Android --- 47 --- SMS group function, android --- 47 ---

Android --- 47 --- SMS group function, android --- 47 ---

A dialog box with a list is provided for you to select the number of recipients who send Group messages. The program uses an ArrayList <String> set to save the number of all recipients.
To implement the group function, the program cyclically traverses the numbers in the ArrayList and sends SMS messages to each number in turn.

Public class MainActivity extends Activity {EditText numbers, content; Button select, send; SmsManager smsManager; // record list ArrayList <String> sendlist = new ArrayList <String> (); @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main); smsManager = SmsManager. getDefault (); numbers = (EditText) findViewById (R. id. numbers); content = (EditText) findViewById (R. id. content); select = (Button) findViewById (R. id. select); send = (Button) findViewById (R. id. send); send. setOnClickListener (new OnClickListener () {@ SuppressWarnings ("deprecation") @ Overridepublic void onClick (View v) {// send text messages one by one for (String number: sendlist) {PendingIntent pi = PendingIntent. getActivity (MainActivity. this, 0, new Intent (), 0); smsManager. sendTextMessage (number, null, content. getText (). toString (), pi, null);} Toast. makeText (MainActivity. this, "message sending completed", 8000 ). show () ;}}); // select the contact. setOnClickListener (new OnClickListener () {@ Overridepublic void onClick (View v) {// query the contact's phone number // ContentResolver. query (Uri uri, String [] projection, String // selection, String [] selectionArgs, String sortOrder) final Cursor cursor = getContentResolver (). query (ContactsContract. commonDataKinds. phone. CONTENT_URI, null, null); BaseAdapter adapter = new BaseAdapter () {@ Overridepublic int getCount () {// TODO Auto-generated method stubreturn cursor. getCount () ;}@ Overridepublic Object getItem (int position) {// TODO Auto-generated method stubreturn position ;}@ Overridepublic long getItemId (int position) {// TODO Auto-generated method stubreturn position;} @ Overridepublic View getView (int position, View convertView, ViewGroup parent) {cursor. moveToPosition (position); CheckBox rb = new CheckBox (MainActivity. this); // obtain the contact's phone number, and remove the middle strip and space String number = cursor. getString (cursor. getColumnIndex (CommonDataKinds. phone. NUMBER )). replace ("-",""). replace ("", ""); rb. setText (number); if (isChecked (number) {rb. setChecked (true) ;}return rb ;}; // load list. view page corresponding to the xml layout file: View selectView = getLayoutInflater (). inflate (R. layout. list, null); // obtain the list component final ListView = (listView) selectView in selectView. findViewById (R. id. list); listView. setAdapter (adapter); new AlertDialog. builder (MainActivity. this ). setView (selectView ). setPositiveButton ("OK", new DialogInterface. onClickListener () {@ Overridepublic void onClick (DialogInterface dialog, int which) {// clear sendlist. clear (); // traverse each list item of the listView component for (int I = 0; I <listView. getCount (); I ++) {CheckBox checkBox = (CheckBox) listView. getChildAt (I); // if this list item is checked if (checkBox. isChecked () {// Add the phone number sendlist for this list item. add (checkBox. getText (). toString () ;}} numbers. setText (sendlist. toString ());}}). show () ;}}) ;}// determine whether a number is in the group range public boolean isChecked (String phone) {for (String s1: sendlist) {if (s1.equals (phone) {return true ;}} return false ;}}

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