Java 在Android应用程序中为每个联系人获取生日

在我的android应用程序中，我用以下代码读取所有联系人：

ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0) {
    while (cur.moveToNext()) {
        String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
        String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
        ContentResolver bd = getContentResolver();
        String where = Data.RAW_CONTACT_ID+" = "+id+" and "+Data.MIMETYPE+" = "+CommonDataKinds.Event.CONTENT_ITEM_TYPE;
        Cursor bdc = bd.query(ContactsContract.Data.CONTENT_URI, null, where, null, null);
        if (bdc.getCount() > 0) {
            while (bdc.moveToNext()) {
                String birthday = bdc.getString(0);
                Toast.makeText(getApplicationContext(), id+name+birthday, Toast.LENGTH_SHORT);
            }
        }
    }
}
cur.close();

ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0) {
    while (cur.moveToNext()) {
        String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
        String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
        ContentResolver bd = getContentResolver();
        Cursor bdc = bd.query(android.provider.ContactsContract.Data.CONTENT_URI, new String[] { Event.DATA }, android.provider.ContactsContract.Data.CONTACT_ID+" = "+id+" AND "+Data.MIMETYPE+" = '"+Event.CONTENT_ITEM_TYPE+"' AND "+Event.TYPE+" = "+Event.TYPE_BIRTHDAY, null, android.provider.ContactsContract.Data.DISPLAY_NAME);
        if (bdc.getCount() > 0) {
            while (bdc.moveToNext()) {
                String birthday = bdc.getString(0);
                // now "id" is the user's unique ID, "name" is his full name and "birthday" is the date and time of his birth
            }
        }
    }
}
cur.close();

这就是我试图为每一个联系人读出生日事件的方式。但很明显，它还不起作用。那么我怎样才能正确读出联系人的出生日期呢

ContentResolver cr = getContentResolver();
String where = Data.raw_contacts_id + " = your_id and " + Data.MIMETYPE + " = " +  CommonDataKinds.Events.CONTENT_ITEM_TYPE;
cr.query(ContactsContract.Data.CONTENT_URI, null, where, null, null);

我没有测试代码，因为我没有在我的计算机上安装sdk。但我相信它应该会起作用。

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希望它能在某些方面对您有所帮助。

您可以通过以下代码读出所有用户的生日：

ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0) {
    while (cur.moveToNext()) {
        String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
        String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
        ContentResolver bd = getContentResolver();
        String where = Data.RAW_CONTACT_ID+" = "+id+" and "+Data.MIMETYPE+" = "+CommonDataKinds.Event.CONTENT_ITEM_TYPE;
        Cursor bdc = bd.query(ContactsContract.Data.CONTENT_URI, null, where, null, null);
        if (bdc.getCount() > 0) {
            while (bdc.moveToNext()) {
                String birthday = bdc.getString(0);
                Toast.makeText(getApplicationContext(), id+name+birthday, Toast.LENGTH_SHORT);
            }
        }
    }
}
cur.close();

ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
if (cur.getCount() > 0) {
    while (cur.moveToNext()) {
        String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
        String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
        ContentResolver bd = getContentResolver();
        Cursor bdc = bd.query(android.provider.ContactsContract.Data.CONTENT_URI, new String[] { Event.DATA }, android.provider.ContactsContract.Data.CONTACT_ID+" = "+id+" AND "+Data.MIMETYPE+" = '"+Event.CONTENT_ITEM_TYPE+"' AND "+Event.TYPE+" = "+Event.TYPE_BIRTHDAY, null, android.provider.ContactsContract.Data.DISPLAY_NAME);
        if (bdc.getCount() > 0) {
            while (bdc.moveToNext()) {
                String birthday = bdc.getString(0);
                // now "id" is the user's unique ID, "name" is his full name and "birthday" is the date and time of his birth
            }
        }
    }
}
cur.close();

---

但是有更好或更短的方法吗？

警告：一些OEM提供自己的联系人提供商（不是标准的Android），可能不遵循标准的Android实践。例如，com.android.providers.contacts.HtcContactsProvider2会响应有关my HTC Desire HD的查询

这里有一个方法：

// 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);
}

---

如果这不起作用，您可能需要OEM修改的联系人提供商。

谢谢！我在问题中添加了你的代码片段。这就是你的本意吗？是的，我试过了。不幸的是，它还不起作用。它通过联系人的外循环，但只进入生日的内循环一次（String birthday=bdc.getString（0））。而进入内部循环的联系人没有生日设置。谢谢！你也可以把这个问题联系起来；）