How Android implements files in chronological order display

2. <span style="FONT-SIZE:18PX;" >file[] Files =parentfile.listfiles (filefilter); //By Filefileter filter to get the desired type of sub-file under the Parentfile path
4. arraylist<fileinfo> fileList = new arraylist<fileinfo> (); Deposit the required sub-file information into FileInfo
6. For (int i = 0; i < files.length; i++) {
8. File file = Files[i];
10. FileInfo FileInfo = new FileInfo ();
12. Fileinfo.name = File.getname ();
14. Fileinfo.path = File.getpath ();
16. Fileinfo.lastmodified= file.lastmodified ();
18. Filelist.add (FileInfo);
20. }
22. Collections.sort (FileList, new Filecomparator ());   By overriding comparator implementation class Filecomparator, you can sort by file creation time.
24. Report:
26. Public class Filecomparator implements comparator<fileinfo> {
28. public int compare (FileInfo file1, FileInfo file2) {
30. if (file1.lastmodified < file2.lastmodified)
32. {
34. return-1;
36. }Else
38. {
40. return 1;
42. }
44. }
46. }
48. Public FileFilter filefilter = new FileFilter () {
50. Public Boolean accept (file file) {
52. String tmp = File.getname (). toLowerCase ();
54. if (Tmp.endswith (". mov") | | tmp.endswith (". jpg")) {
56. return true;
58. }
60. return false;
62. }
64. };</span>

Similarly: By overriding the Compare method in the comparator implementation class, the display is arranged by file size, file name, and so on.

How Android implements files in chronological order display