지나간 일자의 log directory 지우기 refer to KeepItSilent.apk DeleteOld.javapackage better.life.maze2pdf;import android.util.Log;import java.io.File;import java.text.Collator;import java.text.SimpleDateFormat;import java.util.Locale;public class DeleteOld { final String FORMAT_DATE = "yy-MM-dd";public DeleteOld(String downloadFolder, String folder, Strine prefix, long backTime) { final SimpleDat..