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我有一個.sqllite數據庫文件和我嘗試打開該數據庫並插入一些values.but當我運行應用程序，我必須登錄貓error.can't打開數據庫 這是我的代碼機器人無法從資產文件夾中打開SQLite數據庫
public class IrocDBController extends SQLiteOpenHelper {
String DB_PATH = null;
private static String DB_NAME = "CredoDatabase.sqlite";
private static String usm_Users = "Usm_Users";
private SQLiteDatabase myDataBase;
private final Context myContext;
public IrocDBController(Context context) {
super(context, DB_NAME, null, 2);
this.myContext = context;
DB_PATH = "/data/data/" + context.getPackageName() + "/" + "databases/";
}
public void InsertToLoginTable(String username, String password,
String LoanOfficerId, String BranchId) {
ContentValues newValues = new ContentValues();
newValues.put("UserName", username);
newValues.put("Password", password);
newValues.put("LoanOfficerId", LoanOfficerId);
newValues.put("BranchId", BranchId);
myDataBase.insert(usm_Users, null, newValues);
}
public boolean DublicateValues(int LoanOfficerId) {
myDataBase = this.getWritableDatabase();
Cursor cursor = myDataBase.rawQuery("select * from " + usm_Users + " where "
+ "LoanOfficerId" + " == " + LoanOfficerId, null);
boolean exists = (cursor.getCount() > 0);
Log.e("aaaaaaaaaaaaaaaaaaaa", String.valueOf(cursor.getCount()));
cursor.close();
return exists;
}
public void createDataBase() throws IOException {
boolean dbExist = checkDataBase();
if (dbExist) {
// do nothing - database already exist
} else {
this.getReadableDatabase();
try {
copyDataBase();
} catch (IOException e) {
throw new Error("Error copying database");
}
}
}
public String getNameFildeEntry(String username) {
Cursor cursor = myDataBase.query(usm_Users, null, " UserName=?",
new String[] { username }, null, null, null);
if (cursor.getCount() < 1) // UserName Not Exist
{
cursor.close();
return "NOT EXIST";
}
cursor.moveToFirst();
String getUserName = cursor
.getString(cursor.getColumnIndex("UserName"));
cursor.close();
return getUserName;
}
public String getPasswordFildeEntry(String Password) {
Cursor cursor = myDataBase.query(usm_Users, null, " Password=?",
new String[] { Password }, null, null, null);
if (cursor.getCount() < 1) // UserName Not Exist
{
cursor.close();
return "NOT EXIST";
}
cursor.moveToFirst();
String getUserPassword = cursor.getString(cursor
.getColumnIndex("Password"));
cursor.close();
return getUserPassword;
}
private boolean checkDataBase() {
SQLiteDatabase checkDB = null;
try {
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.OPEN_READWRITE);
} catch (SQLiteException e) {
}
if (checkDB != null) {
checkDB.close();
}
return checkDB != null ? true : false;
}
private void copyDataBase() throws IOException {
InputStream myInput = myContext.getAssets().open(DB_NAME);
String outFileName = DB_PATH + DB_NAME;
OutputStream myOutput = new FileOutputStream(outFileName);
byte[] buffer = new byte[1024];
int length;
while ((length = myInput.read(buffer)) > 0) {
myOutput.write(buffer, 0, length);
}
myOutput.flush();
myOutput.close();
myInput.close();
}
public void openDataBase() throws SQLException {
String path = DB_PATH + DB_NAME;
myDataBase = SQLiteDatabase.openDatabase(path, null,
SQLiteDatabase.OPEN_READWRITE);
}
@Override
public synchronized void close() {
if (myDataBase != null)
myDataBase.close();
super.close();
}
@Override
public void onCreate(SQLiteDatabase db) {
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}
我使用nativec TU創建SQLite數據庫和我的數據庫中，我創建了一些表，等這個數據庫I插入資產的文件夾 我不知道我在做什麼錯誤。 如果有人知道的解決方案，請幫我 這是我的日誌貓錯誤代碼 