Android API: SMS service and Contacts

Android API supports the development of applications that can send and receive SMS messages. Program . Currently, the android simulator we use in the development process does not support sending SMS, but it can receive SMS. Now let's explore Android's support for SMS. We will build a small application to listen to the SMS messages received on mobile devices (or simulators) and display them. Let's define an intent receiver to handle the SMS Receiving Event: Package COM. wissen. SMS. extends er; public class smsreceiver extends broadcastreceiver {@ override public void onreceive (context, intent) {// todo} package COM. wissen. SMS. extends er; public class smsreceiver extends broadcastreceiver {@ overridepublic void onreceive (context, intent) {// todo} We need to configure this intent receiver so that it can get the SMS Receiving Event, 'android. provide R. telephony. sms_received event status indicates that the SMS has been received. We can go to androidmanifest. configure the following in XML: <er Android: Name = ". aggreger. smsreceiver "Android: enabled =" true "> <intent-filter> <action Android: Name =" android. provider. telephony. sms_received "/> </intent-filter> </Cycler> <Cycler Android: Name = ". aggreger. smsreceiver "Android: enabled =" true "> <intent-filter> <action Android: Name =" android. provider. telephony. sms_received "/> </intent-filter> </Cycler> to enable our application To receive SMS messages, you must specify the permissions first. <uses-Permission Android: Name = "android. permission. receive_sms "> </uses-Permission> <uses-Permission Android: Name =" android. permission. receive_sms "> </uses-Permission> now, our intent receiver can be called when the Android device receives SMS, the rest is to get and display the received SMS message text: Public void onreceive (context, intent) {bundle = intent. getextras (); object messages [] = (object []) Bundle. get ("PDUS"); smsmessage [] = new smsmessage [messages. length]; for (INT n = 0; N & lt; messages. length; n ++) {smsmessage [N] = smsmessage. createfrompdu (byte []) messages [N]);} // show first message toast = toast. maketext (context, "received SMS:" + smsmessage [0]. getmessagebody (), toast. length_long); toast. show ();} public void onreceive (context, intent) {bun Dle bundle = intent. getextras (); object messages [] = (object []) bundle. get ("PDUS"); smsmessage [] = new smsmessage [messages. length]; for (INT n = 0; N & lt; messages. length; n ++) {smsmessage [N] = smsmessage. createfrompdu (byte []) messages [N]);} // show first messagetoast toast = toast. maketext (context, "received SMS:" + smsmessage [0]. getmessagebody (), toast. length_long); toast. show ();} android The SMS received by the device is in the form of a PDU (protocol description unit ). Android. telephony. GSM. the smsmessage class can store SMS-related information. We can also create a smsmessage instance from the received PDU, the toast interface component displays the received SMS message text in the form of system notifications. Run the program: Now let's run the application in the simulator and send the SMS message to the simulator. In the ddms view (Dalvik debug monitor service) provided by the android plug-in of Eclipse, we can send SMS messages to the simulator (in the 'emulator control' panel; in addition, you need to specify the phone number, but it can be any one.) public static final string music_action = "com. mythlink. music "; intent = new intent (); intent. setaction (music_action); intent. putextra ("music_path", songpath); this. sendbroadcast (intent); public static final string music_action = "com. mythlink. music "; intent = new intent (); intent. setaction (music_action); intent. putextra ("music_path", songpath); this. sendbroadcast (intent); you need to write another broadcast receiver public class musicreceiver extends broadcastreceiver {@ override public void onreceive (context, intent) {bundle = intent. getextras (); string music_path = bundle. getstring ("music_path"); Toast = toast. maketext (context, "playing music:" + music_path, toast. length_long); toast. show () ;}} public class musicreceiver extends broadcastreceiver {@ overridepublic void onreceive (context, intent) {bundle = intent. getextras (); string music_path = bundle. getstring ("music_path"); Toast = toast. maketext (context, "playing music:" + music_path, toast. length_long); toast. show () ;}} get the contact information public class contactslist extends listactivity {private listadapter madapter; @ override protected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); cursor c = This. getcontentresolver (). query (contacts. people. content_uri, null, null); this. startmanagingcursor (c); string [] Columns = new string [] {contacts. people. name}; int [] names = new int [] {R. id. SONG}; // madapter = new simplecursoradapter (this, R. layout. song_item, C, columns, names); this. setlistadapter (madapter) ;}@ override protected void onlistitemclick (listview L, view V, int position, long ID) {super. onlistitemclick (L, V, position, ID); intent I = new intent (intent. action_call); cursor c = (cursor) madapter. getitem (position); long phoneid = C. getlong (C. getcolumnindex (contacts. people. primary_phone_id); I. setdata (contenturis. withappendedid (contacts. phones. content_uri, phoneid); this. startactivity (I) ;}} public class contactslist extends listactivity {private listadapter madapter; @ overrideprotected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); cursor c = This. getcontentresolver (). query (contacts. people. content_uri, null, null); this. startmanagingcursor (c); string [] Columns = new string [] {contacts. people. name}; int [] names = new int [] {R. id. SONG}; // madapter = new simplecursoradapter (this, R. layout. song_item, C, columns, names); this. setlistadapter (madapter) ;}@ overrideprotected void onlistitemclick (listview L, view V, int position, long ID) {super. onlistitemclick (L, V, position, ID); intent I = new intent (intent. action_call); cursor c = (cursor) madapter. getitem (position); long phoneid = C. getlong (C. getcolumnindex (contacts. people. primary_phone_id); I. setdata (contenturis. withappendedid (contacts. phones. content_uri, phoneid); this. startactivity (I) ;}} in androidmanifest. add <uses-Permission Android: Name = "android. permission. read_contacts "/> <activity Android: Name = ". contactslist "Android: Label =" @ string/app_name "> <intent-filter> <action Android: Name =" android. intent. action. main "/> <category Android: Name =" android. intent. category. launcher "/> </intent-filter> </activity>