StreamLocalUriFetcher.java 文件源码

private InputStream loadResourceFromUri(Uri uri, ContentResolver contentResolver)
    throws FileNotFoundException {
  switch (URI_MATCHER.match(uri)) {
    case ID_CONTACTS_CONTACT:
      return openContactPhotoInputStream(contentResolver, uri);
    case ID_CONTACTS_LOOKUP:
      // If it was a Lookup uri then resolve it first, then continue loading the contact uri.
      uri = ContactsContract.Contacts.lookupContact(contentResolver, uri);
      if (uri == null) {
        throw new FileNotFoundException("Contact cannot be found");
      }
      return openContactPhotoInputStream(contentResolver, uri);
    case ID_CONTACTS_THUMBNAIL:
    case ID_CONTACTS_PHOTO:
    case UriMatcher.NO_MATCH:
    default:
      return contentResolver.openInputStream(uri);
  }
}