sqlite資料庫中第一條資料查不出來！
阿新 • • 發佈：2019-02-07
/**
* * Title: selectAllPhone *Description:查詢所有的Phone物件 * @return * @see
* com.sms.ntlm.dao.PhoneDao#selectAllPhone()
*/
@SuppressLint("SimpleDateFormat")
@SuppressWarnings("deprecation")
@Override
public List<Phone> selectAllPhone() {
Cursor cursor=null;
List<Phone> list=new ArrayList<Phone>();
String sql="select * from "+PhoneSQLConstant.TABLE_NAME+";";
db=mOpenHelper.getWritableDatabase();
if(mOpenHelper!=null && db.isOpen()){
// cursor=db.query(PhoneSQLConstant.TABLE_NAME, null, null, null, null, null, null);
cursor=db.rawQuery(sql, null);
}
if (cursor != null) {//原因就是這個地方出錯了：我在這個地方加了個if (cursor != null && cursor.moveToFirst()) {
while (cursor.moveToNext()) {
Phone phone=new Phone();
phone.setPhoneId(cursor.getInt(cursor.getColumnIndex(PhoneSQLConstant.PHONE_ID)));
phone.setPhoneNum(cursor.getString(cursor.getColumnIndex(PhoneSQLConstant.PHONE_NUM)));
phone.setPhoneDate(cursor.getString(cursor.getColumnIndex(PhoneSQLConstant.PHONE_DATE)));
list.add(phone);
}
}
this.closeCursorDB(cursor);
return list;
* * Title: selectAllPhone *Description:查詢所有的Phone物件 * @return * @see
* com.sms.ntlm.dao.PhoneDao#selectAllPhone()
*/
@SuppressLint("SimpleDateFormat")
@SuppressWarnings("deprecation")
@Override
public List<Phone> selectAllPhone() {
Cursor cursor=null;
List<Phone> list=new ArrayList<Phone>();
String sql="select * from "+PhoneSQLConstant.TABLE_NAME+";";
db=mOpenHelper.getWritableDatabase();
if(mOpenHelper!=null && db.isOpen()){
// cursor=db.query(PhoneSQLConstant.TABLE_NAME, null, null, null, null, null, null);
cursor=db.rawQuery(sql, null);
}
if (cursor != null) {//原因就是這個地方出錯了：我在這個地方加了個if (cursor != null && cursor.moveToFirst()) {
while (cursor.moveToNext()) {
Phone phone=new Phone();
phone.setPhoneId(cursor.getInt(cursor.getColumnIndex(PhoneSQLConstant.PHONE_ID)));
phone.setPhoneNum(cursor.getString(cursor.getColumnIndex(PhoneSQLConstant.PHONE_NUM)));
phone.setPhoneDate(cursor.getString(cursor.getColumnIndex(PhoneSQLConstant.PHONE_DATE)));
list.add(phone);
}
}
this.closeCursorDB(cursor);
return list;