onItemClick get ID or Name of item on array

Question

I have this array:

<string-array name="menu_array">
    <item name="home" >Home</item>
    <item name="new" >New</item>
    <item name="history" >History</item>
    <item id="categories" >Categories</item>
    <item id="store" >Store</item>
    <item id="configs" >Configurations</item>

And I have this:

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        mDrawerLayout.closeDrawer(mDrawerList);

        Toast.makeText(SlideMenuActivity.this, "selecionado: " +  
        switch (position) {
            case 0:
                break;...

What I want: I want to be able to use the id or name of the clicked item instead of the position. But why? because everytime I change the order of the itens on the array, I also have to change the switch-case. I can't use the value of the item (Home, New,...), because it also change according to language.

<string-array name="menu_array">
    <item name="home" >Home</item>
    <item name="new" >Novo</item>
    <item name="history" >Historico</item>
    <item id="categories" >Categorias</item>
    <item id="store" >Loja</item>
    <item id="configs" >Configuracoes</item>

Any help?

So the order of the menu options changes? I don't think that's very user friendly. Or am I misunderstanding? — DigitalNinja, Jul 22 '15 at 18:44
On the final version, no. but it's giving me over work every time I want to add a new item in the middle and have to number all over again. — Priscilla Vasconcelos, Jul 22 '15 at 18:50

score 2 · Accepted Answer · answered Jul 22 '15 at 19:02

one solution could make use of a JSONObject. E.g.

  <string-array name="menu_array">
    <item name="home">{"id": 1, "name": "Home"}</item>
    <item name="new" >{"id": 2, "name": "New"}</item>
    <item name="history" >{"id": 3, "name": "History"}</item>
   ....
  </string-array>

Then you have to retrieve it, parse the JSON, and use a small object to wrap the information:

 public static class Info {
   public  int id;
   public String name;

   @Override
   public String toString() {
      return name;
   }
 }

String[] array = getResources().getStringArray(R.array.menu_array);
ArrayList<Info> dataset = new ArrayList<>();
for (String s : array) {
    JSONObject jObj = new JSONObject(s);
    Info info = new Info();
    info.id = jObj.optInt("id");
    info.name =  jObj.optInt("name");
    dataset.add(info);
}

Then you will have to change your adapter to deal with instance of Info. When you press on an item, in your onItemClick, you can easily retrieve the item at position with

Info info = (Info) parent.getItemAtPosition(position);

and then you can switch on info.id

I'm getting a "String cannot be cast" on Info info = (Info) parent.getItemAtPosition(position); How i handle it? — Priscilla Vasconcelos, Jul 22 '15 at 20:16
You mean by extends? If so, yes. Firstly I could`t create the Info class as static, but i don`t think that`s the issue. — Priscilla Vasconcelos, Jul 22 '15 at 21:25
I got it to work using `Info info = dataset.get(position);` instead of `Info info = (Info) parent.getItemAtPosition(position);`. And it worked! Thank you very much! — Priscilla Vasconcelos, Jul 22 '15 at 23:13

score 1 · Answer 2 · answered Jul 22 '15 at 18:50

1

if you are extending Adapter class in getView method you can set tag for every view which is being created and view parameter in onItemClick method returns the same view and you can getTag and check whatever you want

answered Jul 22 '15 at 18:50

sadegh saati

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onItemClick get ID or Name of item on array

2 Answers2