Could android store drawable ids like an integer-array?

问题

I want a drawable id array of integer values which I can store like an integer-array in res/values/XXX.xml by using integer-array tag. Below is integer-array declared in strings.xml

<integer-array name="icons">
     <item>1</item>
     <item>2</item>
     <item>3</item>
     <item>4</item>
</integer-array>

But I want to store drawable image ids like @drawable/someImage as an integer array in xml.

OR Is there any alternatives to store drawable integer ids as an integer array in xml.

回答1:

I think TypedArray is what you are looking for. I have samples using it. If you are interested, take a look at codes below:

First, integer-array in res/values/arrays.xml:

<integer-array name="frag_home_ids">
    <item>@drawable/frag_home_credit_return_money</item>
    <item>@drawable/frag_home_transfer</item>
    <item>@drawable/frag_home_balance</item>
    <item>@drawable/frag_home_charge</item>
    <item>@drawable/frag_home_finance_cdd</item>
    <item>@drawable/frag_home_finance_ybjr</item>
    <item>@drawable/frag_home_more</item>
</integer-array>

Second, get resource integer values programmatically:

TypedArray tArray = getResources().obtainTypedArray(
            R.array.frag_home_ids);
int count = tArray.length();
int[] ids = new int[count];
for (int i = 0; i < ids.length; i++) {
    ids[i] = tArray.getResourceId(i, 0);
}
//Recycles the TypedArray, to be re-used by a later caller. 
//After calling this function you must not ever touch the typed array again.
tArray.recycle();

Third, call the integer values like this:

holder.iv.setImageResource(ids[position]);

Of course, you can get integer values of string, color, integer, layout, menu...in this way.

I hope these codes will inspire you.

回答2:

Take a look at documentation, specifically More Resource Types article. Quote:

Typed Array
A TypedArray defined in XML. You can use this to create an array of other resources, such as drawables.

EXAMPLE:
XML file saved at res/values/arrays.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <array name="icons">
        <item>@drawable/home</item>
        <item>@drawable/settings</item>
        <item>@drawable/logout</item>
    </array>
    <array name="colors">
        <item>#FFFF0000</item>
        <item>#FF00FF00</item>
        <item>#FF0000FF</item>
    </array>
</resources>

回答3:

You can use a string array.

Extract:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="media_names">
        <item>Big Buck Bunny</item>
        <item>Elephants Dream</item>
        <item>Sintel</item>
        <item>Tears of Steel</item>
    </string-array>

    <string-array name="media_uris">
        <item>http://archive.org/download/BigBuckBunny_328/BigBuckBunny_512kb.mp4</item>
        <item>http://archive.org/download/ElephantsDream_277/elephant_dreams_640_512kb.mp4</item>
        <item>http://archive.org/download/Sintel/sintel-2048-stereo_512kb.mp4</item>
        <item>http://archive.org/download/Tears-of-Steel/tears_of_steel_720p.mp4</item>
    </string-array>
</resources>

What is it that you want to achieve, I cannot 100% tell you if this is the best choice for you.

来源：https://stackoverflow.com/questions/29819204/could-android-store-drawable-ids-like-an-integer-array

标签

android

android-drawable

android-resources