[英]Getting details of only those contacts whose birthday exists in the contact database (Android)
我正在嘗試查詢聯系人提供者並獲取聯系人信息,到目前為止我成功列出了這些信息,但是我更感興趣的是檢索那些指定了出生日期的聯系人的信息。 到目前為止,我的代碼如下所示:
public class LoaderClass extends Activity implements LoaderCallbacks<Cursor>{
// private ProgressDialog pDialog;
// Async as;
TextView t1, t2;
Locale current;
Uri uri;
String[] projection;
String where;
public static final int progress_bar_type = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.loader_class);
t1 = (TextView) findViewById(R.id.textView1);
t2 = (TextView) findViewById(R.id.textView2);
t1.setText("");
current = getResources().getConfiguration().locale;
// new Async().execute();
uri = ContactsContract.Data.CONTENT_URI;
projection = new String[] {
// take from the contacts
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Event.CONTACT_ID,
ContactsContract.CommonDataKinds.Event.START_DATE,
ContactsContract.CommonDataKinds.Phone.NUMBER,
ContactsContract.CommonDataKinds.StructuredPostal.FORMATTED_ADDRESS,
ContactsContract.CommonDataKinds.Photo.PHOTO
};
where = ContactsContract.Data.MIMETYPE + "= ? AND "
+ ContactsContract.CommonDataKinds.Event.TYPE + "="
+ ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY;
String[] selectionArgs = new String[] { ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE };
getLoaderManager().initLoader(0, null, this);
}
@Override
public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
CursorLoader loader = new CursorLoader(
this,
uri,
projection,
null,
null,
null);
return loader;
}
@Override
public void onLoadFinished(
Loader<Cursor> loader,
Cursor cursor) {
while (cursor.moveToNext()) {
String displayBirthday = cursor
.getString(cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Event.START_DATE));
String name = cursor.getString(cursor
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String ename = cursor.getString(cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Email.ADDRESS));
t1.append("\n"+displayBirthday+"\n"+name+"\n"+ename);
}
}
@Override
public void onLoaderReset(Loader<Cursor> arg0) {
// TODO Auto-generated method stub
}
}
我想設計一個 where 子句,但我無法理解如何。
請使用以下查詢:
String[] projectionFields = new String[]{
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
};
ArrayList<Contact> listContacts = new ArrayList<>();
CursorLoader cursorLoader = new CursorLoader(context,
ContactsContract.Contacts.CONTENT_URI,
projectionFields, // the columns to retrieve
null, // the selection criteria (none)
null, // the selection args (none)
null // the sort order (default)
);
Cursor c = cursorLoader.loadInBackground();
final Map<String, SynchData.clientsData> contactsMap = new HashMap<>(c.getCount());
if(c.moveToFirst()){
int idIndex = c.getColumnIndex(ContactsContract.Contacts._ID);
int nameIndex = c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
do {
String contactId = c.getString(idIndex);
String where = ContactsContract.Data.CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ? AND " +
ContactsContract.CommonDataKinds.Event.TYPE + " = " + ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY;
String[] selectionArgs = new String[]{id, ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE};
Cursor birthDateCur = cr.query(ContactsContract.Data.CONTENT_URI, null, where, selectionArgs, null);
while (birthDateCur.moveToNext()) {
birthDate = birthDateCur.getString(birthDateCur.getColumnIndex(ContactsContract.CommonDataKinds.Event.START_DATE));
if (birthDate != null && !birthDate.equalsIgnoreCase("")) {
if (!birthDate.equalsIgnoreCase("")) {
print(" birthDate " + birthDate);
break;
}
}
}
birthDateCur.close();
} while (c.moveToNext());
}
c.close();
// method to get name, contact id, and birthday
private Cursor getContactsBirthdays() {
Uri uri = ContactsContract.Data.CONTENT_URI;
String[] projection = new String[] {
ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Event.CONTACT_ID,
ContactsContract.CommonDataKinds.Event.START_DATE
};
String where =
ContactsContract.Data.MIMETYPE + "= ? AND " +
ContactsContract.CommonDataKinds.Event.TYPE + "=" +
ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY;
String[] selectionArgs = new String[] {
ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE
};
String sortOrder = null;
return managedQuery(uri, projection, where, selectionArgs, sortOrder);
}
// iterate through all Contact's Birthdays and print in log
Cursor cursor = getContactsBirthdays();
int bDayColumn = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Event.START_DATE);
while (cursor.moveToNext()) {
String bDay = cursor.getString(bDayColumn);
Log.d(TAG, "Birthday: " + bDay);
}
制作 where 子句:
String where =
ContactsContract.Data.MIMETYPE + "= ? AND " +
ContactsContract.CommonDataKinds.Event.TYPE + "=" +
ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY;
並替換您的以下行:
@SuppressWarnings("deprecation")
Cursor cursor = managedQuery(uri, projection, null, null,
sortOrder);
有了這個
Cursor cursor = managedQuery(uri, projection, where, null,
sortOrder);
不要驚慌,只需從所有聯系人中列出一個列表。 第 2 步:現在我認為您獲取所有聯系信息,第 3 步:將其保存在一個包裝類中,然后:
ArrayList<String> matchname = new ArrayList<String>();
for(int k =0;k<yourcontactwrapperlist.size();k++)
{
String keyname = yourcontactwrapperlist.get(i).yourgettermethodnameforbirthday();
if((keyname.trim().size()<0))
{
matchname.add(keyname);
}
}
}
然后在臨時列表中,您將獲得要顯示的所有數據。
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