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Editorial Team
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Asked: 2026-06-11T17:43:43+00:00

This is my android code: InputStream input = getAssets().open("photo.jpg"); BitmapFactory.Options options = new BitmapFactory.Options();

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This is my android code:

InputStream input = getAssets().open("photo.jpg");
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(input, null, options);
System.out.println("### img size: " + options.outWidth + "x" + options.outHeight);

But I found no matter how big of my image, it always print:

### img size: 100x100

Where is wrong?

UPDATE

It works fine after I re-deploying my application, but I modified nothing. It’s strange but I want to keep this question here, maybe it will appear someday again.

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1 Answer

  1. Editorial Team

    //Read Bitmap Dimensions and Type

    BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(getResources(), R.id.myimage, options);
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;
String imageType = options.outMimeType;

    Ref here:

    //you didn’t assigned object name

    InputStream input = getAssets().open("photo.jpg");

    The BitmapFactory class provides several decoding methods (decodeByteArray(), decodeFile(), decodeResource(), etc.) for creating a Bitmap from various sources.

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