How to get all image files available in sdcard in android? [duplicate]

Answer 1

You can use below code to search all image from SD Card .

            private String SD_CARD_ROOT;
            File mFile=Environment.getExternalStorageDirectory();
    SD_CARD_ROOT=mFile.toString();


private List FindFiles() {
    final List tFileList = new ArrayList();
    Resources resources = getResources();
    // array of valid image file extensions
    String[] imageTypes = resources.getStringArray(R.array.image);
    FilenameFilter[] filter = new FilenameFilter[imageTypes.length];

    int i = 0;
    for (final String type : imageTypes) {
        filter[i] = new FilenameFilter() {
            public boolean accept(File dir, String name) {
                return name.endsWith("." + type);
            }
        };
        i++;
    }

    FileUtils fileUtils = new FileUtils();
    File[] allMatchingFiles = fileUtils.listFilesAsArray(
            new File(SD_CARD_ROOT), filter, -1);
    for (File f : allMatchingFiles) {
        tFileList.add(f.getAbsolutePath());
    }
    return tFileList;
}

in Resource Array for Image types:

bmp
cmx
cod
gif
ico
ief
jpe
jpeg
jpg
jfif
pbm
pgm
png
pnm
ppm
ras
rgb
svg
tif
tiff
xbm
xpm
xwd

Hope this will help you to find images.

Here is missing class

public class FileUtils {

        public void saveArray(String filename, List output_field) {
             try {
                FileOutputStream fos = new FileOutputStream(filename);
                GZIPOutputStream gzos = new GZIPOutputStream(fos);
                ObjectOutputStream out = new ObjectOutputStream(gzos);
                out.writeObject(output_field);
                out.flush();
                out.close();
             }
             catch (IOException e) {
                 e.getStackTrace(); 
             }
          }

          @SuppressWarnings("unchecked")
        public List loadArray(String filename) {
              try {
                FileInputStream fis = new FileInputStream(filename);
                GZIPInputStream gzis = new GZIPInputStream(fis);
                ObjectInputStream in = new ObjectInputStream(gzis);
                List read_field = (List)in.readObject();
                in.close();
                return read_field;
              }
              catch (Exception e) {
                  e.getStackTrace();
              }
              return null;
          }

        public File[] listFilesAsArray(File directory, FilenameFilter[] filter,
                int recurse) {
            Collection files = listFiles(directory, filter, recurse);

            File[] arr = new File[files.size()];
            return files.toArray(arr);
        }

        public Collection listFiles(File directory,
                FilenameFilter[] filter, int recurse) {

            Vector files = new Vector();

            File[] entries = directory.listFiles();

            if (entries != null) {
                for (File entry : entries) {
                    for (FilenameFilter filefilter : filter) {
                        if (filter == null
                                || filefilter
                                        .accept(directory, entry.getName())) {
                            files.add(entry);
                            Log.v("ImageViewFlipper", "Added: "
                                    + entry.getName());
                        }
                    }
                    if ((recurse <= -1) || (recurse > 0 && entry.isDirectory())) {
                        recurse--;
                        files.addAll(listFiles(entry, filter, recurse));
                        recurse++;
                    }
                }
            }
            return files;
        }
    }