我尝试编写应用程序以读取联系人的姓名，姓氏和ID并在listview中显示，我使用以下代码
Cursor cursor = getContentResolver().query(
ContactsContract.Contacts.CONTENT_URI, null, null,
null, null);
SmsMultiCasting.selectedRow = new int[cursor.getCount()];
cursor.moveToFirst();
// data = new String[cursor.getCount()][12];
if (cursor.getCount() > 0) {
do {
try {
i++;
Log.d("number", String.valueOf(i));
// numberPhone = 0;
contactId = cursor
.getString(cursor
.getColumnIndex(ContactsContract.Contacts._ID));
Uri contactUri = ContentUris.withAppendedId(
Contacts.CONTENT_URI,
Long.parseLong(contactId));
Uri dataUri = Uri.withAppendedPath(contactUri,
Contacts.Data.CONTENT_DIRECTORY);
Cursor phones = getContentResolver()
.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ " = " + contactId, null,
null);
int phonenumber = 0;
while (phones.moveToNext()) {
phonenumber++;
}
if (phonenumber > 0)
// phones.moveToNext();
{
try {
Cursor nameCursor = getContentResolver()
.query(dataUri,
null,
Data.MIMETYPE + "=?",
new String[] { StructuredName.CONTENT_ITEM_TYPE },
null);
nameCursor.moveToFirst();
do {
String firstName = nameCursor
.getString(nameCursor
.getColumnIndex(Data.DATA2));
String lastName = "";
String displayname = cursor
.getString(cursor
.getColumnIndex(Contacts.DISPLAY_NAME_ALTERNATIVE));
if (!firstName.equals(displayname)) {
lastName = nameCursor
.getString(nameCursor
.getColumnIndex(Data.DATA3));
}
if (firstName.equals(null)
&& lastName.equals(null))
SmsMultiCasting.Arrayefullname
.add("unknown name");
else if (firstName.equals(null))
SmsMultiCasting.Arrayefullname
.add(lastName);
else if (lastName.equals(null))
SmsMultiCasting.Arrayefullname
.add(firstName);
else
SmsMultiCasting.Arrayefullname
.add(firstName + " "
+ lastName);
SmsMultiCasting.Arrayeid.add(String
.valueOf(firstName + " "
+ lastName + "//"
+ contactId));
} while (nameCursor.moveToNext());
nameCursor.close();
} catch (Exception e) {
}
}
}
catch (Exception t) {
}
String image_uri = cursor
.getString(cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));
SmsMultiCasting.ArrayePhoto.add(image_uri);
*/
} while (cursor.moveToNext());
但是大日期的这段代码给我带来了错误，我如何使用更轻的代码来获取数据？