mIconDir = new File(dir + "/icons_" + mChannelGroup);
if (!mIconDir.exists()) {
mIconDir.mkdirs();
}
mIconIndexFile = new File(mIconDir, "index.txt");
mProperties = new ChangeTrackingProperties();
if (mIconIndexFile.exists()) {
BufferedInputStream in = new BufferedInputStream(new FileInputStream(
mIconIndexFile), 0x1000);
mProperties.load(in);
in.close();