从时间字符串中获取小时和分钟

Question

我只想从 TimePicker 获取小时和时间，我将其存储为字符串值。用户最初单击将打开 TimePickerDialog 的 editText。请在下面找到代码

initialTimeEditText.setOnClickListener(this);

public void onClick(View view) {
    int mYear;
    int mMonth;
    int mDay;
 if (view == initialTimeEditText) {
            final Calendar c = Calendar.getInstance();
            int mHour = c.get(Calendar.HOUR_OF_DAY);
            int mMinute = c.get(Calendar.MINUTE);

            // Launch Time Picker Dialog
            TimePickerDialog timePickerDialog = new TimePickerDialog(this,
                    new TimePickerDialog.OnTimeSetListener() {

                        @Override
                        public void onTimeSet(TimePicker view, int hourOfDay,
                                              int minute) {
                            String hourString;
                            if (hourOfDay < 10)
                                hourString = "0" + hourOfDay;
                            else
                                hourString = "" + hourOfDay;

                            String am_pm = (hourOfDay < 12) ? "AM" : "PM";

                            String minuteSting;
                            if (minute < 10)
                                minuteSting = "0" + minute;
                            else
                                minuteSting = "" + minute;
                            initialTimeEditText.setText(hourString + ":" + minuteSting + " " + am_pm);
                        }
                    }, mHour, mMinute, false);
            timePickerDialog.show();
        }

我有这个名为 initialTimeEditText 的 editText，当我用户单击 editText 时，我创建了一个 TimePickerDialog。当我将值存储到数据库中时，我将它存储为一个字符串。您可以在代码中看到我将 EditText 作为字符串值设置为文本。这就是我将其存储在 Firebase 数据库中的方式

String initialTime = initialTimeEditText.getText().toString().trim();
medicationsMap.put("initialTime", initialTime);

我的问题是，我有这个值 initialTime，它是一个字符串，我想提取小时和分钟值并将其设置为日历实例，如

Calendar calendar = Calendar.getInstance(),
calendar.set(Calendar.HOUR_OF_DAY, timePickerDialog.getHour());

上面提到的代码是完全不同的方法。我只能访问 initialTime String 值。我可以从该字符串中获取小时和分钟值吗？

这能做到吗？如果是这样，有什么办法吗？请帮忙。

Answer 1

尝试

String[] timeArray = initialTime.split(":");
if(timeArray.length > 0) {
    int hours = Integer.parseInt(timeArray[0]);


    String[] array2 = timeArray[1].split(" ");

    int minutes = Integer.parseInt(array2[0]);

    String amPm = array2[1];

    Calendar calendar = Calendar.getInstance(),
    calendar.set(Calendar.HOUR_OF_DAY, hours);
    calendar.set(Calendar.MINUTE, minutes);
}

Answer 2

我只想从 TimePicker 获取小时和时间，我将其存储为字符串值。用户最初单击将打开 TimePickerDialog 的 editText。请在下面找到代码

我已经使用 Stringtokenizer 来分隔小时和分钟

StringTokenizer st = new StringTokenizer(holder.mTitle.getText().toString().trim(), ":");
while (st.hasMoreElements()) {
    String hourOfDay = st.nextElement().toString();
    String minute = st.nextElement().toString();
    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, Integer.parseInt(hourOfDay));
    calendar.set(Calendar.MINUTE, Integer.parseInt(minute));
    calendar.set(Calendar.SECOND, 0);
}

从时间字符串中获取小时和分钟

Get the hour and minute from the Time String

android

timepickerdialog