Following This Retrieving a List of Contacts Tutorial in the android developers site, I managed to implement contacts search functionality. Here is my code so far
private void retrieveContactRecord(String phoneNo) {
try {
Log.e("Info", "Input: " + phoneNo);
Uri uri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI,
Uri.encode(phoneNo));
String[] projection = new String[]{ContactsContract.PhoneLookup._ID, ContactsContract.PhoneLookup.DISPLAY_NAME};
String sortOrder = ContactsContract.PhoneLookup.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
ContentResolver cr = getContentResolver();
if (cr != null) {
Cursor resultCur = cr.query(uri, projection, null, null, sortOrder);
if (resultCur != null) {
while (resultCur.moveToNext()) {
String contactId = resultCur.getString(resultCur.getColumnIndex(ContactsContract.PhoneLookup._ID));
String contactName = resultCur.getString(resultCur.getColumnIndexOrThrow(ContactsContract.PhoneLookup.DISPLAY_NAME));
Log.e("Info", "Contact Id : " + contactId);
Log.e("Info", "Contact Display Name : " + contactName);
break;
}
resultCur.close();
}
}
} catch (Exception sfg) {
Log.e("Error", "Error in loadContactRecord : " + sfg.toString());
}
}
Here is the catch, this code works pretty great, but I need to implement a smart search here. I want 26268 to match Amanu as well as 094 526 2684. I believe it is called T9 dictionary.
I tried looking at other projects for clue, but I couldn't find anything. Any pointers would be appreciated!
The ContentProvider
for contacts doesn't support it. So what I did was to dump all of the contacts in a List
then use a RegEx
to match for the name.
public static String[] values = new String[]{" 0", "1", "ABC2", "DEF3", "GHI4", "JKL5", "MNO6", "PQRS7", "TUV8", "WXYZ9"};
/**
* Get the possible pattern
* You'll get something like ["2ABC","4GHI"] for input "14"
*/
public static List<String> possibleValues(String in) {
if (in.length() >= 1) {
List<String> p = possibleValues(in.substring(1));
String s = "" + in.charAt(0);
if (s.matches("[0-9]")) {
int n = Integer.parseInt(s);
p.add(0, values[n]);
} else {
// It is a character, use it as it is
p.add(s);
}
return p;
}
return new ArrayList<>();
}
.... Then compile the pattern. I used (?i)
to make it case insensitive
List<String> values = Utils.possibleValues(query);
StringBuilder sb = new StringBuilder();
for (String value : values) {
sb.append("[");
sb.append(value);
sb.append("]");
if (values.get(values.size() - 1) != value) {
sb.append("\\s*");
}
}
Log.e("Utils", "Pattern = " + sb.toString());
Pattern queryPattern = Pattern.compile("(?i)(" + sb.toString() + ")");
You'll know what to do after this.