how to read particular key value in string.xml on android?

Question

string.xml contains lot of keys with value. I want to get particular value based on key.

For example, string.xml contains key1, key2 up to key100. I displaying these keys into ListView. If user select the key50 means I want to displaying the corresponding value in TextView. How to achieve this?

Sample string.xml file,

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<resources>
    <string name="key1">value 1</string>
    <string name="key2"> value 2 </string>
     ...
     ...
    <string name="key100"> value 100 </string>
</resources>

What exactly is in your ListView? Text strings such as "key1", "key2" etc. etc.? In that case you can get the value of the string resource by name - first get the id by calling the "getIdentifier" method in the "android.content.res.Resources" class (defType=string, defPackage=your package name). — Jens
– Jens, Commented Oct 18, 2011 at 12:12

Bosah Chude · Accepted Answer · 2011-10-18 12:09:45Z

4

You should save your key as a string array resource like this

<string-array name="my_keys">
    <item>Key 1</item>
    <item>Key 2</item>
    <item>Key 3</item>
    <item>Key 4</item>
    <item>Key 5</item>
    <item>Key 6</item>
</string-array>

Populate the listView with the following code.

String[] myKeys = getResources().getStringArray(R.array.my_keys);
ListView mListView = (ListView)findViewById(R.id.yourListView);
mListView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, myKeys));

Retrieve the clicked item and put the value into the TextView

TextView myTextView = (TextView)findViewById(R.id.yourTextView);
  mListView.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
      myTextView = ((TextView) view).getText();
    }
  });

answered Oct 18, 2011 at 12:09

Bosah Chude

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2 Comments

bharath Over a year ago

This should be get the selected value in the ListView. But I want to get value from string.xml based this selected value.

Bosah Chude Over a year ago

The string.xml contains the string-array and other resources you define there. Its up to you to retrieve those variable based on the clicked item. Anytime you wish to read the value of a resource, just use getResources()

Peter Knego · Accepted Answer · 2011-10-18 12:02:35Z

3

If you have a <string name="key">string value</string> resources then the only way is to access them by key:

String value = context.getString(R.string.key);

Btw, if you need to store some arbitrary data into your Views (the ones inside your ListView), use view.setTag(object) and view.getTag().

answered Oct 18, 2011 at 12:02

Peter Knego

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2 Comments

bharath Over a year ago

yeah. I know. But I need to get particular key value based on user selection.

Peter Knego Over a year ago

I updated the answer. Basically you can store/retrieve arbitrary objects inside the View.

Saurabh · Accepted Answer · 2011-10-18 11:56:19Z

0

I will suggest to use XPath to get your value for keys.

answered Oct 18, 2011 at 11:56

Saurabh

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1 Comment

Arnab Chakraborty Over a year ago

Why dont you simply use the context.getResources.getString() ?

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