ContactAccessor.java 文件源码

public boolean isSystemContact(Context context, String number) {
  Uri      uri        = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
  String[] projection = new String[]{PhoneLookup.DISPLAY_NAME, PhoneLookup.LOOKUP_KEY,
                                     PhoneLookup._ID, PhoneLookup.NUMBER};
  Cursor   cursor     = context.getContentResolver().query(uri, projection, null, null, null);

  try {
    if (cursor != null && cursor.moveToFirst()) {
      return true;
    }
  } finally {
    if (cursor != null) cursor.close();
  }

  return false;
}