SetText和TimePickerDialog

Question

我似乎不知道在onTimeSet()方法中放置什么，以便将setText放到与其关联的按钮中。

我希望用户点击布局中的按钮，然后显示TimePickerDialog。一旦用户选择了他们想要使用的时间，我希望时间设置为相同的按钮文本。

有什么想法吗？

public class TimePickerFragment extends DialogFragment implements
    TimePickerDialog.OnTimeSetListener {

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the current time as the default values for the picker
    final Calendar c = Calendar.getInstance();
    int hour = c.get(Calendar.HOUR_OF_DAY);
    int minute = c.get(Calendar.MINUTE);

    // Create a new instance of TimePickerDialog and return it
    return new TimePickerDialog(getActivity(), this, hour, minute,
            DateFormat.is24HourFormat(getActivity()));
}

public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    // Do something with the time chosen by the user


}

}

Answer 1

是的，把数据从片段传回给包含的活动有点复杂。

基本上，您有两个选项，一个简单且向前倾斜，另一个更复杂，但从长远来看(对于更复杂的需求)将是更好的选择：

简单

public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    String timeString = hourOfDay+" "+minute; // <-- just for example, you'll want to do better time-formatting here.
    Button b = (Button)getActivity().findViewById(R.id.yourButtonsId);
    b.setText(timeString);
}

精密

在片段中使用侦听器接口，并使活动实现该接口，并将自身设置为片段的侦听器：

将此添加到您的片段中：

public interface Listener {
    public void setTime(int hourOfDay, int minute);
}

// hold the listener
private Listener mListener;

// used by Activity to set itself as the listener for the fragment
public void setListener(Listener listener) {
    mListener = listener;
}

在片段中实现onTimeSet，如下所示：

public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    if (mListener != null) mListener.setTime(hourOfDay, minute);
}

将implements TimePickerFragment.Listener添加到活动的类声明中。

在活动中实现侦听器的public void setTime(int hourOfDay, int minute)方法，例如：

public void setTime(int hourOfDay, int minute) {
    String timeString = hourOfDay+" "+minute; // <-- just for example, you'll want to do better time-formatting here.
    Button b = (Button)findViewById(R.id.yourButtonsId);
    b.setText(timeString);
}

实例化片段后，将其添加到活动中：

timePickerFragment.setListener(this);

Answer 2

   // button click listener
   button.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            if(button.getText().toString().trim().length()>0){
                getTimeDialog(button.getText().toString(), new CustomClickListner() {

                   @Override
                    public void onClick(String value) {
                    btnLogin.setText(value);
                    }
                });
            }else{
                getTimeDialog("", new CustomClickListner() {

                   @Override
                    public void onClick(String value) {
                    btnLogin.setText(value);
                    }
                });
            }
    }
});


     // custom interface time dialog set time listener
     public interface CustomClickListner {
      public void onClick(String value);
    }

     // open time dialog
     public void getTimeDialog(final String strTime, final CustomClickListner target) {

    Calendar date = getTimeFromString(strTime);
    TimePickerDialog timeDialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {

        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            Calendar date = Calendar.getInstance();
            date.set(Calendar.HOUR_OF_DAY, hourOfDay);
            date.set(Calendar.MINUTE, minute);
            String dateString = new SimpleDateFormat("kk:mm:ss").format(date);
            target.onClick(dateString);
        }
    }, date.get(Calendar.HOUR), date.get(Calendar.MINUTE), true);

    timeDialog.show();

}

Answer 3

只需使用以下步骤

 private void SetTime() {
        buttonTaskTime.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String taskTime = buttonTaskTime.getText().toString();
                int mHour = Integer.parseInt(taskTime.split(":")[0]);
                String minutesmeridian = taskTime.split(":")[1];
                int mMinute = Integer.parseInt(minutesmeridian.split(" ")[0]);
                String mMeridian = minutesmeridian.split(" ")[1];
                if (mMeridian.equals(postMeridain)) {
                    if (!(mHour == 12)) {
                        mHour += 12;
                    }

                } else {
                    if (mHour == 12) {
                        mHour += 12;
                    }
                }
                hour = mHour;
                minute = mMinute;
                new TimePickerDialog(getActivity(), R.style.Theme_CustomDialog,
                        timePicker, hour, minute, false).show();
            }
        });
    }
TimePickerDialog.OnTimeSetListener timePicker = new TimePickerDialog.OnTimeSetListener() {

        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minutes) {
            hour = hourOfDay;
            minute = minutes;
            calendarNewTaskTime.set(Calendar.HOUR_OF_DAY, hourOfDay);
            calendarNewTaskTime.set(Calendar.MINUTE, minutes);
            calendarNewTaskTime.set(Calendar.SECOND, 0);
            UpdateTime();
        }
    };

private void UpdateTime() {
        String meridian = " ";
        if (hour > 12) {
            hour -= 12;
            meridian = "PM";
        } else if (hour == 0) {
            hour = 12;
            meridian = "AM";
        } else if (hour == 12)
            meridian = "PM";
        else
            meridian = "AM";
        String min = " ";
        if (minute < 10) {
            min = "0" + minute;
        } else
            min = String.valueOf(minute);
        buttonTaskTime.setText(hour + ":" + min + " " + meridian);
    }