isPng static method

bool isPng(
  1. List<int>? imageData
)

Check whether the picture is png.

Implementation

static bool isPng(List<int>? imageData) {
  if (imageData != null && imageData.length >= _pngSignature.length) {
    for (int i = 0; i < _pngSignature.length; i++) {
      if (_pngSignature[i] != imageData[i]) {
        return false;
      }
    }
    return true;
  } else {
    return false;
  }
}