Android-Android下怎么遍历assets录下的子文件夹

答案:2 悬赏:50 手机版

解决时间 2021-12-21 22:28

提问者网友：我一贱你就笑
2021-12-21 06:32

最佳答案

五星知识达人网友：野慌
2021-12-21 07:00

此代码未使用递归：
import java.io.File;
import java.util.LinkedList;
public class FileSystem {
public static void main(String[] args) {

long a = System.currentTimeMillis();

LinkedList list = new LinkedList();
File dir = new File("c:\\java\\");
File file[] = dir.listFiles();
for (int i = 0; i < file.length; i++) {
if (file[i].isDirectory())
list.add(file[i]);
else
System.out.println(file[i].getAbsolutePath());
}
File tmp;
while (!list.isEmpty()) {
tmp = list.removeFirst();
if (tmp.isDirectory()) {
file = tmp.listFiles();
if (file == null)
continue;
for (int i = 0; i < file.length; i++) {
if (file[i].isDirectory())
list.add(file[i]);
else
System.out.println(file[i].getAbsolutePath());
}
} else {
System.out.println(tmp.getAbsolutePath());
}
}

System.out.println(System.currentTimeMillis() - a);
}
}

全部回答

1楼网友：旧脸谱
2021-12-21 07:53

遍历文件夹可以有2中方式： a.不使用递归： import java.io.file; import java.util.linkedlist; public class filesystem { public static void main(string[] args) { long a = system.currenttimemillis(); linkedlist list = new linkedlist(); file dir = new file("c:\\java\\"); file file[] = dir.listfiles(); for (int i = 0; i < file.length; i++) { if (file[i].isdirectory()) list.add(file[i]); else system.out.println(file[i].getabsolutepath()); } file tmp; while (!list.isempty()) { tmp = list.removefirst(); if (tmp.isdirectory()) { file = tmp.listfiles(); if (file == null) continue; for (int i = 0; i < file.length; i++) { if (file[i].isdirectory()) list.add(file[i]); else system.out.println(file[i].getabsolutepath()); } } else { system.out.println(tmp.getabsolutepath()); } } system.out.println(system.currenttimemillis() - a); } } b.使用递归： import java.io.file; import java.util.arraylist; public class filesystem1 { private static arraylist filelist = new arraylist(); public static void main(string[] args) { long a = system.currenttimemillis(); refreshfilelist("c:\\java"); system.out.println(system.currenttimemillis() - a); } public static void refreshfilelist(string strpath) { file dir = new file(strpath); file[] files = dir.listfiles(); if (files == null) return; for (int i = 0; i < files.length; i++) { if (files[i].isdirectory()) { refreshfilelist(files[i].getabsolutepath()); } else { string strfilename = files[i].getabsolutepath().tolowercase(); system.out.println("---"+strfilename); filelist.add(files[i].getabsolutepath()); } } } }

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