我正在尝试使用此代码阅读联系人,但它只获取联系人而不是联系人数据。请 告诉我,我走错了路或者这有什么问题。
Cursor contacts = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
while(contacts.moveToNext()) {
int contactIdColumnIndex = contacts.getColumnIndex(ContactsContract.Contacts._ID);
long contactId = contacts.getLong(contactIdColumnIndex);
System.out.println(contactId);
Cursor c = getContentResolver().query(Data.CONTENT_URI,
new String[] {Data._ID, Phone.NUMBER, Phone.TYPE},
Data.CONTACT_ID + "=?" + " AND "
+ Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'",
new String[] {String.valueOf(contactId)}, null);
//retrieving data
while(c.moveToNext()){
long Id=c.getLong(0);
String number=c.getString(1);
String type=c.getString(2);
String name=c.getString(3);
System.out.println(Id);
System.out.println(number);
System.out.println(type);
System.out.println(name);
}
c.close();
}
contacts.close();
这在我调试它时运行良好,它只打印ContactIds 1 2 3 4
但没有数据...(为长期问题道歉)
答案 0 :(得分:1)
试试这段代码
String number = "";
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));
if (Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
new String[]{ContactsContract.CommonDataKinds.Phone.NUMBER},
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
for(int i=0;i<pCur.getColumnCount();i++)
number = pCur.getString(i);
}
pCur.close();
pCur = null;
}
}
}
cur.close();
cur = null;
cr = null;