我試圖創建SQLiteDatabase,該功能保持用戶登錄時表不爲空,如果它爲空活動將請求用戶和密碼,並且該表有兩行先是名字和第二個是位置。但我不知道爲什麼給我這個錯誤:E/SQLiteDatabase:插入錯誤
02-27 09:53:22.142 11519-11519/com.amaiub.hussain.smartmenu E/SQLiteLog: (1) no such table: User_Table
02-27 09:53:22.149 11519-11519/com.amaiub.hussain.smartmenu E/SQLiteDatabase: Error inserting user_position=admin user_name=hussain
android.database.sqlite.SQLiteException: no such table: User_Table (code 1): , while compiling: INSERT INTO User_Table(user_position,user_name) VALUES (?,?)
我在數據庫中創建
public class DatabaseHelper extends SQLiteOpenHelper {
private final static String DB_NAME = "e-Order";
private final static int DB_VERSION = 1;
private final String USER_TABLE = "User_Table";
private String USER="user_name",POSITION="user_position";
public DatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE '" + USER_TABLE + "'('" + USER + "'TEXT,'" + POSITION + "'TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS '" + USER_TABLE + "'");
onCreate(db);
}
public int logIn(String userName, String userPosition) {
int result = 0;
SQLiteDatabase db = getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(USER, userName);
cv.put(POSITION, userPosition);
result = (int) db.insert(USER_TABLE, null, cv);
if (db != null)
db.close();
return result;
}
public int getUser() {
int total = 0;
SQLiteDatabase db = getReadableDatabase();
Cursor cur = db.query(USER_TABLE, null, null, null, null, null, null);
if (cur.getCount() > 0)
total = cur.getCount();
if (cur != null)
cur.close();
if (db != null)
db.close();
return total;
}
public int logOut() {
int result = 0;
SQLiteDatabase db = getWritableDatabase();
result = db.delete(USER_TABLE, null, null);
if (db != null)
db.close();
return result;
}
此表,並在此登錄活動
@Override
public void onResponse(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
if (jsonObject.names().get(0).equals("user")||jsonObject.names().get(0).equals("position")) {
Toast.makeText(getApplicationContext(), "Welcome "+jsonObject.getString("position"), Toast.LENGTH_SHORT).show();
user_name=jsonObject.getString("user");
user_position=jsonObject.getString("position");
if (user_name!=null||user_position!=null) {
helper.logIn(user_name, user_position);
finish();
Intent intent = new Intent(getApplicationContext(), MainPage.class);
intent.putExtra("user", user_name);
intent.putExtra("position", user_position);
startActivity(intent);
}
} else {
sign_in.setError("");
Toast.makeText(getApplicationContext(), "Error" + jsonObject.getString("error"), Toast.LENGTH_SHORT).show();
creatingAnime();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
我不知道有什麼問題
感謝親愛的,但問題不是在代碼中,我不知道爲什麼,但是當我做卸載它再工作了,謝謝。 –