Android获取系统年月日时分秒

//获取当前时间2
Calendar c = Calendar.getInstance();
String year = c.get(Calendar.YEAR)+"";
String month = c.get(Calendar.MONTH)+"";
String day = c.get(Calendar.DAY_OF_MONTH)+"";
String hour = c.get(Calendar.HOUR_OF_DAY)+"";
String minute = c.get(Calendar.MINUTE)+"";
String second = c.get(Calendar.SECOND)+"";
currTimeStr = year+"-"+month+"-"+day+" "+hour+":"+minute+":"+second;

效果：