can i get image file width and height from uri in android?

Question

i can getting the image width through MediaStore.Images.Media normally

but i need to getting the image width and height from image which selected from dropbox

so currently i have following method to getting image size from dropbox

private void getDropboxIMGSize(Uri uri){
    String size = Long.toString(new File(uri.getPath()).length());
    return size;
}

but what i actually need are getting the file width and height value

anyone know how to achieve that?please help!

Answer 1

private void getDropboxIMGSize(Uri uri){
   BitmapFactory.Options options = new BitmapFactory.Options();
   options.inJustDecodeBounds = true;
   BitmapFactory.decodeFile(new File(uri.getPath()).getAbsolutePath(), options);
   int imageHeight = options.outHeight;
   int imageWidth = options.outWidth;
 
}

no there is no way. You have to create a Bitmap object. if you use the inJustDecodeBounds flag the bitmap would not be loaded in memory. In fact BitmapFactory.decodeFile will return null. In my example uri is the phisical path to the image

Answer 2

Blackbelt's answer is correct if you have a file uri. However, if you are using the new file providers as in the official camera tutorial, it won't work. This works for that case:

BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(
        getContext().getContentResolver().openInputStream(mPhotoUri),
        null,
        options);
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;

Answer 3

Blackbelt's answer will work most of the time using Options, but I would like to propose another solution or fallback solution by using the ExifInterface. If you have the image URI, you can create the ExifInterface using the full path, no need for Bitmap object nor BitmapFactory.Options.

ex.

int width = exif.getAttributeInt( ExifInterface.TAG_IMAGE_WIDTH, defaultValue );
int height = exif.getAttributeInt( ExifInterface.TAG_IMAGE_LENGTH, defaultValue ); 

Answer 4

the solution is use new File(uri.getPath()).getAbsolutePath() instead of uri.toString()

Answer 5

The accepted answer returns with me a 0 of width/height, by replacing uri.getPath() with uri.getLastPathSegment(), it returns the correct dimensions

public static int[] getImageDimension(Uri uri){
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFile(new File(uri.getLastPathSegment()).getAbsolutePath(), options);
    return new int[]{options.outWidth, options.outHeight};
}