How to retrieve metadata from image file in Android

问题

How can I retrieve metadata information such as format (jpeg, bmp, png, ..), width, height etc. from image files in Android environment?

回答1:

You can extract the width, height, and MIME type of an image like this:

    BitmapFactory.Options opts=new BitmapFactory.Options();
    opts.inJustDecodeBounds=true;
    BitmapFactory.decodeFile("/sdcard/path/to/imagefile.blah", opts);
    Log.i(TAG, "Mimetype:" + opts.outMimeType);
    Log.i(TAG, "Width:" + opts.outWidth);
    Log.i(TAG, "Height:" + opts.outHeight);

回答2:

Yes, try looking up the ContentValues class, contentResolver() function, and the URI class. This should have the information you need do whatever you're trying to do.

来源：https://stackoverflow.com/questions/4928660/how-to-retrieve-metadata-from-image-file-in-android