android - 单击 EditText 的 TimePicker 对话框

Question

我已经有了一个 DatePicker，当用户点击 EditText 字段时会弹出它

eReminderDate.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                //To show current date in the datepicker
                Calendar mcurrentDate = Calendar.getInstance();
                int mYear = mcurrentDate.get(Calendar.YEAR);
                int mMonth = mcurrentDate.get(Calendar.MONTH);
                int mDay = mcurrentDate.get(Calendar.DAY_OF_MONTH);

                DatePickerDialog mDatePicker;
                mDatePicker = new DatePickerDialog(AddReminder.this, new OnDateSetListener() {
                    public void onDateSet(DatePicker datepicker, int selectedyear, int selectedmonth, int selectedday) {
                        // TODO Auto-generated method stub
                    /*      Your code   to get date and time    */
                        selectedmonth = selectedmonth + 1;
                        eReminderDate.setText("" + selectedday + "/" + selectedmonth + "/" + selectedyear);
                    }
                }, mYear, mMonth, mDay);
                mDatePicker.setTitle("Select Date");
                mDatePicker.show();
            }
        });

我尝试以类似的方式执行 TimePicker，但无法使其正常工作。这是我让它工作的尝试

 eReminderTime.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Calendar mcurrentTime = Calendar.getInstance();
                int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
                int minute = mcurrentTime.get(Calendar.MINUTE);
                TimePickerDialog mTimePicker;
                mTimePicker = new TimePickerDialog(AddReminder.this, new TimePickerDialog.OnTimeSetListener() {
                    @Override
                    public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                        eReminderTime.setText( ""selectedHour + ":" + selectedMinute);
                    }
                }, hour, minute);
                mTimePicker.setTitle("Select Time");
                mTimePicker.show();

            }
        });

难道不能像我为 DatePicker 那样做吗？

我什至尝试过在使用此代码单击 EditText 字段后弹出 TimePicker。

      eReminderTime.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            showDialog(TIME_DIALOG_ID);
        }
    });

由于某种原因，当我将其输入 Android Studio 时，“showDialog”被计分了。

谁能告诉我哪里出错了？还是我只需要使用自定义 DialogFragment？

Answer 1

eReminderTime.setText( "" + selectedHour + ":" + selectedMinute);

您在 "" 和选定的小时之间缺少一个 +，setText 方法仅采用单个字符串，因此您需要连接所有部分(可能不需要第一个引号)。

eReminderTime.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            Calendar mcurrentTime = Calendar.getInstance();
            int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
            int minute = mcurrentTime.get(Calendar.MINUTE);
            TimePickerDialog mTimePicker;
            mTimePicker = new TimePickerDialog(AddReminder.this, new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                    eReminderTime.setText( selectedHour + ":" + selectedMinute);
                }
            }, hour, minute, true);//Yes 24 hour time
            mTimePicker.setTitle("Select Time");
            mTimePicker.show();

        }
    });

这应该可以解决您的第二个错误，因为您没有提供最后一个参数。 TimePickerDialog Constructors