reference string-arrays in android strings.xml

Question

I'd like to reference a string-array from another string-array in the strings.xml. If I try to read the string-array (named "plants") in my activity the value of every item is null.

Is there a possibility to get these values?

Here is the part of the strings.xml:

<string name="Orlaya_grandiflora_1">Orlaya grandiflora</string>
<string name="Orlaya_grandiflora_2">Large-Flowered Orlaya</string>
<string name="Orlaya_grandiflora_3">Apiaceae</string>
<string-array name="Orlaya_grandiflora">
    <item>@string/Orlaya_grandiflora_1</item>
    <item>@string/Orlaya_grandiflora_2</item>
    <item>@string/Orlaya_grandiflora_3</item>
</string-array>
<string-array name="plants">
    <item>@array/Ginkgo_biloba</item>
    <item>@array/Capsicum_frutescens</item>
    <item>@array/Viscum_album</item>
    <item>@array/Orlaya_grandiflora</item>
</string-array>

I try to access the values like this, for example:

String[] plantArray = resources.getStringArray(R.array.plants);

for (String plant : plantArray) {
        System.out.println("--> " + plant);
    }

The values of plant is in every case "null"

Anybody knows how to access the values?

what is exacly "resources"? object or else?

Paresh Mayani
– Paresh Mayani

2012-01-04 13:33:13 +00:00
Commented Jan 4, 2012 at 13:33 — Paresh Mayani
– Paresh Mayani, Commented Jan 4, 2012 at 13:33
this was missing: Resources resources = getResources();

alex3000
– alex3000

2012-01-04 13:46:31 +00:00
Commented Jan 4, 2012 at 13:46 — alex3000
– alex3000, Commented Jan 4, 2012 at 13:46

Paresh Mayani · Accepted Answer · 2012-01-04 13:34:42Z

21

Straight example given on: Android - String Resources

enter image description here

answered Jan 4, 2012 at 13:34

Paresh Mayani

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8 Comments

alex3000 Over a year ago

this does not work with references to string-arrays, as I wrote thi side up

eMich Over a year ago

Why would you put string arrays inside string arrays? Is that even possible? To me it seems you can only put string resources inside the items and not string-arrays.

Paresh Mayani Over a year ago

@eMich where i have mentioned about putting string arrays inside string arrays?

Paresh Mayani Over a year ago

@eMich and yes i think you may right putting only string resources inside the items.

Amitsharma Over a year ago

@Paresh Mayani have u any example ....to read more about string array i have search more and more on stack-over flow i have read your website many questions if u have any example link please send me thank you

|

Ovidiu Latcu · Accepted Answer · 2012-01-04 14:08:03Z

8

You should do the following :

  //obtain the array that refrences others array
  TypedArray plantArray=getResources().obtainTypedArray(R.array.plants);
  //obtain the referenced arrays
  CharSequence[] ginkoArray=plantArray.getTextArray(0);
  //...
  CharSequence[] orlayaArray=plantArray.getTextArray(3);

edited Jan 4, 2012 at 14:08

answered Jan 4, 2012 at 13:48

Ovidiu Latcu

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Comments

duggu · Accepted Answer · 2015-07-01 10:59:27Z

public class Test extends ListActivity {
  String[] presidents;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ListView lstView = getListView();
    // lstView.setChoiceMode(0); //CHOICE_MODE_NONE
    // lstView.setChoiceMode(1); //CHOICE_MODE_SINGLE
    lstView.setChoiceMode(2); // CHOICE_MODE_MULTIPLE
    lstView.setTextFilterEnabled(true);

    presidents = getResources().getStringArray(R.array.presidents_array);

    setListAdapter(new ArrayAdapter<String>(this,
        android.R.layout.simple_list_item_checked, presidents));
  }

  public void onListItemClick(ListView parent, View v, int position, long id) {
    parent.setItemChecked(position, parent.isItemChecked(position));

    Toast.makeText(this, "You have selected " + presidents[position],
        Toast.LENGTH_SHORT).show();
  }
};

main.xml

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



</LinearLayout>

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, MainActivity!</string>
    <string name="app_name">BasicViews5</string>
    <string-array name="presidents_array">
        <item>Dwight D. Eisenhower</item>
        <item>John F. Kennedy</item>
        <item>Lyndon B. Johnson</item>
        <item>Richard Nixon</item>
        <item>Gerald Ford</item>
        <item>Jimmy Carter</item>
        <item>Ronald Reagan</item>
        <item>George H. W. Bush</item>
        <item>Bill Clinton</item>
        <item>George W. Bush</item>
        <item>Barack Obama</item>
    </string-array>
</resources>

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