subString 截取“，”前面，或者后面的字符串，substring字符串

subString 截取“，”前面，或者后面的字符串，substring字符串

String a = items1.get(j).toString();
parentId = a.substring(0,a.indexOf(",")).trim();//逗号前面
levelCode = a.substring(a.indexOf(",")+1).trim();//逗号后面