Check if record exist in the database android

Question

I want to check if records exist in the SQLite database, here\'s what I have done so far. when I search for a already existing records im getting value from EditText in list.

Answer 1

I use this code in my application and it works perfact...

LoginActivity.java

DatabaseHelper dbHelper = new DatabaseHelper(getApplicationContext());
String email_id = email.getText().toString();
boolean dbHelper.isExist(email_id);

// if record is exist then it will return true otherwise this method returns false

Using rawQuery

 public boolean isExist(String strEmailAdd) {
        db = this.getReadableDatabase();
        cur = db.rawQuery("SELECT * FROM " + USER_TABLE + " WHERE email_id = '" + strEmailAdd + "'", null);
        boolean exist = (cur.getCount() > 0);
        cur.close();
        db.close();
        return exist;

    }

Using db.query

public boolean isExist(String strEmailAdd){

        String whereClause = "email_id = ?";
        String[] whereArgs = new String[]{strEmailAdd};

        db = database.getWritableDatabase();
        cur = db.query(USER_TABLE, null, whereClause, whereArgs, null, null, null);
        boolean exist = (cur.getCount() > 0);
        cur.close();
        db.close();
        return exist;
}