我在使用Sqlite Db进行检索和保存数据的应用程序中进行了新的工作。我完成了整个项目。我的应用程序适用于首次登录。当我使用不同的用户ID登录时，它会抛出sqlite约束异常。我的Db字段保持不变，因为我使用userid作为唯一元素来获取用户的值。
如何克服此异常？否则我需要改变整个表结构？
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + Table_variables + "(id INTEGER PRIMARY KEY ,var1 text, var2 text, var3 text, var4 text, var5 text, var6 text, var7 text, var8 text, var9 text, var10 text, userid text )");
db.execSQL("CREATE TABLE " + Table_values + "(id INTEGER PRIMARY KEY , val1 text, val2 text, val3 text, val4 text, val5 text, val6 text, val7 text, val8 text, val9 text, val10 text ,userid text )");
db.execSQL("CREATE TABLE " + Table_ListId + "(id INTEGER PRIMARY KEY , val1 text, val2 text, val3 text, val4 text, val5 text, val6 text, val7 text, val8 text, val9 text, val10 text,userid text )");
db.execSQL("CREATE TABLE " + Table_PaymentOptions + "(id INTEGER PRIMARY KEY, var1 text, var2 text, var3 text, var4 text, var5 text, var6 text, var7 text, var8 text , userid text, randomID text)");
db.execSQL("CREATE TABLE " + Table_PaymentRemider + "(id INTEGER PRIMARY KEY, plc text, agencyname text,amountDue text, datedue text, reminderNotes text, reminderDate text, reminderTime text, toggleOption text, userid text, uniqueID text)");
}
// TODO TO INSERT REGION DATA
public boolean insertData(Context context, ArrayList list, ArrayList list1, ArrayList list2, String plcData, String agencyName, String userid) {
SQLiteDatabase myDB = getWritableDatabase("my_paygov_secure_key");
System.out.println("AGENCY_NAME_in DBHANDLER" + agencyName);
if (list.size() == 0) {
} else {
for (int i = 0; i < list.size(); i++) {
System.out.println("LIST-label and List-Edittext" + list.get(i));
}
boolean dbCheck = CheckIsDataAlreadyInDBorNot(Table_variables, "id", plcData, "userid", userid);
if (dbCheck) {
String query = "UPDATE " + Table_variables + " SET var2='" + list.get(0) + "',var3='" + list.get(1) + "',var4='" + list.get(2) + "',var5='" + list.get(3) + "',var6='" + list.get(4) + "',var7='" + list.get(5) + "',var8='" + list.get(6) + "',var9='" + list.get(7) + "',var10='" + list.get(8) + "' WHERE id =' " + plcData + " ' and userid='" + userid + "'";
String query1 = "UPDATE " + Table_values + " SET val2='" + list1.get(0) + "',val3='" + list1.get(1) + "',val4='" + list1.get(2) + "',val5='" + list1.get(3) + "',val6='" + list1.get(4) + "',val7='" + list1.get(5) + "',val8='" + list1.get(6) + "',val9='" + list1.get(7) + "',val10='" + list1.get(8) + "' WHERE id =' " + plcData + " ' and userid='" + userid + "'";
String query2 = "UPDATE " + Table_ListId + " SET val2='" + list2.get(0) + "',val3='" + list2.get(1) + "',val4='" + list2.get(2) + "',val5='" + list2.get(3) + "',val6='" + list2.get(4) + "',val7='" + list2.get(5) + "',val8='" + list2.get(6) + "',val9='" + list2.get(7) + "',val10='" + list2.get(8) + "' WHERE id =' " + plcData + " ' and userid='" + userid + "'";
myDB.execSQL(query);
myDB.execSQL(query1);
myDB.execSQL(query2);
} else {
String query = "INSERT INTO " + Table_variables + " VALUES('" + plcData + "', '" + agencyName + "','" + list.get(0) + "','" + list.get(1) + "','" + list.get(2) + "','" + list.get(3) + "','" + list.get(4) + "','" + list.get(5) + "','" + list.get(6) + "','" + list.get(7) + "','" + list.get(8) + "','" + userid + "');";
String query1 = "INSERT INTO " + Table_values + " VALUES('" + plcData + "','" + agencyName + "','" + list1.get(0) + "','" + list1.get(1) + "','" + list1.get(2) + "','" + list1.get(3) + "','" + list1.get(4) + "','" + list1.get(5) + "','" + list1.get(6) + "','" + list1.get(7) + "','" + list1.get(8) + "','" + userid + "');";
String query2 = "INSERT INTO " + Table_ListId + " VALUES('" + plcData + "','" + agencyName + "','" + list2.get(0) + "','" + list2.get(1) + "','" + list2.get(2) + "','" + list2.get(3) + "','" + list2.get(4) + "','" + list2.get(5) + "','" + list2.get(6) + "','" + list2.get(7) + "','" + list2.get(8) + "','" + userid + "');";
myDB.execSQL(query);
myDB.execSQL(query1);
myDB.execSQL(query2);
}
return true;
}
return false;
}
// TODO TO INSERT CARD DETAILS
public boolean insertCardDetails(Context context, ArrayList list, String cardNumber, String userid, String randomID) {
SQLiteDatabase myDB = getWritableDatabase("my_paygov_secure_key");
// Integer i = Integer.parseInt(cardNumber);
long card = Long.valueOf(cardNumber).longValue();
int ccnumber = (int) card;
/* for (int i = 0; i < list.size(); i++) {
System.out.println("LIST VALUE" + i + list.get(i).toString());
}*/
boolean dbCheck = CheckIsDataAlreadyInDBorNot(Table_PaymentOptions, "randomID", randomID, "userid", userid);
if (dbCheck) {
String query = "UPDATE " + Table_PaymentOptions + " SET var1='" + list.get(0) + "',var2='" + list.get(1) + "',var3='" + list.get(2) + "',var4='" + list.get(3) + "',var5='" + list.get(4) + "',var6='" + list.get(5) + "',var7='" + list.get(6) + "',var8='" + list.get(7) + "' WHERE randomID ='" + randomID + "' and userid='" + userid + "'";
} else {
String query = "INSERT INTO " + Table_PaymentOptions + " VALUES('" + ccnumber + "', '" + list.get(0) + "','" + list.get(1) + "','" + list.get(2) + "','" + list.get(3) + "','" + list.get(4) + "','" + list.get(5) + "','" + list.get(6) + "','" + list.get(7) + "','" + userid + "', '" + randomID + "');";
myDB.execSQL(query);
}
return false;
}
// TO INSERT DATA FOR REMINDER
public boolean myPaymentReminder(Context context, ArrayList list, int plcData, String userid) {
SQLiteDatabase myDB = getWritableDatabase("my_paygov_secure_key");
boolean dbCheck = CheckIsDataAlreadyInDBorNot(Table_PaymentRemider, "id", String.valueOf(plcData), "userid", userid);
if (dbCheck) {
String query = "UPDATE " + Table_PaymentRemider + " SET agencyname='" + list.get(1) + "',amountDue='" + list.get(2) + "',dateDue='" + list.get(3) + "',reminderNotes='" + list.get(4) + "',reminderDate='" + list.get(5) + "',reminderTime='" + list.get(6) + "',toggleOption='" + list.get(7) + "', uniqueID='" + list.get(8) + "' WHERE id ='" + plcData + "' and userid = '" + userid + "'";
myDB.execSQL(query);
} else {
String query = "INSERT INTO " + Table_PaymentRemider + " VALUES('" + plcData + "', '" + list.get(0) + "','" + list.get(1) + "','" + list.get(2) + "','" + list.get(3) + "','" + list.get(4) + "','" + list.get(5) + "','" + list.get(6) + "','" + list.get(7) + "','" + userid + "','" + list.get(8) + "');";
myDB.execSQL(query);
}
System.out.println("PlcData" + plcData);
return true;
}
// TODO TO CHECK TABLE IS ALREADY PRESENT OR NOT
public boolean CheckIsDataAlreadyInDBorNot(String TableName,
String dbfield, String fieldValue, String dbfield1, String field1) {
SQLiteDatabase myDB = getWritableDatabase("my_paygov_secure_key");
String Query = "Select * from " + TableName + " where " + dbfield + " = " + fieldValue + " and " + dbfield1 + " = '" + field1 + "'";
System.out.println("Check User id DB" + Query);
Cursor cursor = myDB.rawQuery(Query, null);
if (cursor.getCount() <= 0) {
cursor.close();
return false;
}
cursor.close();
return true;
}
THE EXCEPTION THAT I GET IN LOGCAT !
net.sqlcipher.database.SQLiteConstraintException: UNIQUE constraint failed: PLC_DETAILS_TABLE_VARIABLES.id: INSERT INTO PLC_DETAILS_TABLE_VARIABLES VALUES('36400', 'Indiana-Dearborn County-Environmental Health','Name','Dearborn Enviro','','','','','','','','1e2332d3-cc60-48eb-bca0-8499097411bc');
答案 0 :(得分：0)
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + Table_variables + "(id INTEGER PRIMARY KEY ,var1 text, var2 text, var3 text, var4 text, var5 text, var6 text, var7 text, var8 text, var9 text, var10 text, userid text )");
db.execSQL("CREATE TABLE " + Table_values + "(id INTEGER PRIMARY KEY , val1 text, val2 text, val3 text, val4 text, val5 text, val6 text, val7 text, val8 text, val9 text, val10 text ,userid text )");
db.execSQL("CREATE TABLE " + Table_ListId + "(id INTEGER PRIMARY KEY , val1 text, val2 text, val3 text, val4 text, val5 text, val6 text, val7 text, val8 text, val9 text, val10 text,userid text )");
db.execSQL("CREATE TABLE " + Table_PaymentOptions + "(id INTEGER PRIMARY KEY, var1 text, var2 text, var3 text, var4 text, var5 text, var6 text, var7 text, var8 text , userid text, randomID text)");
db.execSQL("CREATE TABLE " + Table_PaymentRemider + "(id INTEGER PRIMARY KEY, plc text, agencyname text,amountDue text, datedue text, reminderNotes text, reminderDate text, reminderTime text, toggleOption text, userid text, uniqueID text)");
}
您有id作为主键。在表中插入重复值时，会出现唯一约束错误。实施一种检查重复ID的方法或使用execSQL("INSERT ...")块环绕try-catch，这两种方法都应该可行。第二种方式：
String query = "INSERT INTO " + Table_variables + " VALUES('" + plcData + "', '" + agencyName + "','" + list.get(0) + "','" + list.get(1) + "','" + list.get(2) + "','" + list.get(3) + "','" + list.get(4) + "','" + list.get(5) + "','" + list.get(6) + "','" + list.get(7) + "','" + list.get(8) + "','" + userid + "');";
String query1 = "INSERT INTO " + Table_values + " VALUES('" + plcData + "','" + agencyName + "','" + list1.get(0) + "','" + list1.get(1) + "','" + list1.get(2) + "','" + list1.get(3) + "','" + list1.get(4) + "','" + list1.get(5) + "','" + list1.get(6) + "','" + list1.get(7) + "','" + list1.get(8) + "','" + userid + "');";
String query2 = "INSERT INTO " + Table_ListId + " VALUES('" + plcData + "','" + agencyName + "','" + list2.get(0) + "','" + list2.get(1) + "','" + list2.get(2) + "','" + list2.get(3) + "','" + list2.get(4) + "','" + list2.get(5) + "','" + list2.get(6) + "','" + list2.get(7) + "','" + list2.get(8) + "','" + userid + "');";
try {
myDB.execSQL(query);
myDB.execSQL(query1);
myDB.execSQL(query2);
} catch(SQLException se) {
//do stuff when you catch a duplicate ID
}