Android: error when creating an array of items

Question

I following the answer in this topic Gridview with two columns and auto resized images

But, I get error at this line

items.add(new Item("Red", R.drawable.red));

The cause is the requirement of 2nd params is a String. But, R.drawable.red is integer.

So, anyone can teach me solve this problem?

Thanks

@DenisKulygin IDE (eclipse) suggest: 1.Remove argument to match Item(CharSequence)' 2.Change type of 'red' to 'String' — Anon, Aug 29 '14 at 10:11
In your example defined 'Item' class, where you define this? — Denis Kulygin, Aug 29 '14 at 10:14

score 1 · Accepted Answer · answered Aug 29 '14 at 10:10

1

You need to create your custom Item class, which has the following constructor.

class Item {
    Item(String str, int id) {
    ..
    }
}

answered Aug 29 '14 at 10:10

Swayam

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Thanks for your answer. sorry all because this stupid question, I come back to programming for a long time not touching – Anon Aug 29 '14 at 10:27
Don't apologize. Happens to all of us. Glad I could be of help. :) – Swayam Aug 29 '14 at 10:29

score 0 · Answer 2 · answered Aug 29 '14 at 10:12

If 2nd param's type is String just convert the id to a string:

items.add(new Item("Red", String.valueOf(R.drawable.red)));

Later you can convert to integer with Integer.valueOf(str);

However you should change the class constructors parameter type to int as the other answer suggested. You wouldn't need to convert at all.

score 0 · Answer 3 · answered Aug 29 '14 at 10:15

0

Sorry, but reviewing the topic you posted, the 2nd parameter in the Item class is int not String

answered Aug 29 '14 at 10:15

sergiomse

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yes, in that topic the 2nd param is Int, but I use default Item in android the method add require 2nd param is String. I am trying to create a class Item as Swayam suggested – Anon Aug 29 '14 at 10:18

score 0 · Answer 4 · answered Aug 29 '14 at 10:15

You want to change second param is string? In your link sample code MyAdapter Class have modal class Item you need to change like that.

private class Item {
        final String name;
        final String drawableId;

    Item(String name, String drawableId) {
        this.name = name;
        this.drawableId = drawableId;
    }
}

Android: error when creating an array of items

4 Answers4