从数据库中获取的日期显示错误

Question

我是android的新手，我被困在一个地方。我想从mysql数据库中获取日期并在android app中显示。

Android应用程序的代码

 try {
JSONArray data = response.getJSONArray("std");
String result[]=new String[data.length()];
for (int i = 0; i < data.length(); i++)
{
    JSONObject obj = data.getJSONObject(i);
    name = obj.getString("Name");
    fromdate=obj.getString("From");
    todate = obj.getString("To");
    DateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
    Calendar cal=Calendar.getInstance();
    Date fd=formatter.parse(fromdate);
   cal.setTime(fd);
   from1=cal.getTimeInMillis();
   Date td=formatter.parse(todate);
   cal.setTime(td);
   to1=cal.getTimeInMillis();              
   date= DateUtils.formatDateRange( Main2Activity.this, from1, to1,  
     DateUtils.FORMAT_SHOW_YEAR );
   result[i]=""+name+"\n"+date;
  }

JSON FILE

<?php
$result=mysqli_query($link,"select * from oTrip");
$data=array();
$rows=mysqli_num_rows($result);
while($rec=mysqli_fetch_assoc($result))
{
$data[]=$rec;
}
header('Content-Type: application/json');
echo json_encode(array("std" =>$data));
?>

输出

请帮忙！ 谢谢。

Answer 1

改变＆＃34; dd-MM-yyyy＆＃34;到＆＃34; dd / MM / yyyy＆＃34;

Answer 2

你可以这样做，

 fromdate=obj.getLong("From");
 SimpleDateFormat sdf = new SimpleDateFormat("HH:mm dd/MM/yyyy");
     sdf.format(new Date(fromdate));

Answer 3

使用此：

 JSONObject obj = data.getJSONObject(i);
 name = obj.getString("Name");
 fromdate=obj.getString("From");
 todate = obj.getString("To");
 DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
 Date fd=formatter.parse(fromdate);
 Date td=formatter.parse(todate);
 DateFormat newFormatter = new SimpleDateFormat("dd-MM-yyyy");
 String newFromdate = newFormatter.format(fd);
 String newTodate = newFormatter.format(td);
 date = newFromdate + " - " + newTodate;
 result[i]=""+name+"\n"+date;

您必须以给定的JSON格式解析日期，然后使用其他formatter将解析后的日期更改为新格式。

您可以使用单行：

DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
DateFormat newFormatter = new SimpleDateFormat("dd-MM-yyyy");
fromdate = newFormatter.format(formatter.parse(fromdate));
todate = newFormatter.format(formatter.parse(todate));