CODEWITHSUNDEEP
androidlistviewandroid-listviewandroid-alertdialog
Kitinz
Kitinz

Reputation: 1542

Change dynamically items in a listView

I'm using a custom ListView with a Title and a Subtitle where you can read a brief explanation of the item.

For each item on the list, I'm displaying an AlertDialog to select an option (different for each case). When the option is selected, i want to change the Subtitle for the option selected by the user.

This is what I've tried:

listview.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        switch(position){
        case 0: 
        final CharSequence[] alertText1 = {"Area 1", "Area 2", "Area 3"};
        ventana.setTitle("Choose an Area");
        ventana.setItems(alertText1, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int item) {
                  TextView subTitulo = (TextView) findViewById(R.id.subTitulo);
                  subTitulo.setText(alertText1[item]);
            }
        });
        ventana.show();
        break;

    case 1: 
        final CharSequence[] alertText2 = {"1", "2", "3", "5", "10", "20", "60"};
        ventana.setTitle("Max. duration");
        ventana.setItems(alertText2, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int item) {
                TextView subTitulo = (TextView) findViewById(R.id.subTitulo);
                subTitulo.setText(alertText2[item]);
            }
        });
        ventana.show();
        break;

    case 2: 
        final CharSequence[] alertText3 = {"3", "5", "10", "20", "30", "60"};
        ventana.setTitle("Time between events");
        ventana.setItems(alertText3, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int item) {
                TextView subTitulo = (TextView) findViewById(R.id.subTitulo);
                subTitulo.setText(alertText3[item]);
            }
        });
        ventana.show();
        break;

For the first item on the list it works fine, when I select an option, the subtitle get replaced by that option, but when I make a selection in the AlertDialogs of the other 2 items, the option selected replaces the subtitle of the first item!

Any idea of how can I fix that?

Upvotes: 1

Views: 3019

Answers (1)

Kitinz
Kitinz

Reputation: 1542

Since nobody answered the question and i find a solution, im going to publish it here to help other people who eventually can be facing the same problem or a similar one :D

I just remove the TextView subTitulo = (TextView) findViewById(R.id.subTitulo); from each case and added it before the switch starts but "taking" the view argument on the onClick function (the type final, is because Eclipse warned me about it :P) : final TextView subTitulo = (TextView) view.findViewById(R.id.subTitulo);

The code looks like this:

 listview.setOnItemClickListener(new OnItemClickListener() {
          public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

TextView subTitulo = (TextView) view.findViewById(R.id.subTitulo);

              switch(position){

              case 0:   final CharSequence[] alertText1 = {"Area 1", "Area 2", "Area 3"};
                        ventana.setTitle("Choose an Area");
                        ventana.setItems(alertText1, new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int item) {

                                subTitulo.setText(alertText1[item]);
                            }
                        });
                        ventana.show();
                            break;


[...]

Upvotes: 4

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