Question

I need to pass a parameter from an EditText and when I click the button, it’ll start another activity and get that parameter and pass it to a query. It follows:

final Button ara = (Button) findViewById(R.id.maddebutton);
    ara.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            String maddeno = madde.getText().toString(); //madde is my EditText
            Intent intent = new Intent(Anayasa.this, MaddeBul.class);
            intent.putExtra("maddeler", maddeno);
            startActivity(intent);
            }
    });

my second class is as follows:

Intent intent = getIntent();
    int maddebul = intent.getIntExtra("maddeler", 0); //I don't want to set a default value but it pushes me

try {
        Cursor cursor = FetchRecord(db.query("anayasa", SELECT,
                "no = maddebul", null, null, null, null));
        ShowRecord(cursor);
    } finally {
        database.close();
    }

my FetchRecord(Cursor c) and ShowRecord(Cursor cursor) functions work fine, since I’m using them in other classes. There is “no” column in my “anayasa” database which holds integer values.

On LogCat, it says “no column such maddebul”. It is true, there isn’t. It suppose to be:

SELECT * FROM anayasa WHERE no = maddebul; //as sql command

Any help?

Answer 1

There are multiple problems:

You put maddebul as String here so need to get it like this:

String maddebul = intent.getStringExtra("maddeler", "");

Also you are forming your SQL query wrong, maddebul is passed as a String to the db, whereas you actually want to pass the value of that variable. So it could be like this instead:

Cursor cursor = FetchRecord(db.query("anayasa", SELECT,
                "no = ?",new String[]{maddebul}, null, null, null));