Question

我的设置屏幕上有时间选择器对话框。当用户点击时间选择器对话框出现并且用户选择时间时。但是当用户再次点击时间选择器时，时间选择器对话框显示当前时间而不是选定时间。这是我到目前为止所做的。

 mreminder.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Calendar mcurrentTime = Calendar.getInstance();
            final int[] hour = {mcurrentTime.get(Calendar.HOUR_OF_DAY)};
            int minute = mcurrentTime.get(Calendar.MINUTE);
            TimePickerDialog mTimePicker;
            mTimePicker = new TimePickerDialog(SettingsActivity.this, new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                    int hour = selectedHour;
                    int minutes = selectedMinute;
                    String timeSet = " ";
                    if (hour > 12) {
                        hour -= 12;
                        timeSet = "PM";
                    } else if (hour == 0) {
                        hour += 12;
                        timeSet = "AM";
                    } else if (hour == 12)
                        timeSet = "PM";
                    else
                        timeSet = "AM";

                    String min = "";
                    if (minutes < 10)
                        min = "0" + minutes;
                    else
                        min = String.valueOf(minutes);

                    // Append in a StringBuilder
                    String aTime = new StringBuilder().append(hour).append(':')
                            .append(min).append(" ").append(timeSet).toString();
                    mreminder.setText(aTime);
                    pref.savePref(REMINDER, aTime);
                }
            }, hour[0], minute, false);
            mTimePicker.setTitle("Select Time");
            mTimePicker.show();

        }
    });

有人可以告诉我如何在下次用户点击时将时间戳设置为所选时间。

Answer 1

将所选时间存储在sharedPreferences中，并在onClick事件中检查sharedPreference是否有某些内容。如果它有东西然后从那里加载数据你可以这样做：

int hours,mins;//global variables;    
mreminder.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        int h = Integer.parseInt(sharedPreference.getString("HOUR","0));
        int m = Integer.parseInt(sharedPreference.getString("MIN","0"));//"0" is the default value if nothing is stored;
        if(h>0){
               hours = h;
               mins = m;
        }else{
           Calendar mcurrentTime = Calendar.getInstance();
        hours = mcurrentTime.get(Calendar.HOUR_OF_DAY);
        mins = mcurrentTime.get(Calendar.MINUTE);
        }

        TimePickerDialog mTimePicker;
        mTimePicker = new TimePickerDialog(SettingsActivity.this, new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                int hour = selectedHour;
                int minutes = selectedMinute;
                String timeSet = " ";
                if (hour > 12) {
                    hour -= 12;
                    timeSet = "PM";
                } else if (hour == 0) {
                    hour += 12;
                    timeSet = "AM";
                } else if (hour == 12)
                    timeSet = "PM";
                else
                    timeSet = "AM";

                String min = "";
                if (minutes < 10)
                    min = "0" + minutes;
                else
                    min = String.valueOf(minutes);

                // Append in a StringBuilder
                String aTime = new StringBuilder().append(hour).append(':')
                        .append(min).append(" ").append(timeSet).toString();
                mreminder.setText(aTime);
                pref.savePref(REMINDER, aTime);
            }
        }, hours, mins, false);
        mTimePicker.setTitle("Select Time");
        mTimePicker.show();

    }
});

这将解决您的问题。

将时间选择器对话设置为所选时间

1 个答案: