1.Implicitly using the default locale is a common source of bugs: Use toLowerCase(Locale) instead

  toLowerCase(Locale.getDefault())

  clean后就没有warninng了

2..Implicitly using the default locale is a common source of bugs: Use toUpperCase(Locale) instead

    增加Local:toUpperCase(Locale.getDefault());\

3.Replace "..." with ellipsis character (…, …) ?

   用 … 代替 ... ,注意 &#; 这三个符号都不能少 。