How to change an ImageView with a filename

Question

I have a string with the name of the file that I want (R.drawable.square) to put in the imageview.

String shape = "square"

I am trying to use the method below to show the image

imageView.setImageResource()

Hardcoding the filename in works but I want to be able to pass different filenames in.

image.setImageResource(R.drawable.square)

tl;dr can't get from String:"square" to int:R.drawable.square

let's try this https://stackoverflow.com/questions/6783327/setimageresource-from-a-string — Nam Hoang, Mar 10 '18 at 02:34
Possible duplicate of [Android, reference things in R.drawable. using variables?](https://stackoverflow.com/questions/7941304/android-reference-things-in-r-drawable-using-variables) — ADM, Mar 10 '18 at 02:59

Mark Han · Accepted Answer · 2018-03-10T03:05:31.173

3

Please see Android, reference things in R.drawable. using variables?

//to retrieve image in res/drawable and set image in ImageView
String imageName = "picture"
int resID = getResources().getIdentifier(imageName, "drawable", "package.name");
ImageView image;
image.setImageResource(resID );

edited Mar 10 '18 at 03:05

answered Mar 10 '18 at 02:37

Mark Han

2,785
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1

Citing a link is not consider the answer. – sg7 Mar 10 '18 at 02:45

score 0 · Answer 2 · answered Mar 10 '18 at 02:58

0

I achieved the effect by putting the images in the assets directory

answered Mar 10 '18 at 02:58

SadeepDarshana

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score 0 · Answer 3 · answered Mar 10 '18 at 07:12

I think it's better to use you Strings as key and your resource ids as value in a Map Object.

    Map<String, Integer> resources = new HashMap<>();

    resources.put("square", R.drawable.square);
    // resources.put("...", R.drawable....);

    imageView.setImageResource(resources.get("square"));

How to change an ImageView with a filename

3 Answers3