public static boolean isMetaDataAvailable(EncodedImage encodedImage) {
    return encodedImage.mRotationAngle >= 0
        && encodedImage.mWidth >= 0
        && encodedImage.mHeight >= 0;
  }
Returns true if all the image information has loaded, false otherwise.
imagepipeline-base/src/main/java/com/facebook/imagepipeline/image/EncodedImage.java