Question

我目前正在使用Android工作室并尝试在本地DataBase中插入日期（使用DatePickerFragment）但我仍然收到该列不存在的错误。我有点像菜鸟，所以请温柔:)

android.database.sqlite.SQLiteException: no such column: date (code 1): , while compiling: SELECT nome, descricao, date FROM exames

我有DatePickerFragment类：

public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

private Calendar dateTime=Calendar.getInstance();

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the current date as the default date in the picker
    final Calendar c = Calendar.getInstance();
    int year = c.get(Calendar.YEAR);
    int month = c.get(Calendar.MONTH);
    int day = c.get(Calendar.DAY_OF_MONTH);

    // Create a new instance of DatePickerDialog and return it
    return new DatePickerDialog(getActivity(), this, year, month, day);
}

public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
    // Do something with the date chosen by the user
    TextView et1= (TextView) getActivity().findViewById(R.id.theDateET);
    et1.setText("Year: " + view.getYear() + " Month: " + view.getMonth() + " Day: " + view.getDayOfMonth());




    dateTime.set(year,monthOfYear,dayOfMonth);

    int mYear = year;   // Here you can get day,month and year.
    int mMonth = monthOfYear +1;
    int mDay = dayOfMonth;

    ContentValues values = new ContentValues();

    values.put("date",mDay + mMonth + mYear);
   /* values.put("Month",mMonth);
    values.put("Year", mYear);*/

     }
}

在我的InsertActivity中，我称之为：

 public void showDatePickerDialog(View v) {
    DialogFragment newFragment = new DatePickerFragment();
    newFragment.show(getSupportFragmentManager(), "datePicker");
}

同样在我的DataBaseAdapter类中，我将此功能插入到DB

中

 public long insertExame(String oNome, String aDescricao, String date) {
    ContentValues values = new ContentValues();
    values.put("nome", oNome);
    values.put("descricao", aDescricao);
    values.put("date", date);
   /* values.put("month", month);
    values.put("day", day);*/

    return database.insert("exames", null, values);
}

编辑：这是我创建数据库的地方：

public class HelpDataBase01 extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "base-dados.db";
private static final int VERSION = 1;
public HelpDataBase01(Context context){
    super(context, DATABASE_NAME, null, VERSION);
}
@Override
public void onCreate(SQLiteDatabase db){
    db.execSQL("CREATE TABLE exames(_id integer primary key autoincrement, nome varchar(40), descricao varchar(40), date varchar(100))");

}
@Override
public void onUpgrade (SQLiteDatabase db, int oldVersion, int newVersion){
    db.execSQL("DROP TABLE IF EXISTS Exames");
    onCreate(db);

}

}

感谢您的帮助！

Answer 1

错误表示该字段＆＃34; date＆＃34;表格＆＃34;考试＆＃34;中不存在，但我看到你在sql语句中创建它。可能是因为你改变了＆＃34; CREATE＆＃34;声明，但在使用旧方案创建表之后从未执行过。将VERSION整数增加到2，然后运行应用程序。它将使用适当的结构重新创建表格。

Android将日期插入到数据库datePicker错误

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