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BackPressCloseHandler.javapublic class BackPressCloseHandler { private long backKeyPressedTime = 0; private Toast toast; private Activity activity; public BackPressCloseHandler(Activity context) { this.activity = context; } public void onBackPressed() { if (System.currentTimeMillis() > backKeyPressedTime + 1000) { backKeyPressedTime = System.currentTimeMillis(); showGuide(); return; } if (System..

Time 클래스가 deprecated 되어서 현재는 GregorianCalendar 클래스를 사용 val tz = TimeZone.getTimeZone("Asia/Seoul")val gc = GregorianCalendar(tz)var year = gc.get(GregorianCalendar.YEAR).toString()var month = gc.get(GregorianCalendar.MONTH).toString()var day = gc.get(GregorianCalendar.DATE).toString()var hour= gc.get(GregorianCalendar.HOUR).toString()var min = gc.get(GregorianCalendar.MINUTE).toString()var sec =..