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Ich bin nicht ganz sicher, was passieren könnte, ich weiß, dass es eine Diskrepanz gibt, wenn ich versuche einzufügen, aber wenn ich meinen Code überprüfen, kann ich nicht sehen warum es würde diesen Fehler ausspucken. Ich versuche einfach, einen Benutzernamen und ein Passwort einzugeben (beides sind Strings).Datentyp beim Einfügen von Daten in Android-App-Datenbank
RAHMEN:
In meinem RegisterLoginActivity.java ich es gemacht, wenn der Benutzer das Textview-Taps „Account erstellen“ wird es den Benutzernamen und das Passwort packen und sie in Strings verwandeln.
Dann in meinem DatabaseOperations.java Ich benutze die Funktion putInformation(), um die Daten einzufügen.
Meine TableData.java enthält einfach meine Tabelleninformationen.
RegisterLoginActivity.java;
package com.example.envy.energyvue;
import android.content.Context;
import android.database.Cursor;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class RegisterLoginActivity extends AppCompatActivity {
EditText USER_NAME, USER_PASS;
TextView REG;
String user_name, user_pass;
Context ctx = this;
Button login;
@Override
protected void onCreate(Bundle savedInstanceState) {
//getActionBar().hide();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register_login);
USER_NAME = (EditText) findViewById(R.id.userText);
USER_PASS = (EditText) findViewById(R.id.passText);
REG = (TextView) findViewById(R.id.createAccount);
REG.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
user_name = USER_NAME.getText().toString();
user_pass = USER_PASS.getText().toString();
DatabaseOperations DB = new DatabaseOperations(ctx);
DB.putInformation(DB,user_name, user_pass);
}
});
// IGNORE THIS PORTION, IT IS FOR LOGGING IN AFTER I REGISTER
//********************************************
login = (Button) findViewById(R.id.login);
login.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
user_name = USER_NAME.getText().toString();
user_pass = USER_NAME.getText().toString();
DatabaseOperations DB = new DatabaseOperations(ctx);
Cursor CR = DB.getInformation(DB);
CR.moveToFirst();
boolean loginstatus = false;
String NAME = "";
do{
if(user_name.equals(CR.getString(0)) && user_pass.equals(CR.getString(1))){
loginstatus = true;
}
}while(CR.moveToFirst());
if(loginstatus){
Toast.makeText(getBaseContext(), "Login Success", Toast.LENGTH_LONG).show();
}
else{
Toast.makeText(getBaseContext(), "Login Failed", Toast.LENGTH_LONG).show();
}
}
});
}
}
DatabaseOperations.java;
package com.example.envy.energyvue;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
/**
* Created by Envy on 7/13/2016.
*
* private static final String SQL_CREATE_ENTRIES =
"CREATE TABLE " + TableData.TableInfo.TABLE_NAME + " (" + TableData.TableInfo._ID +
" INTEGER PRIMARY KEY," + TableData.TableInfo.COLUMN_NAME_USER_ID + TEXT_TYPE + COMMA_SEP + TableData.TableInfo.COLUMN_NAME_PASSWORD + TEXT_TYPE + ");";
*/
public class DatabaseOperations extends SQLiteOpenHelper{
public static final int DATABASE_VERSION = 1;
public static final String DATABASE_NAME = "UserData.db";
private static final String TEXT_TYPE = " TEXT";
private static final String COMMA_SEP = ",";
private static final String SQL_CREATE_ENTRIES =
"CREATE TABLE " + TableData.TableInfo.TABLE_NAME + " (" + TableData.TableInfo._ID +
" INTEGER PRIMARY KEY," + TableData.TableInfo.COLUMN_NAME_USER_ID + TEXT_TYPE + COMMA_SEP + TableData.TableInfo.COLUMN_NAME_PASSWORD + TEXT_TYPE + ");";
private static final String SQL_DELETE_ENTRIES =
"DROP TABLE IF EXISTS " + TableData.TableInfo.TABLE_NAME;
public DatabaseOperations(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
public void onCreate(SQLiteDatabase db) {
db.execSQL(SQL_CREATE_ENTRIES);
}
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// This database is only a cache for online data, so its upgrade policy is
// to simply to discard the data and start over
db.execSQL(SQL_DELETE_ENTRIES);
onCreate(db);
}
public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
onUpgrade(db, oldVersion, newVersion);
}
public void putInformation(DatabaseOperations dop, String user_id, String password){
SQLiteDatabase SQ = dop.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(TableData.TableInfo.COLUMN_NAME_USER_ID, user_id);
cv.put(TableData.TableInfo.COLUMN_NAME_PASSWORD, password);
System.out.print("LOLOLSDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD");
long newRowId;
newRowId = SQ.insert(
TableData.TableInfo.TABLE_NAME,
null,
cv);
}
public Cursor getInformation(DatabaseOperations dop){
SQLiteDatabase SQ = dop.getReadableDatabase();
String[] projection = {
TableData.TableInfo._ID,
TableData.TableInfo.COLUMN_NAME_USER_ID,
TableData.TableInfo.COLUMN_NAME_PASSWORD
};
Cursor CR = SQ.query(TableData.TableInfo.TABLE_NAME, projection, null, null, null, null, null);
return CR;
}
}
TableData.java;
package com.example.envy.energyvue;
import android.provider.BaseColumns;
/**
* Created by Envy on 7/13/2016.
*/
public class TableData {
public TableData(){}
public static abstract class TableInfo implements BaseColumns {
public static final String TABLE_NAME = "login_information";
public static final String COLUMN_NAME_USER_ID = "user_id";
public static final String COLUMN_NAME_PASSWORD = "password";
}
}
Fehler:
07-15 21:18:47.996 24361-24361/com.example.envy.energyvue E/SQLiteLog: (20) statement aborts at 5: [INSERT INTO login_information(password,user_id) VALUES (?,?)] datatype mismatch
07-15 21:18:47.996 24361-24361/com.example.envy.energyvue E/SQLiteDatabase: Error inserting password= bbb user_id=bbb
android.database.sqlite.SQLiteDatatypeMismatchException: datatype mismatch (code 20)
#################################################################
Error Code : 20 (SQLITE_MISMATCH)
Caused By : Data type mismatch.
(datatype mismatch (code 20))
#################################################################
at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method)
at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:915)
at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788)
at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86)
at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1609)
at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1479)
at com.example.envy.energyvue.DatabaseOperations.putInformation(DatabaseOperations.java:59)
at com.example.envy.energyvue.RegisterLoginActivity$1.onClick(RegisterLoginActivity.java:37)
at android.view.View.performClick(View.java:5697)
at android.widget.TextView.performClick(TextView.java:10814)
at android.view.View$PerformClick.run(View.java:22526)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7229)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)