Android - Dynamically changing ImageView s from an array

Question

I have an array of Images, and I am trying to change image views to match these drawables. For some reason, they are simply not being drawn at all.

Here is my code so far:

TypedArray answerResources = res.obtainTypedArray(R.array.answers);
int resId = answerResources.getResourceId(randomQuestion, -1);
answerResources.recycle();

int [] questionAnswers = res.getIntArray(resId);

firstAnswerImg .setImageResource(questionAnswers[0]);
secondAnswerImg.setImageResource(questionAnswers[1]);
thirdAnswerImg .setImageResource(questionAnswers[2]);
fourthAnswerImg.setImageResource(questionAnswers[3]);

Here is the xml:

<array name = "answers">
    <item>@array/questionOneAnswers</item>
    <item>@array/questionTwoAnswers</item>
    <item>@array/questionThreeAnswers</item>
...
</array>

    <integer-array name = "questionOneAnswers">
        <item>@drawable/da</item>
        <item>@drawable/sk</item>
        <item>@drawable/cq</item>
        <item>@drawable/ht</item>
    </integer-array>

What am I missing??

Mike · Accepted Answer · 2018-06-28 20:53:05Z

1

EDIT: My bad, I see the nesting now. I think you need to use typed arrays (just like you did for the outer ones), like so:

<array name="answers">
  <item>@array/questionOneAnswers</item>
  <item>@array/questionTwoAnswers</item>
  <item>@array/questionThreeAnswers</item>
</array>
...
<array name="questionOneAnswers">
  <item>@drawable/da</item>
  <item>@drawable/sk</item>
  <item>@drawable/cq</item>
  <item>@drawable/ht</item>
</array>

Then, pull from the array like so:

TypedArray answers = res.obtainTypedArray(R.array.answers);
int questionOneAnswersId = answerResources.getResourceId(0, 0));
TypedArray questionOneAnswers = res.obtainTypedArray(questionOneAnswersId);
firstAnswerImg.setImageDrawable(questionOneAnswers.getDrawable(0);
....

edited Jun 28, 2018 at 20:53

answered Jun 28, 2018 at 20:33

Mike

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2 Comments

microflakes Over a year ago

this works, but not what I'm looking for. I want to access it through nested arrays. See my original xml

Mike Over a year ago

Ah sorry, missed that. Edited my answer, check it out now.

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