从 String 设置 DatePickerDialog 中的日期

Question

如何从字符串中设置 DatePicker 中的日期（例如：02/10/19）：

以下是代码：

  iqp_editDate.setOnClickListener(new View.OnClickListener() {

        @Override

        public void onClick(View v) {

            new DatePickerDialog(ActivityClass.this, (DatePickerDialog.OnDateSetListener) date1, y, m, d).show();

        }

    });

 DatePickerDialog.OnDateSetListener date1 = new DatePickerDialog.OnDateSetListener() {

    @Override

    public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {      

        y = year;

        m = month;

        d = dayOfMonth;

        dateMonth = month + 1;

        dateYear = year;

    }

};

Answer 1

更新：误解了问题：Calendar cal = Calendar.getInstance()cal.set(Calendar.HOUR_OF_DAY,18);cal.set(Calendar.MINUTE,0);cal.set(Calendar.DATE,2);cal.set(Calendar.MONTH,9); //Month -1//Or to set it from a String:String string = "02/10/19";DateFormat format = new SimpleDateFormat("dd/MM/yy", Locale.getDefault());Date date = format.parse(string);cal.setTimeInMillis(date.getTime());new DatePickerDialog(getContext(),date1, cal                                     .get(Calendar.YEAR), cal .get(Calendar.MONTH),                                    cal .get(Calendar.DAY_OF_MONTH)).show();

Answer 2

字符串是一个字符数组。这意味着您可以创建一个循环并将不同的日、月和年值设置为字符串的不同部分。String date = "02/19/19";String year = "";for(int i = 0; i < date.length; i++){&nbsp; month += date.charAt(i);&nbsp; ...}然后，当它遇到“/”时，你会告诉它何时从添加月份切换到添加日期到年份if(date.charAt(i) == '/'){&nbsp; ...}在这一切的最后，如果你需要将它变成一个 int 那么int month = Integer.parseInt("month");抱歉，我要去某个地方，所以我不能只为你写出代码，但我相信你可以从我给你的内容中找出答案。

Answer 3

以下代码对我来说效果很好：new DatePickerDialog(Activityclass.this, date1, cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH)).show();DatePickerDialog.OnDateSetListener date1 = new DatePickerDialog.OnDateSetListener() {&nbsp; &nbsp; @Override&nbsp; &nbsp; public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {&nbsp; &nbsp; &nbsp; &nbsp; view.setMinDate(1559327400);&nbsp; &nbsp; &nbsp; &nbsp; y = year;&nbsp; &nbsp; &nbsp; &nbsp; m = month;&nbsp; &nbsp; &nbsp; &nbsp; d = dayOfMonth;&nbsp; &nbsp; &nbsp; &nbsp; dateMonth = month + 1;&nbsp; &nbsp; &nbsp; &nbsp; dateYear = year;&nbsp; &nbsp; &nbsp; &nbsp; iqp_editDate.setText(dayOfMonth + "/" + (month + 1) + "/" + year);&nbsp; &nbsp; &nbsp; &nbsp; try {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; epoch = new java.text.SimpleDateFormat("MM/dd/yyyy").parse(m + "/" + dayOfMonth + "/" + year).getTime() / 1000;&nbsp; &nbsp; &nbsp; &nbsp; } catch (ParseException e) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.printStackTrace();&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; }};