Question

Let’s say I have a listView with some formulas like this:

((A * 2 + B * 3 + PF * 5) / 10)

When I click on it I would like to change the letters to EditTexts, so I split this String then, if it is a letter I should replace it by an EditText, so, what should I use to make this happen? I mean, can I have an activity loaded on a “Dialog Style” window? Or I can make this work with Simple Dialog?

I’ve tried this, but it gets error when adding the view(NullPointerException)

lsView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {

@Override
public boolean onItemLongClick(AdapterView<?> aView, View view,
            int i, long l) {
    Dialog dialogFormula = new Dialog(NotasActivity.this); //"Parent" activity

    dialogFormula.setTitle("Title");

    LinearLayout layout = (LinearLayout)findViewById(R.id.DialogLayout);
    String[] lines = materias.get(i).getFormula().split(" ");
    for (String s : lines) {
        if (s.compareTo("PARTIC") == 0) {
            EditText edtPartic = new EditText(dialogFormula.getContext));
            layout.addView(edtPartic);
        } else if (s.contains("A") && s.compareTo("A") != 0) {
        } else if (s.compareTo("B") == 0) {
        } else if (s.compareTo("C") == 0) {
        } else if (s.compareTo("D") == 0) {
        } else if (s.compareTo("E") == 0) {
        } else if (s.compareTo("F") == 0) {
        } else if (s.compareTo("G") == 0) {
        } else if (s.compareTo("H") == 0) {
        } else if (s.compareTo("I") == 0) {
        } else if (s.compareTo("PF") == 0) {
    } 
                }
    dialogFormula.setContentView(layout);
    return false;
}
});

dialog_formula.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" 
android:id="@+id/DialogLayout">



<TextView
    android:id="@+id/txtMateriaDialog"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView" />


<TextView
    android:id="@+id/txtFormulaDialog"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView" />

</LinearLayout>

Answer 1

I suggest you make a custom dialog class.

public class FormulaDialog extends Dialog {

    public FormulaDialog(Context c) {
        super(c);
        setTitle("Title");
        setContentView(R.layout.dialog_formula);
    }

    public void updateLayout(String[] lines) {
        LinearLayout layout = (LinearLayout)findViewById(R.id.DialogLayout);
        for (String s : lines) {
            if (s.compareTo("PARTIC") == 0) {
                EditText edtPartic = new EditText(dialogFormula.getContext));
                layout.addView(edtPartic);
            } else if (s.contains("A") && s.compareTo("A") != 0) {
            } else if (s.compareTo("B") == 0) {
            } else if (s.compareTo("C") == 0) {
            } else if (s.compareTo("D") == 0) {
            } else if (s.compareTo("E") == 0) {
            } else if (s.compareTo("F") == 0) {
            } else if (s.compareTo("G") == 0) {
            } else if (s.compareTo("H") == 0) {
            } else if (s.compareTo("I") == 0) {
            } else if (s.compareTo("PF") == 0) {
            }
        }
    }
}

Then in your Activity all you have to run is

String[] lines = materias.get(i).getFormula().split(" ");
FormulaDialog mFormulaDialog = new FormulaDialog(this);
mFormulaDialog.updateLayout(lines);
mFormulaDialog.show();