I am working on Android activity in which I have to select contacts from ListView and write their numbers in .csv file.
However I managed to write all contacts numbers from contacts on button click. But now I want to select contact from ListView and on click button only selected contacts should be written in file.
I am providing my code, kindly tell me how can I achieve this?
upload_contacts.java :
public class Upload_Contacts extends ListActivity {
private String[] arraySpinner;
Spinner spin ;
String adi;
ToggleButton rdb;
private Cursor cursor;
private boolean csv_status = false;
Button btn;
public String[] Contacts = {};
public int[] to = {};
public ListView myListView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.p_contacts);
btn=(Button)findViewById(R.id.btvc);
rdb=(ToggleButton)findViewById(R.id.rdb);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
createCSV();// here I can write all contacts to file. I want only selected contacts to write, and also if all contacts selected they should also be written in file////
String selected = "";
int cntChoice = myListView.getCount();
SparseBooleanArray sparseBooleanArray = myListView.getCheckedItemPositions();
for(int i = 0; i < cntChoice; i++){
if(sparseBooleanArray.get(i)) {
selected += myListView.getItemAtPosition(i).toString() + "\n";
}
}
Toast.makeText(Upload_Contacts.this,
selected, //android.content.ContentResolver $CursorWrapperInner@635D555
// here i want to show number against the contact selected .
Toast.LENGTH_LONG).show();
}
});
Cursor mCursor = getContacts();
startManagingCursor(mCursor);
// here showing contacts in listview with check box..
ListAdapter adapter2 = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_multiple_choice, mCursor,
Contacts = new String[] {ContactsContract.Contacts.DISPLAY_NAME },
to = new int[] { android.R.id.text1 });
setListAdapter(adapter2);
myListView = getListView();
myListView.setItemsCanFocus(false);
myListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
// here I checked all the contacts in list view
rdb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Toast.makeText(InCallScreen.this, "selected all", Toast.LENGTH_SHORT).show();
if(rdb.isChecked()){
rdb.setBackgroundColor(Color.parseColor("#FBE039"));
rdb.setTextColor(Color.parseColor("#000000"));
for (int i = 0; i < myListView.getCount(); i++)
myListView.setItemChecked(i, true);
}
else{
rdb.setBackgroundColor(Color.parseColor("#333333"));
rdb.setTextColor(Color.parseColor("#ffffff"));
for (int i = 0; i < myListView.getCount(); i++)
myListView.setItemChecked(i, false);
}
}
});
}
// here showing contacts name in listview..
private Cursor getContacts() {
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME};
String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = '"
+ ("1") + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC";
return managedQuery(uri, projection, selection, selectionArgs,
sortOrder);
}
private void createCSV() {
CSVWriter writer = null;
try {
writer = new CSVWriter(new FileWriter(Environment.getExternalStorageDirectory().getAbsolutePath() + "/my_test_contact.csv"));
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
String displayName;
String number;
long _id;
String columns[] = new String[]{ ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME };
writer.writeColumnNames(); // Write column header
Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,
columns,
null,
null,
ContactsContract.Data.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
startManagingCursor(cursor);
if(cursor.moveToFirst()) {
do {
_id = Long.parseLong(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID)));
//displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)).trim();
number = getPrimaryNumber(_id);
// Log.d("numbers", number+" ");
writer.writeNext((/*displayName + */ "/" + number).split("/"));
} while(cursor.moveToNext());
csv_status = true;
} else {
csv_status = false;
}
try {
if(writer != null)
writer.close();
} catch (IOException e) {
Log.w("Test", e.toString());
}
}// Method close.
private void exportCSV() {
if(csv_status == true) {
//CSV file is created so we need to Export that ...
final File CSVFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/my_test_contact.csv");
//Log.i("SEND EMAIL TESTING", "Email sending");
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent.setType("text/csv");
emailIntent .putExtra(android.content.Intent.EXTRA_SUBJECT, "Test contacts ");
emailIntent .putExtra(android.content.Intent.EXTRA_TEXT, "\n\nAdroid developer\n Adnan");
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + CSVFile.getAbsolutePath()));
emailIntent.setType("message/rfc822"); // Shows all application that supports SEND activity
try {
startActivity(Intent.createChooser(emailIntent, "Send mail..."));
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(getApplicationContext(), "Email client : " + ex.toString(), Toast.LENGTH_SHORT);
}
} else {
Toast.makeText(getApplicationContext(), "Information not available to create CSV.", Toast.LENGTH_SHORT).show();
}
}
/**
* Get primary Number of requested id.
*
* @return string value of primary number.
*/
private String getPrimaryNumber(long _id) {
String primaryNumber = null;
try {
Cursor cursor = getContentResolver().query( ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
new String[]{Phone.NUMBER, Phone.TYPE},
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ _id, // We need to add more selection for phone type
null,
null);
if(cursor != null) {
while(cursor.moveToNext()){
switch(cursor.getInt(cursor.getColumnIndex(Phone.TYPE))){
case Phone.TYPE_MOBILE :
primaryNumber = cursor.getString(cursor.getColumnIndex(Phone.NUMBER));
break;
case Phone.TYPE_HOME :
primaryNumber = cursor.getString(cursor.getColumnIndex(Phone.NUMBER));
break;
case Phone.TYPE_WORK :
primaryNumber = cursor.getString(cursor.getColumnIndex(Phone.NUMBER));
break;
default:
primaryNumber = cursor.getString(cursor.getColumnIndex(Phone.NUMBER));
}
if(primaryNumber != null)
break;
}
}
} catch (Exception e) {
Log.i("test", "Exception " + e.toString());
} finally {
if(cursor != null) {
cursor.deactivate();
cursor.close();
}
}
return primaryNumber;
}
}
What should I do in create.csv method so that I can get selected contacts from listview and write only their numbers to .csv file?
Edited:
I have solved the problem.
Here custom adapter is used to achieve the task. Now activity have a list of phone contacts and you can select the contacts from check boxes and write their numbers in a .csv file. Here the csv writer class:
CSVwriter.java:
public class CSVWriter {
private PrintWriter pw;
private char separator;
private char quotechar;
private char escapechar;
private String lineEnd;
/** The character used for escaping quotes. */
public static final char DEFAULT_ESCAPE_CHARACTER = '\u0000';
/** The default separator to use if none is supplied to the constructor. */
public static final char DEFAULT_SEPARATOR = '\n';
/**
* The default quote character to use if none is supplied to the
* constructor.
*/
public static final char DEFAULT_QUOTE_CHARACTER = '\u0000';
/** The quote constant to use when you wish to suppress all quoting. */
public static final char NO_QUOTE_CHARACTER = '\u0000';
/** The escape constant to use when you wish to suppress all escaping. */
public static final char NO_ESCAPE_CHARACTER = '\u0000';
/** Default line terminator uses platform encoding. */
public static final String DEFAULT_LINE_END = "\n";
/** Default column name. */
public static final String DEFAULT_COLUMN_NAME = "Phone Number";
/**
* Constructs CSVWriter using a comma for the separator.
*
* @param writer
* the writer to an underlying CSV source.
*/
public CSVWriter(Writer writer) {
this(writer, DEFAULT_SEPARATOR, DEFAULT_QUOTE_CHARACTER,
DEFAULT_ESCAPE_CHARACTER, DEFAULT_LINE_END);
}
/**
* Constructs CSVWriter with supplied separator, quote char, escape char and line ending.
*
* @param writer
* the writer to an underlying CSV source.
* @param separator
* the delimiter to use for separating entries
* @param quotechar
* the character to use for quoted elements
* @param escapechar
* the character to use for escaping quotechars or escapechars
* @param lineEnd
* the line feed terminator to use
*/
public CSVWriter(Writer writer, char separator, char quotechar, char escapechar, String lineEnd) {
this.pw = new PrintWriter(writer);
this.separator = separator;
this.quotechar = quotechar;
this.escapechar = escapechar;
this.lineEnd = lineEnd;
}
/**
* Writes the next line to the file.
*
* @param nextLine
* a string array with each comma-separated element as a separate
* entry.
*/
public void writeNext(String[] nextLine) {
if (nextLine == null)
return;
StringBuffer sb = new StringBuffer();
for (int i = 0; i < nextLine.length; i++) {
if (i != 0) {
sb.append(separator);
}
String nextElement = nextLine[i];
if (nextElement == null)
continue;
if (quotechar != NO_QUOTE_CHARACTER)
sb.append(quotechar);
for (int j = 0; j < nextElement.length(); j++) {
char nextChar = nextElement.charAt(j);
if (escapechar != NO_ESCAPE_CHARACTER && nextChar == quotechar) {
sb.append(escapechar).append(nextChar);
} else if (escapechar != NO_ESCAPE_CHARACTER && nextChar == escapechar) {
sb.append(escapechar).append(nextChar);
} else {
sb.append(nextChar);
}
}
if (quotechar != NO_QUOTE_CHARACTER)
sb.append(quotechar);
}
sb.append(lineEnd);
pw.write(sb.toString());
}
public void writeColumnNames() {
writeNext(DEFAULT_COLUMN_NAME.split(","));
}
/**
* Flush underlying stream to writer.
*
* @throws IOException if bad things happen
*/
public void flush() throws IOException {
pw.flush();
}
/**
* Close the underlying stream writer flushing any buffered content.
*
* @throws IOException if bad things happen
*
*/
public void close() throws IOException {
pw.flush();
pw.close();
}
}
