我有一个包含方法addPub和GetAllPubs的数据库：
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Presence(List<Personne> selectedObjects)
{
return View(selectedObjects);
}
}
和Class Pub：
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import java.util.ArrayList;
import java.util.List;
public class Database extends SQLiteOpenHelper{
public static final int DATABASE_VERSION = 1;
public static final String DATABASE_NAME = "Pubs.db";
public static final String DATABASE_TABLE = "pubsTable";
public static final String COL_1 = "ID";
public static final String COL_2 = "NAME";
public static final String COL_3 = "LAT";
public static final String COL_4 = "LNG";
public static final String COL_5 = "OPEN";
public static final String COL_6 = "CLOSE";
public static final String COL_7 = "PUB";
public static final String COL_8 = "COCKTAIL";
public static final String COL_9 = "BEER";
public static final String COL_10 = "FOOD";
public static final String COL_11 = "DART";
public static final String COL_12 = "POOL";
public static final String COL_13 = "MUSIC";
public static final String COL_14 = "SPORT";
public static final String COL_15 = "OUTSIDE";
public static final String COL_16 = "PAY";
public static final String COL_17 = "QUIZ";
public static final String COL_18 = "PHONE";
public Database(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_CONTACTS_TABLE = "CREATE TABLE" + " " +DATABASE_TABLE + "("
+ COL_1 +" " +"INTEGER PRIMARY KEY AUTOINCREMENT,"
+ COL_2 +" " + "TEXT,"
+ COL_3 +" " + "TEXT,"
+ COL_4 +" " + "TEXT,"
+ COL_5 +" " + "TEXT,"
+ COL_6 +" " + "TEXT,"
+ COL_7 +" " + "TEXT,"
+ COL_8 +" " + "TEXT,"
+ COL_9 +" " + "TEXT,"
+ COL_10 +" " + "TEXT,"
+ COL_11 +" " + "TEXT,"
+ COL_12 +" " + "TEXT,"
+ COL_13 +" " + "TEXT,"
+ COL_14 +" " + "TEXT,"
+ COL_15 +" " + "TEXT,"
+ COL_16 +" " + "TEXT,"
+ COL_17 +" " + "TEXT,"
+ COL_18 +" " + "TEXT"
+ ")";
db.execSQL(CREATE_CONTACTS_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
onCreate(db);
}
void addPub(Pub pub) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(COL_1, pub.getID());
values.put(COL_2, pub.getName());
values.put(COL_3, pub.getLat());
values.put(COL_4, pub.getLng());
values.put(COL_5, pub.getOpen());
values.put(COL_6, pub.getClose());
values.put(COL_7, pub.getPub());
values.put(COL_8, pub.getCocktail());
values.put(COL_9, pub.getBeer());
values.put(COL_10, pub.getFood());
values.put(COL_11, pub.getDart());
values.put(COL_12, pub.getPool());
values.put(COL_13, pub.getMusic());
values.put(COL_14,pub.getSport());
values.put(COL_15, pub.getOutside());
values.put(COL_16, pub.getPay());
values.put(COL_17, pub.getQuiz());
values.put(COL_18, pub.getPhone_number());
db.insert(DATABASE_TABLE, null, values);
db.close();
}
public List<Pub> getAllPubs() {
List<Pub> pubList = new ArrayList<>();
String selectQuery = "SELECT * FROM " + DATABASE_TABLE;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
if (cursor.moveToFirst()) {
do {
Pub pub = new Pub();
pub.setID(Integer.parseInt(cursor.getString(0)));
pub.setName(cursor.getString(1));
pub.setLat(cursor.getString(2));
pub.setLng(cursor.getString(3));
pub.setOpen(cursor.getString(4));
pub.setClose(cursor.getString(5));
pub.setPub(cursor.getString(6));
pub.setCocktail(cursor.getString(7));
pub.setBeer(cursor.getString(8));
pub.setFood(cursor.getString(9));
pub.setDart(cursor.getString(10));
pub.setPool(cursor.getString(11));
pub.setMusic(cursor.getString(12));
pub.setSport(cursor.getString(13));
pub.setOutside(cursor.getString(14));
pub.setPay(cursor.getString(15));
pub.setQuiz(cursor.getString(16));
pub.setPhone_number(cursor.getString(17));
pubList.add(pub);
} while (cursor.moveToNext());
}
return pubList;
}
}
然而，当我尝试运行添加功能时，如：
public class Pub {
int _id;
String _name;
String _lat;
String _lng;
String _open;
String _close;
String _pub;
String _cocktail;
String _beer;
String _food;
String _dart;
String _pool;
String _music;
String _sport;
String _outside;
String _pay;
String _quiz;
String _phone_number;
public Pub() {
}
public Pub(int id, String name, String lat, String lng, String open, String close, String pub, String cocktail, String beer, String food, String dart, String pool, String music,String sport, String outside, String pay, String quiz, String phone_number){
this._id = id;
this._name = name;
this._lat = lat;
this._lng = lng;
this._open= open;
this._close=close;
this._pub=pub;
this._cocktail=cocktail;
this._beer=beer;
this._food=food;
this._dart=dart;
this._pool=pool;
this._music=music;
this._sport=sport;
this._outside=outside;
this._pay=pay;
this._quiz=quiz;
this._phone_number=phone_number;
}
public int getID(){
return this._id;
}
public String getName(){
return this._name;
}
public String getLat(){
return this._lat;
}
public String getLng(){
return this._lng;
}
public String getOpen(){
return this._open;
}
public String getClose(){
return this._close;
}
public String getPub(){
return this._pub;
}
public String getCocktail(){
return this._cocktail;
}
public String getBeer(){
return this._beer;
}
public String getFood(){
return this._food;
}
public String getDart(){
return this._dart;
}
public String getPool(){
return this._pool;
}
public String getMusic(){
return this._music;
}
public String getSport(){
return this._sport;
}
public String getOutside(){
return this._outside;
}
public String getPay(){
return this._pay;
}
public String getQuiz(){
return this._quiz;
}
public String getPhone_number(){
return this._phone_number;
}
public void setID(int id){
this._id = id;
}
public void setName(String name){
this._name = name;
}
public void setLat(String lat){
this._lat = lat;
}
public void setLng(String lng){
this._lng = lng;
}
public void setOpen(String open){
this._open = open;
}
public void setClose(String close){
this._close = close;
}
public void setPub(String pub){
this._pub = pub;
}
public void setCocktail(String cocktail){
this._cocktail = cocktail;
}
public void setBeer(String beer){
this._beer = beer;
}
public void setFood(String food){
this._food = food;
}
public void setDart(String dart){
this._dart = dart;
}
public void setPool(String pool){
this._pool = pool;
}
public void setMusic(String music){this._music = music; }
public void setSport(String sport){
this._sport = sport;
}
public void setOutside(String outside){
this._outside = outside;
}
public void setPay(String pay){
this._pay = pay;
}
public void setQuiz(String quiz){
this._quiz = quiz;
}
public void setPhone_number(String phone_number){
this._phone_number = phone_number;
}
我收到此错误：
Database db = new Database(this);
db.addPub( new Pub(1,"The Old Queen's Head","53.3809646","-1.4631316","10:00","23:00","p","0","1","1","0","0","1","0","1","0","0","07983559073"));
我无法弄清楚原因是什么以及如何编辑我的代码。
答案 0 :(得分：2)
我认为您已将pubsTable.ID定义为主键，并且它已包含1，因此您必须在添加新Pub时输入唯一ID。
答案 1 :(得分：1)
无需在values.put(COL_1, pub.getID());方法中添加addPub(Pub pub)，因为您已为INTEGER PRIMARY KEY AUTOINCREMENT添加COL_1，因此COL_1的ID将自动生成并自动递增。< / p>
在运行你的函数时你只需要添加其他参数，不需要添加COL_1参数，所以让你的函数调用为 -
`
db.addPub( newPub("TheOldQueen'sHead","53.3809646","1.4631316","10:00","23:00","p","0","1","1","0","0","1","0","1","0","0","07983559073"));`
从values.put(COL_1, pub.getID());中删除addPub(Pub pub)语句
我希望它有助于!!
只需确保在进行所需更改后清除手机设置中的应用数据。