E/AndroidRuntime: FATAL EXCEPTION: main Process: home.partyfinder3, PID: 8459 java.lang.IllegalArgumentException: Cannot bind argument at index 2 because the index is out of range. The statement has 0 parameters. at android.database.sqlite.SQLiteProgram.bind(SQLiteProgram.java:212) at android.database.sqlite.SQLiteProgram.bindString(SQLiteProgram.java:166) at android.database.sqlite.SQLiteProgram.bindAllArgsAsStrings(SQLiteProgram.java:200) at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:47) at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1316) at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1255) at home.partyfinder3.LoginActivity.onClick(LoginActivity.java:51) at android.view.View.performClick(View.java:4780) at android.view.View$PerformClick.run(View.java:19866) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) Here such exception takes off when I press the Enter button. Handler:
public void onClick(View v) { String username = etUsername.getText().toString(); String password = etPassword.getText().toString(); db = dbHelper.getWritableDatabase(); switch (v.getId()) { case R.id.btnLogin: Cursor c = db.rawQuery("SELECT username FROM users WHERE username='?' AND password='?'", new String[] {username, password}); if(c.moveToFirst()) { Toast.makeText(this, R.string.login_enjoy, Toast.LENGTH_LONG).show(); startActivity(new Intent(this, MainActivity.class).putExtra("username", username)); c.close(); } else { Toast.makeText(this, R.string.login_error, Toast.LENGTH_LONG).show(); } break; case R.id.btnLinkToRegisterScreen: startActivity(new Intent(this, RegisterActivity.class)); break; } dbHelper.close(); } Where is something wrong?