Develop Reference

How to get the Contact Names of Array of ContactNumbers from Contacts in Android?

I have a requirement when I need to get the Contact name of the selected numbers from the ANDROID_CONTACTS.
I can get the name of a particular number using ->
Uri uri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber));
Cursor cursor = cr.query(uri, new String[]{ContactsContract.PhoneLookup.DISPLAY_NAME}, null, null, null);
if (cursor == null) {
return;
}
How can I pass a list of numbers and get their respective names?

Here's the naive approach:
String[] phones = new String[] { "(212) 555-1111", "(212) 555-2222", "(212) 555-3333"};
String selection = Phone.NUMBER + "IN (?,?,?)";
String[] selectionArgs = phones;
String[] projection = new String[] { Phone.NUMBER, Phone.CONTACT_ID, Phone.DISPLAY_NAME };
Cursor cur = getContentResolver().query(Phone.CONTENT_URI, projection, selection, selectionArgs, null);
DatabaseUtils.dumpCursor(cur); // dumps the cursor to logcat
However, this will only work if you enter the phone number in exactly the same format as it is stored in the ContactsContract DB under NUMBER.
The nice thing about the PhoneLookup.CONTENT_FILTER_URI API you've used is that the format of the number doesn't matter, it'll find it in the DB in any format you use.
To replicate something like that, you can try using another field called NORMALIZED_NUMBER which should always hold the number in a specific format called E164.
So you can run a query like this:
String[] e164_phones = new String[] { "+12125551111", "+12125552222", "+12125553333"};
String selection = Phone.NUMBER + "IN (?,?,?)";
String[] selectionArgs = e164_phones; // all phones here must be in e164 format
String[] projection = new String[] { Phone.NUMBER, Phone.CONTACT_ID, Phone.DISPLAY_NAME };
Cursor cur = getContentResolver().query(Phone.CONTENT_URI, projection, selection, selectionArgs, null);
You'll probably need a way to convert a phone number to E164 format for this code, check out this answer then.

How to display SQL query of a CursorLoader

I would like to display in the Log.d the current SQL query being generated by a CursorLoader in the onCreateLoader method such as:
return new CursorLoader(
getActivity(), // Parent activity context
WifiEntry.CONTENT_URI, // Provider content URI to query
projection, // Columns to include in the resulting Cursor
null, // No selection clause
null, // No selection arguments
WifiEntry.COLUMN_WIFI_NAME + " ASC");
I have looked at the Android docs, and in here, but no success. It is useful to debugging purposes to be able to visualize the SQL string.
Thanks!
UPDATE. I am adding the ContentProvider query method, anybody can answer how to display in the Log the resulting SQL query?
Thanks.
#Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder)
{
// Get readable database
SQLiteDatabase database = mDbHelper.getReadableDatabase();
// This cursor will hold the result of the query
Cursor cursor;
// Figure out if the URI matcher can match the URI to a specific code
int match = sUriMatcher.match(uri);
switch (match)
{
case WIFIS:
// For the WIFIS code, query the wifi table directly with the given
// projection, selection, selection arguments, and sort order. The cursor
// could contain multiple rows of the pets table.
cursor = database.query(WifiEntry.TABLE_NAME, projection, selection, selectionArgs,
null, null, sortOrder);
break;
case WIFI_ID:
// For the WIFI_ID code, extract out the ID from the URI.
// the selection will be "_id=?"
selection = WifiEntry._ID + "=?";
selectionArgs = new String[] { String.valueOf(ContentUris.parseId(uri)) };
cursor = database.query(WifiEntry.TABLE_NAME, projection, selection, selectionArgs,
null, null, sortOrder);
break;
default:
throw new IllegalArgumentException("Cannot query, unknown URI " + uri);
}
cursor.setNotificationUri(getContext().getContentResolver(), uri);
// Return the cursor
return cursor;
}

Reversing a Uri variable

I am trying to reverse a Uri's order.
The Uri accesses the phones call logs
Uri allCalls = Uri.parse("content://call_log/calls");
but it stores them from oldest to newest while I want the opposite.
I tried using
Collections.reverse
but that only works for arrays.
Anyone know a solution?

You can input sorting option when you use ContentResover's query function.
query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)
Query the given URI, returning a Cursor over the result set.
public static Cursor getAllCallLogs(ContentResolver cr) {
// reading all data in descending order according to DATE
String strOrder = android.provider.CallLog.Calls.DATE + " DESC";
Uri callUri = Uri.parse("content://call_log/calls");
Cursor curCallLogs = cr.query(callUri, null, null, null, strOrder);
return curCallLogs;
}

Get details of contact in single query

Hi all I am trying to get contact information from the contact database using ContentResolver with these field want to get name, number, FORMATTED_ADDRESS, PHOTO
details for a contact in one single query.
So basically I need to make 3 queries per contact to obtain these
details.
What I want to know is that, is there a simpler and more efficient way
to achieve what this.
but using the below code i am getting exception.
java.lang.IllegalArgumentException: Invalid column data1
Can any body help me for finding the solution for the same.
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.StructuredPostal.FORMATTED_ADDRESS,
ContactsContract.CommonDataKinds.Photo.PHOTO};
String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = '1'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
Cursor contacts = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder);

Maybe problem will be at selection. Replace yours method with mine.
Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.StructuredPostal.FORMATTED_ADDRESS,
ContactsContract.CommonDataKinds.Photo.PHOTO};
String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = ?";
String[] selectionArgs = { String.valueOf(1) };
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
Cursor contacts = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder);
You should always use parametrized statements. Your approach is dangerous. And your URI was bad.

Here you go
Replace
ContactsContract.Contacts.CONTENT_URI;
with
ContactsContract.CommonDataKinds.Phone.CONTENT_URI;

data type mismatch error when using ORDER BY

I've got an android app using a local sqlite database.
private SQLiteDatabase mDb;
when I run this query I get my Cursor over rows with pid equal to id, as desired:
mDb.query(true, PT_TABLE, new String[] {KEY_PID, KEY_TID},
KEY_PID+" = "+id, null, null, null, null, null);
when I run the following query, aiming to get that same result set, ordered by pid I get "android.database.sqlite.SQLiteException: datatype mismatch"
mDb.query(true, PT_TABLE, new String[] {KEY_PID, KEY_TID},
KEY_PID+" = "+id, null, null, null, null, KEY_PID+" DESC");
Any ideas?

It looks like you got just a little mixed up. According to the SQLiteDatabase.query documentation, the last argument is the LIMIT clause. The second to last is the ORDER BY clause.
Cursor query (boolean distinct,
String table,
String[] columns,
String selection,
String[] selectionArgs,
String groupBy,
String having,
String orderBy, // <-- ORDER BY
String limit)
EDIT
But, there is also another SQLiteDatabase.query where ORDER BY would be last
Cursor query (String table,
String[] columns,
String selection,
String[] selectionArgs,
String groupBy,
String having,
String orderBy)

This worked for me
String filter = MySQLiteHelper.JOB_ID + "=" + Integer.toString(jobID);
String orderBy = MySQLiteHelper.LOG_TIME + " DESC";
Cursor cursor = database.query(MySQLiteHelper.LOG_TABLE_NAME, logTableColumns,
filter, null, null, null, orderBy);

KEY_PID + " = " + "'" + id + "'"

Since Orderby is the second last parameter in the query;
your query would be like this
mDb.query(true, PT_TABLE, new String[] {KEY_PID, KEY_TID},
KEY_PID+" = "+id, null, null, null, KEY_PID+" DESC", null);

If I correctly understood your problem, try this.
String[] columns = new String[] {KEY_PID, KEY_TID};
String where = KEY_PID + " = " + Integer.toString(id);
String orderBy = KEY_PID + " DESC";
Cursor cursor = mDb.query(PT_TABLE, columns, where, null, null, null, orderBy);