查询返回目录下的指定类型文件

/**
* 获得path路径下的docType文件,适用与android和pc
* @param path
* @param docType
* @return 
*/
public ArrayList<String> getDocAnyType(String path,String docType) {

     ArrayList<String> docArrayList = new ArrayList<String>();

File file = new File(path);

for (String doc : file.list()) {

if (doc.lastIndexOf(".") > 0)

 {   if (doc.substring(doc.lastIndexOf("."), doc.length() )

.equals(docType)) {
docArrayList.add(doc);
}
}
}
return docArrayList;
}