kotlin - get image from image array in drawable folder

Question

I want to return my array of images from resource , this is my array for example :

 <integer-array name="drawer_icons">
    <item>@drawable/drawer_home</item>
</integer-array>

I get the array by this code:

val imagesArray =resources.getIntArray(R.array.drawer_icons)

the problem is , after the above code ,imagesArray has a value of 0

how can I return drawable array from resources ?

EDIT: I've made some changes in my codes, I've got another problem , I need to make a data class from these arrays , this is my code:

data class DrawerModel(var title:String, var img: Any)

val titlesArray=resources.getStringArray(R.array.drawer_titles)
    val imagesArray =resources.obtainTypedArray(R.array.drawer_icons)

    val list= ArrayList<DrawerModel>()
    for (i in titlesArray.indices){
        val model=DrawerModel(titlesArray[i],imagesArray[i])
        list.add(model)
    }

I've an error on imagesArray[i] , what should be the type of img in DrawerModel class? I've tried any , Int , String but non of them works

Alok Mishra · Accepted Answer · 2019-10-30 16:06:35Z

In Kotlin , you can do as :-

 <integer-array name="drawer_icons">
    <item>@drawable/drawer_home</item>
</integer-array>

// You will get array of Image from resource as TypedArray

 val imageArray = resources.obtainTypedArray(R.array.drawer_icons)

// get resource ID by the index

imageArray.getResourceId(imageArray.getIndex(0),-1)

// OR you can set imageView's resource to the id

imageView.setImageResource(imageArray.getResourceId(imageArray.getIndex(0),-1))

// and in last recycle the array

imageArray.recycle()

For your extending of question , solution would be :-

 data class DrawerModel(var title:String, var img: Int)

 val titlesArray=resources.getStringArray(R.array. drawer_titles)
 val imagesArray =resources.obtainTypedArray(R.array. drawer_icons)

 val list= ArrayList<DrawerModel>()
 for (i in titlesArray.indices){
      val model=DrawerModel(titlesArray[i],imagesArray.getResourceId(imagesArray.getIndex(i),-1))
      list.add(model)
 }

Stanislav Bondar · Accepted Answer · 2019-10-30 15:02:17Z

1

This is not just an int array. You should use

val imagesArray = resources.obtainTypedArray(R.array.drawer_icons)

val icon = imagesArray.getResourceId(position, -1)

And don't forget to call imagesArray.recycle() after using it.

answered Oct 30, 2019 at 15:02

Stanislav Bondar

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2 Comments

Navid Abutorab Over a year ago

thanks for reply , I've made the changes now I've some other problems, could you check my edited post ?

Stanislav Bondar Over a year ago

@NavidAbutorab this is @DrawableRes imgage: Int

Bruno · Accepted Answer · 2019-10-30 15:22:28Z

1

You have to use TypedArray

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

Example :

XML

<integer-array name="drawer_icons">
    <item>@drawable/drawer_home</item>
</integer-array>

Kotlin

val imageArray = resources.obtainTypedArray(R.array.drawer_icons)
val drawable: Drawable = imageArray.getDrawable(0)

edited Oct 30, 2019 at 15:22

answered Oct 30, 2019 at 15:01

Bruno

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2 Comments

Navid Abutorab Over a year ago

thanks for reply , I've made the changes now I've some other problems, could you check my edited post

Bruno Over a year ago

answer edited: you have to use Drawable for example

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