问题1。
我有这堂课：
public class ContactGroups {
// Form an array specifying which columns to return.
String[] projection = new String[] { Contacts.Groups._ID,
Contacts.Groups._COUNT, Contacts.Groups.NAME, Contacts.Groups.NOTES };
public Cursor getList(Activity act) {
Uri contacts = Contacts.Groups.CONTENT_URI;
// using the debugger code kills here
Cursor managedCursor = act.managedQuery(contacts, projection,
null,
null
, null
);
return managedCursor;
}
public ArrayList<String> getColumnData(Cursor cur) {
ArrayList<String> aa = new ArrayList<String>();
if (cur.moveToFirst()) {
String name;
String notes;
int nameColumn = cur.getColumnIndex(Contacts.Groups.NAME);
int notesColumn = cur.getColumnIndex(Contacts.Groups.NOTES);
do {
// Get the field values
name = cur.getString(nameColumn);
notes = cur.getString(notesColumn);
aa.add(name);
// Do something with the values.
} while (cur.moveToNext());
}
return aa;
}
}
我称之为：
ContactGroups mGrp= new ContactGroups();
final ArrayAdapter<String> aa;
aa = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,mGrp.getColumnData(mGrp.getList(this)));
myListView.setAdapter(aa);
并拥有：
<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
<uses-permission android:name="android.permission.WRITE_CONTACTS"></uses-permission>
我收到 Source not found 错误和 Logcat 错误
ERROR/DatabaseUtils(617): java.lang.IllegalArgumentException: Invalid column _count
有人知道为什么吗？
问题 2。
在哪里手动创建联系人组？