How to get all the arrays lists defined in arrays.xml?

Question

There are various arrays defined in arrays.xml. I want to read all the arrays at once and store them. Is there any way to do this?

    <string-array name="ArtDesign">
            <item>Layers</item>
            <item>Tracing</item>
    </string-array>

    <string-array name="Beauty">
            <item>Plastic Surgery Simulation</item>
            <item>SeneStock</item>
            <item>PLASTIC SURGERY BEFORE</item>
    </string-array>

https://stackoverflow.com/questions/19127071/change-string-array-in-strings-xml-to-arraylist use this link to get the array list from array.xml file — sneha desai, Jun 03 '17 at 04:43
I have around 100 of arrays in xml file and i want to load them dynamically. Is it Possible to generate R.arrays.variable_name so that I can iterate variable_name with different strings and load them? — Anunay Sharma, Jun 03 '17 at 08:32

score 3 · Answer 1 · answered Jun 03 '17 at 05:17

For example if you have string array like below:

`

<?xml version="1.0" encoding="utf-8"?>
    <resources>
      <string-array name="planets_array">
        <item>Mercury</item>
        <item>Venus</item>
        <item>Earth</item>
        <item>Mars</item>
    </string-array>
</resources>

`

Then you can achieve in java class like this:

Resources res = getResources();
    String[] planets = res.getStringArray(R.array.planets_array);

So in your case:

String[] artDesign = getResources.getStringArray(R.array.ArtDesign);
String[] beauty = getResources.getStringArray(R.array.Beauty);

I have around 100 of arrays in xml file and i want to load them dynamically. — Anunay Sharma, Jun 03 '17 at 08:30

score 1 · Answer 2 · answered Jun 03 '17 at 04:59

1

You have to create two arraylists

List<String> artDdesignList = Arrays.asList(getResources().getStringArray(R.array.ArtDesign));

List<String> beautyList = Arrays.asList(getResources().getStringArray(R.array.Beauty));

answered Jun 03 '17 at 04:59

Pratik

452
4
17

I have around 100 of arrays in xml file and i want to load them dynamically. – Anunay Sharma Jun 03 '17 at 08:29

score 0 · Answer 3 · answered Jun 03 '17 at 05:21

0

When you create an array resource, There is a unique constant generated by android studio to represent that resource which is R.array.*. You need to use reflection to find all the constants in R.array class and retrieve the resources associated with it.

answered Jun 03 '17 at 05:21

Samuel Robert

10,106
7
39
60

Can you please elaborate? – Anunay Sharma Jun 03 '17 at 08:33
I have around 100 of arrays in xml file and i want to load them dynamically. Is it Possible to generate R.arrays.variable_name so that I can iterate variable_name with different strings and load them – Anunay Sharma Jun 03 '17 at 08:33

score 0 · Answer 4 · edited Aug 06 '18 at 06:21

After much thinking I think we can read the resource file from InputStreamReader and process the text as we want. By this we can make a hashMap and store all the required values in them.

public static HashMap<String, ArrayList<String>> readRawTextFile(Context ctx, int resId)
{
    InputStream inputStream = ctx.getResources().openRawResource(resId);

    InputStreamReader inputreader = new InputStreamReader(inputStream);
    BufferedReader buffreader = new BufferedReader(inputreader);
    String line;
    StringBuilder text = new StringBuilder();
    ArrayList<String> value = new ArrayList<>();
    HashMap<String,ArrayList<String>> hashMap = new HashMap<>();

    try {
        String key;
        while (( line = buffreader.readLine()) != null) {
            if(line.indexOf("string-array")!=-1){
                key = line; // add logic to refine for the req substring
            } else if(line.indexOf("/string-array"){
                hashMap.add(key, value);
                value = new ArrayList<>();
            } else{
                value.add(line); //add logic to refine for the req string
            }
        }
    } catch (IOException e) {
        return null;
    }
    return hashMap;
}

How to get all the arrays lists defined in arrays.xml?

4 Answers4