android - 时间戳到字符串日期

Question

我不知道如何将时间戳转换为日期。我有：

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    TextView czas = (TextView)findViewById(R.id.textView1);
    String S = "1350574775";
    czas.setText(getDate(S));        
}



private String getDate(String timeStampStr){
   try{
       DateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
       Date netDate = (new Date(Long.parseLong(timeStampStr)));
       return sdf.format(netDate);
   } catch (Exception ignored) {
    return "xx";
   }
} 

答案是：01/16/1970，但这是错误的。

Answer 1

如果您坚持以秒为单位的“1350574775”格式，请尝试以下操作：

private void onCreate(Bundle bundle){
    ....
    String S = "1350574775";

    //convert unix epoch timestamp (seconds) to milliseconds
    long timestamp = Long.parseLong(s) * 1000L; 
    czas.setText(getDate(timestamp ));  
}



private String getDate(long timeStamp){

    try{
        SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
        Date netDate = (new Date(timeStamp));
        return sdf.format(netDate);
    }
    catch(Exception ex){
        return "xx";
    }
} 

Answer 2

String S = "1350574775";

您以秒为单位发送时间戳，而不是毫秒。

而是这样做：

String S = "1350574775000";

或者，在您的getDate方法中，乘以1000L：

new Date(Long.parseLong(timeStampStr) * 1000L)

Answer 3

 public static String getTime(long timeStamp){
    try{
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(timeStamp * 1000);
        SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy hh:mm:ss a");
        Date date = (Date) calendar.getTime();
        return sdf.format(date);
    }catch (Exception e) {
    }
    return "";
}