CODEWITHSUNDEEP
androidbitmap
akramshonu
akramshonu

Reputation: 23

How to initialize the bitmap array in android?

I am novice in android development.I am developing a game.It has 20 images with image names like num1,num2,num3..,num20.

For reading all these images i have done this in java

for ( int i=0 ; i<n ; i++)
{
imgarr[i] = Toolkit.getDefaultToolkit().getImage( this.getClass().getResource("images/"+(i+1)+".png"));
}

My question is how to do the same in android?

How to read all those images into bitmap array in simple for loop?

I know in android we can read an image into bitmap as fallows

img = BitmapFactory.decodeResource(getResources(), R.drawable.image_name);

Is there any way to read all those images in for loop?

Thanks.

Upvotes: 2

Views: 6116

Answers (4)

Amritesh
Amritesh

Reputation: 96

define a array of image-id like this

int[] ImgArr = {R.drawable.image1, R.drawable.image2....};

Then you can iterate like this:

for ( int i=0 ; i<n ; i++)
{
 img = getResources().getDrawable(ImgArr [n]);
}

Upvotes: 0

Roman Black
Roman Black

Reputation: 3497

You can do it this way:

    for(int i = 0; i < count; i++){
        try{
            Class drawable = R.drawable.class;
            Field f = drawable.getField("num" + i);
            int id = f.getInt(null);
            img = BitmapFactory.decodeResource(getResources(), id);
        }catch(Exception ex){
        }
    }

But this is a bad way. You can use Assets folder.

Upvotes: 1

suitianshi
suitianshi

Reputation: 3340

You can construct a custom array which contains all the resource id of your image and using a for loop

for example:

int ids[] = new int[]{R.id.img1, R.id.img2};
for(int id : ids) {
    img = BitmapFactory.decodeResource(getResources(), id);
}

Upvotes: 1

Biraj Zalavadia
Biraj Zalavadia

Reputation: 28484

DO like this way

List<Bitmap> imgList = new ArrayList<Bitmap>();

        for ( int i=1 ; i<=n ; i++)
        {
            imgList.add(BitmapFactory.decodeResource(getResources(), getResources().getIdentifier("num" + i, "drawable", getPackageName()))); 
        }

Upvotes: 0

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