephony. sms_received"/> 

5. It is important to add the priority on the intent-filter so that you can receive SMS messages that take precedence over the system or other software.

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1. <Cycler Android: Name = ". smsreceiveandmask">
2. <Intent-filter Android: Priority = "1000">
3. <Action Android: Name = "android. provider. telephony. sms_received"/>
4. </Intent-filter>
5. </Cycler>

<Cycler Android: Name = ". smsreceiveandmask "> <intent-filter Android: Priority =" 1000 "> <action Android: Name =" android. provider. telephony. sms_received "/> </intent-filter> </Cycler> 

6. when your program receives the SMS to be blocked, use this. abortbroadcast (); to end broadcasting and send it to other programs, so that the system will not receive text message broadcast and notification will not prompt

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1. // Step 3: Cancel
2. If (flags_filter ){
3. This. abortbroadcast ();
4. }

// Step 3: cancel if (flags_filter) {This. abortbroadcast ();} 

 

The source code is as follows:

Manifest. xml

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1. <? XML version = "1.0" encoding = "UTF-8"?>
2. <Manifest xmlns: Android = "http://schemas.android.com/apk/res/android"
3. Package = "com. hwttnet. Test. smsreceiveandmask" Android: versioncode = "1"
4. Android: versionname = "1.0" type = "codeph" text = "/codeph">
5. <Uses-SDK Android: minsdkversion = "3"/>
6. <Uses-Permission Android: Name = "android. Permission. receive_sms"> </uses-Permission>
7. <Application Android: icon = "@ drawable/icon" Android: Label = "@ string/app_name">
8. <Cycler Android: Name = ". smsreceiveandmask">
9. <Intent-filter Android: Priority = "1000">
10. <Action Android: Name = "android. provider. telephony. sms_received"/>
11. </Intent-filter>
12. </Cycler>
13. </Application>
14. </Manifest>

<? XML version = "1.0" encoding = "UTF-8"?> <Manifest xmlns: Android = "http://schemas.android.com/apk/res/android" package = "com. hwttnet. test. smsreceiveandmask "Android: versioncode =" 1 "Android: versionname =" 1.0 "> <uses-SDK Android: minsdkversion =" 3 "/> <uses-Permission Android: name = "android. permission. receive_sms "> </uses-Permission> <application Android: icon =" @ drawable/icon "Android: Label =" @ string/app_name "> <receiver er Android: Name = ". smsreceiveandmask "> <intent-filter Android: Priority =" 1000 "> <action Android: Name =" android. provider. telephony. sms_received "/> </intent-filter> </receiver> </Application> </manifest> 

 

Broadcastreceiver class:

 

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1. Package com. hwttnet. Test. smsreceiveandmask;
2. Import Android. App. activity;
3. Import Android. content. broadcastreceiver;
4. Import Android. content. context;
5. Import Android. content. intent;
6. Import Android. OS. Bundle;
7. Import Android. telephony. smsmessage;
8. Import Android. util. log;
9. Public class smsreceiveandmask extends broadcastreceiver {
10. Private string tag = "smsreceiveandmask ";
11. @ Override
12. Public void onreceive (context, intent ){
13. Log. V (TAG, ">>>>>> onreceive start ");
14. // Step 1. Obtain the text message content and sender
15. Stringbuilder body = new stringbuilder (); // text message content
16. Stringbuilder number = new stringbuilder (); // SMS sender
17. Bundle bundle = intent. getextras ();
18. If (bundle! = NULL ){
19. Object [] _ PDUS = (object []) bundle. Get ("PDUS ");
20. Smsmessage [] Message = new smsmessage [_ PDUS. Length];
21. For (INT I = 0; I <_ PDUS. length; I ++ ){
22. Message [I] = smsmessage. createfrompdu (byte []) _ PDUS [I]);
23. }
24. For (smsmessage currentmessage: Message ){
25. Body. append (currentmessage. getdisplaymessagebody ());
26. Number. append (currentmessage. getdisplayoriginatingaddress ());
27. }
28. String smsbody = body. tostring ();
29. String smsnumber = number. tostring ();
30. If (smsnumber. Contains ("+ 86 ")){
31. Smsnumber = smsnumber. substring (3 );
32. }
33. // Step 2: Check whether the text message content meets the filtering conditions.
34. Boolean flags_filter = false;
35. If (smsnumber. Equals ("10086") {// Block messages sent from 10086
36. Flags_filter = true;
37. Log. V (TAG, "sms_number.equals (10086 )");
38. }
39. // Step 3: Cancel
40. If (flags_filter ){
41. This. abortbroadcast ();
42. }
43. }
44. Log. V (TAG, ">>>>>> onreceive end ");
45. }
46. }