如何按即将到来的生日顺序获取联系人?
问题内容:
我有用于阅读联系方式和阅读生日的代码。但是,如何按即将到来的生日顺序获取联系人列表?
对于由标识的单个联系人id
,我将获得以下详细信息和生日:
Cursor c = null;
try {
Uri uri = ContentUris.withAppendedId(
ContactsContract.Contacts.CONTENT_URI, id);
c = ctx.getContentResolver().query(uri, null, null, null, null);
if (c != null) {
if (c.moveToFirst()) {
DatabaseUtils.cursorRowToContentValues(c, data);
}
}
c.close();
// read birthday
c = ctx.getContentResolver()
.query(
Data.CONTENT_URI,
new String[] { Event.DATA },
Data.CONTACT_ID + "=" + id + " AND "
+ Data.MIMETYPE + "= '"
+ Event.CONTENT_ITEM_TYPE + "' AND "
+ Event.TYPE + "=" + Event.TYPE_BIRTHDAY,
null, Data.DISPLAY_NAME);
if (c != null) {
try {
if (c.moveToFirst()) {
this.setBirthday(c.getString(0));
}
} finally {
c.close();
}
}
return super.load(id);
} catch (Exception e) {
Log.v(TAG(), e.getMessage(), e);
e.printStackTrace();
return false;
} finally {
if (c != null)
c.close();
}
读取所有联系人的代码是:
public Cursor getList() {
// Get the base URI for the People table in the Contacts content
// provider.
Uri contacts = ContactsContract.Contacts.CONTENT_URI;
// Make the query.
ContentResolver cr = ctx.getContentResolver();
// Form an array specifying which columns to return.
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME };
Cursor managedCursor = cr.query(contacts, projection, null, null,
ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC");
return managedCursor;
}
问题答案:
我以相反的方式进行了此操作-直接选择存储生日的数据表。
private static final int UPCOMING_COUNT = 10;
public static List<BContact> upcomingBirthday(Context ctx) {
String today = new SimpleDateFormat("MM-dd").format(new Date());
List<BContact> firstPart = upcomingBirthday(ctx, today, "12-31", UPCOMING_COUNT);
if (firstPart.size() < UPCOMING_COUNT) {
firstPart.addAll(upcomingBirthday(ctx, "01-01", today, UPCOMING_COUNT - firstPart.size()));
}
return firstPart;
}
public static List<BContact> upcomingBirthday(Context ctx, String fromDate, String toDate, int rows) {
Uri dataUri = ContactsContract.Data.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts.DISPLAY_NAME,
ContactsContract.CommonDataKinds.Event.CONTACT_ID,
ContactsContract.CommonDataKinds.Event.START_DATE
};
Cursor c = ctx.getContentResolver().query(
dataUri,
projection,
ContactsContract.Data.MIMETYPE + "= ? AND " +
ContactsContract.CommonDataKinds.Event.TYPE + "=" + ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY +
" AND substr(" + ContactsContract.CommonDataKinds.Event.START_DATE + ",6) >= ?" +
" AND substr(" + ContactsContract.CommonDataKinds.Event.START_DATE + ",6) <= ?" ,
new String[] {ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE, fromDate, toDate},
"substr("+ ContactsContract.CommonDataKinds.Event.START_DATE +",6)");
List<BContact> result = new ArrayList<BContact>();
int i=0;
while (c.moveToNext() && i<rows) {
result.add(new BContact(c.getString(0), c.getString(1), c.getString(2)));
i++;
}
c.close();
return result;
}
SELECT被两次调用-从今天到12/31的一次呼叫,从01/01到今天的第二次呼叫。我限制返回的行数为10,但这不是必需的。
编辑:
我发现这不适用于所有Android手机,因为生日日期以许多不同的格式存储。因此,您必须加载所有生日(无序),对其进行解析并在内存中进行排序。#失败