android - 24 小时格式到 12 小时格式

Question

我在将 24 小时格式转换为 12 小时格式时遇到问题。这是我的代码。

    private TimePickerDialog.OnTimeSetListener mTimeSetListener =
        new TimePickerDialog.OnTimeSetListener() {

            @Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                // TODO Auto-generated method stub
                ViewGroup vg=(ViewGroup) view.getChildAt(0);
                hour = hourOfDay;
                minutes = minute;
                String am_pm = (hourOfDay < 12) ? "AM" : "PM";
                SimpleDateFormat sdf = new SimpleDateFormat("hh:mm a",Locale.US);
                String tme = hour +":"+ minutes+am_pm;
                et1.setText(tme);
            }
        };

我从警报对话框转到时间选择器对话框，因为我不知道如何将 24 小时格式更改为 12 小时格式

et1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                new TimePickerDialog(MainActivity.this, mTimeSetListener, hour, minutes, false).show();
            }
        });

    }  

这证明我已经将 bool 印象变为假。

Answer 1

试试这个-

private TimePickerDialog.OnTimeSetListener mTimeSetListener =
new TimePickerDialog.OnTimeSetListener() {

    @Override
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        // TODO Auto-generated method stub
        hour = hourOfDay;
        minutes = minute;
        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();
        et1.setText(aTime);
    }
};