编辑文本的变量改变了监听器

Question

I need help with this code, it's not working. I would like to change boolean value to true when the text changed. Any help will be appreciated.

public class Atiras {

    public void atirasfigyelo(final EditText valtozo,Cursor sql,String SQLoszlop,final boolean ell){

        valtozo.setText("" + sql.getInt(sql.getColumnIndex(SQLoszlop)));

        ell=false;
        valtozo.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                ell=true;
            }

            @Override
            public void afterTextChanged(Editable s) {
                valtozo.setBackgroundColor(Color.RED);
            }

        });
    }
}

Answer 1

This code won't work because in your function:
public void atirasfigyelo(final EditText valtozo,Cursor sql,String SQLoszlop,final boolean ell){

you are making ell as final boolean ell final variable.

You can create a class level variable that you can change from inside annonimus class like below:

public class Atiras {
    private boolean isTrue;
    public void atirasfigyelo(final EditText valtozo, Cursor sql, String SQLoszlop, final boolean ell) {    
        valtozo.setText("" + sql.getInt(sql.getColumnIndex(SQLoszlop)));

        isTrue= false;
        valtozo.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {    
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {    
                isTrue= true;    
            }

            @Override
            public void afterTextChanged(Editable s) {
                valtozo.setBackgroundColor(Color.RED);    
            }    
        });    
    }    
}

It will work because 6.3. Scope of a Declaration

The scope of a local variable declaration in a block (§14.4) is the rest of the block in which the declaration appears, starting with its own initializer and including any further declarators to the right in the local variable declaration statement.

Answer 2

You try to create a JavaBean or POJO instead of this argument list. Then you can change the 'ell' variable. And the Cursor object must be to close. First you do the query then convert the record to object. Then you make the object what you want.