Android / Java 将 String 日期转换为 long 类型
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Android / Java convert String date to long type
提问by David Finder
I need to convert a string in the format "dd/mm/yyyy", to a long type. In order to pass the value to the calendarProvider in android.
我需要将格式为“dd/mm/yyyy”的字符串转换为长类型。为了将值传递给android中的calendarProvider。
Currently I have:
目前我有：
Calendar calendar = Calendar.getInstance();
long startEndDate = 0;
Calendar currentDateInfo = Calendar.getInstance();
currentDateInfo.set(calendar.get(Calendar.YEAR), calendar.SEPTEMBER, calendar.get(Calendar.DAY_OF_MONTH));
startEndDate = currentDateInfo.getTimeInMillis();
I need:
我需要：
long startDate = *Some sort of conversion* EditText.getText();
I've tried using SimpleDateFormat but i'm having problems getting the correct type back. Any help would be much appreciated.
我试过使用 SimpleDateFormat 但我在获取正确的类型时遇到问题。任何帮助将非常感激。
采纳答案by Ken Wolf
You can use the following code to get a long value (milliseconds since January 1, 1970, 00:00:00 GMT) from a String date with the format "dd/mm/yyyy".
您可以使用以下代码从格式为“dd/mm/yyyy”的字符串日期中获取长值（自 1970 年 1 月 1 日以来的毫秒数，格林威治标准时间 00:00:00）。
try {
String dateString = "30/09/2014";
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
Date date = sdf.parse(dateString);
long startDate = date.getTime();
} catch (ParseException e) {
e.printStackTrace();
}
回答by vinayak mishra
Use like this your code
像这样使用你的代码
String[] dateArray = dateString.split("-");
int year = Integer.parseInt(dateArray[0]);
int month = Integer.parseInt(dateArray[1]);
int date = Integer.parseInt(dateArray[2]);
GregorianCalendar gc = new GregorianCalendar(year,month,date);
long timeStamp = gc.getTimeInMillies();
