public boolean isRtl(String str){
  return mDefaultTextDirectionHeuristicCompat.isRtl(str,0,str.length());
}

public boolean isRtl ( String str ) { return mDefaultTextDirectionHeuristicCompat . isRtl ( str , 0 , str . length ( ) ) ; }
estimates the directionality of a string using the default text direction heuristic .
