中文转拼音

下面的案例是 获取 姓全拼，名首拼 张三丰 --> zhangsf

ChineseHelper.ConvertPinyin(lastName) 获取全拼

ChineseHelper.getFirstLetter 获取首拼

var lastName = item.nick_name.substring(0, 1); // 获取姓
var firstName = item.nick_name.substring(1); // 获取名
var login_name = ChineseHelper.ConvertPinyin(lastName) +  ChineseHelper.getFirstLetter(firstName);//