1

我在网上搜索了一个有用的代码，它可以像这样处理和管理 TimePickerDialog

http://androidexample.com/Time_Picker_With_AM_PM_Values_-_Android_Example/index.php?view=article_discription&aid=86&aaid=109

我确实尝试过它并且它有效但是当我将它集成到我的延伸到片段的类中时，TimePickerDialog 没有在按钮单击时显示

你知道我该如何实现这个吗？

public class First_Activity extends Fragment implements ActionBar.TabListener {   
 static final int TIME_DIALOG_ID = 1111;
    public Button btnClick;
    TextView STtime;
    int hour,minute; 

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


STtime = (TextView) getActivity().findViewById(R.id.textView2);


        /********* display current time on screen Start ********/

           final Calendar c = Calendar.getInstance();
           // Current Hour
           hour = c.get(Calendar.HOUR_OF_DAY);
           // Current Minute
           minute = c.get(Calendar.MINUTE);

           // set current time into output textview
           updateTime(hour, minute);

        /********* display current time on screen End ********/

btnClick = (Button) getActivity().findViewById(R.id.button4);
        btnClick.setOnClickListener(new OnClickListener() {

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

            }
        });
}

 protected Dialog onCreateDialog(int id) {
           switch (id) {
           case TIME_DIALOG_ID:

               // set time picker as current time
               return new TimePickerDialog(getActivity(), timePickerListener, hour, minute,
                       false);

           }
           return null;
       }

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


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

               updateTime(hour,minute);

            }

       };



private static String utilTime(int value) {

           if (value < 10)
               return "0" + String.valueOf(value);
           else
               return String.valueOf(value);
       }

 private void updateTime(int hours, int mins) {

       String timeSet = "";
       if (hours > 12) {
           hours -= 12;
           timeSet = "PM";
       } else if (hours == 0) {
           hours += 12;
           timeSet = "AM";
       } else if (hours == 12)
           timeSet = "PM";
       else
           timeSet = "AM";


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

       // Append in a StringBuilder
        String aTime = new StringBuilder().append(hours).append(':')
               .append(minutes).append(" ").append(timeSet).toString();

         STtime.setText(aTime);
   }    
}
4

1 回答 1

1

我建议您为您的 Frament 创建一个布局文件，如下所示：

your_custom_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent" 
              android:layout_height="fill_parent" 
              android:orientation="vertical" >
    <Button android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Spawn Dialog" />
</LinearLayout>

和一个看起来像这样的自定义片段：

public class MyFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.your_custom_layout, container, false);

        Button b = (Button) v.findViewById(R.id.button);
        b.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                createDialog(YOUR_ID).show();
            }
        });

        return v;
    }

    public Dialog createDialog(int id) {
           switch (id) {
           case TIME_DIALOG_ID:

               // set time picker as current time
               return new TimePickerDialog(getActivity(), timePickerListener, hour, minute, false);

           }
           return null;
       }
}

因此，您有一个包含按钮的布局的片段，当单击该按钮时，会生成对话框。

于 2013-08-24T13:15:57.627 回答