安卓文件管理器

• 排序文件

  static public void sortFiles(File[] mf, int mode) {
      switch (mode) {
      case FileConst.SORT_NAME:
          Arrays.sort(mf, new Comparator<File>() {
              public int compare(File object1, File object2) {
                  return object1.getName().compareTo(object2.getName());
              }
          });
          break;
      case FileConst.SORT_DATE:
          Arrays.sort(mf, new Comparator<File>() {
              public int compare(File object1, File object2) {
                  if (object1.lastModified() < object2.lastModified()) {
                      return -1;
                  } else if (object1.lastModified() == object2.lastModified()) {
                      return 0;
                  } else
                      return 1;
              }
          });
          break;
      case FileConst.SORT_TYPE:
          Arrays.sort(mf, new Comparator<File>() {
              public int compare(File object1, File object2) {
                  if ( object1.getName().lastIndexOf('.') == -1 )
                      return -1;
                  else if ( object2.getName().lastIndexOf('.') == -1 )
                      return 1;
                  String obj1 = object1.getName().substring(object1.getName().lastIndexOf('.')).toLowerCase();
                  String obj2 = object2.getName().substring(object2.getName().lastIndexOf('.')).toLowerCase();
                  return obj1.compareTo(obj2);
              }
          });
          break;
      case FileConst.SORT_GENRE:
           Arrays.sort(mf, new Comparator<File>() {
               public int compare(File object1, File object2) {
                  if( object1.isDirectory())
                       return -1;
                  else if(object2.isDirectory())
                       return 1;
                  AudioFile obj1 = new AudioFile(new MtkFile(object1));
                   AudioFile obj2 = new AudioFile(new MtkFile(object2));
                  MetaData mMetaData1 = obj1.getMetaDataInfo();
                  MetaData mMetaData2 = obj2.getMetaDataInfo();
                   if( mMetaData1 == null )
                       return -1;
                   else if( mMetaData2 == null )
                       return 1;
                   String info1 = mMetaData1.getGenre();
                   String info2 = mMetaData2.getGenre();
                   if( info1 == null )
                       return -1;
                   else if( info2 == null )
                       return 1;
                  return info1.compareTo(info2);
               }
           });
          break;
      case FileConst.SORT_ARTIST:
           Arrays.sort(mf, new Comparator<File>() {
               public int compare(File object1, File object2) {
                  if( object1.isDirectory())
                       return -1;
                  else if(object2.isDirectory())
                       return 1;
                  AudioFile obj1 = new AudioFile(new MtkFile(object1));
                   AudioFile obj2 = new AudioFile(new MtkFile(object2));
                  MetaData mMetaData1 = obj1.getMetaDataInfo();
                  MetaData mMetaData2 = obj2.getMetaDataInfo();
                   if( mMetaData1 == null )
                       return -1;
                   else if( mMetaData2 == null )
                       return 1;
                   String info1 = mMetaData1.getArtist();
                   String info2 = mMetaData2.getArtist();
                   if( info1 == null )
                       return -1;
                   else if( info2 == null )
                       return 1;
                  return info1.compareTo(info2);
               }
           });
          break;
      case FileConst.SORT_ALBUM:
          Arrays.sort(mf, new Comparator<File>() {
              public int compare(File object1, File object2) {
                  if( object1.isDirectory())
                          return -1;
                      else if(object2.isDirectory())
                          return 1;
                  AudioFile obj1 = new AudioFile(new MtkFile(object1));
                  AudioFile obj2 = new AudioFile(new MtkFile(object2));
                  MetaData mMetaData1 = obj1.getMetaDataInfo();
                  MetaData mMetaData2 = obj2.getMetaDataInfo();
                   if( mMetaData1 == null )
                       return -1;
                   else if( mMetaData2 == null )
                       return 1;
                  String info1 = mMetaData1.getAlbum();
                   String info2 = mMetaData2.getAlbum();
                   if( info1 == null )
                       return -1;
                   else if( info2 == null )
                       return 1;
                  return info1.compareTo(info2);
              }
          });
          break;
  
      default:
          break;
      }
  }
  

• 判断文件类型

private boolean filterFile(String[] mode) {
   if (mode == null) {
     return false;
   }
   for (String s : mode) {
     if (this.getName().toLowerCase().endsWith(s)) {
       return true;
     }
   }
   return false;
 }
public static final String audioSuffix[] = {
     ".mp3", ".wma", ".m3u",
     ".m3u8", ".wav", ".aif", ".m4a", ".aac", ".ac3", ".ec3", ".pls",
     ".wpl", ".ogg", ".mp2", ".ra", ".flac", ".ape", ".amr", ".ac4"
     ,".awb",".rm"
 };
 public static final String videoSuffix[] = {
     ".rmvb", ".avi", ".mkv",
     ".mp4", ".3gp", ".flv", ".mpg", ".ts", ".wmv", ".vob", ".rm",
     ".mov", ".avs", ".divx", ".asf", ".mpe", ".mpeg", ".dat", ".asx",
     ".m4v", ".tp", ".trp", ".tts", ".m2ts", ".mts", ".m1v", ".m2v",
     ".m4v", ".264", ".vc1", ".flv", ".hlv", ".pvr", ".ogm", ".webm",
     ".ram", ".iso", ".ssif", ".264", ".265", ".avs2", ".heic", ".ivf",
     ".m2t"
 };
public static final String photoSuffix[] = {
     ".png", ".bmp", ".jpg",
     ".PNG", ".jpeg", ".gif", ".webp", ".heif", ".heic"
 };
public boolean isPhotoFile() {

   return filterFile(FileConst.photoSuffix);
 }

原文地址：https://blog.csdn.net/qq_44203816/article/details/136528673

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