1

我在 listview 中有一个按钮，它是从 arrayadpater 类填充的。我已经设法通过使用 showdialog 来单击按钮以显示日期选择器。但是现在我希望日期选择器中的日期显示在同一个按钮上。问题是该 datesetlistener 在活动文件中，我如何使用它在 arrayadapter 类中的按钮上显示日期。？请帮忙！！

LessonDetailsActivity.java

private Button pPickDate;
private int pYear;
private int pMonth;
private int pDay;
/**
 * This integer will uniquely define the dialog to be used for displaying
 * date picker.
 */
static final int DATE_DIALOG_ID = 0;

/**
 * Callback received when the user "picks" a date in the dialog private
 * DatePickerDialog.OnDateSetListener pDateSetListener = new
 * DatePickerDialog.OnDateSetListener() {
 * 
 * public void onDateSet(DatePicker view, int year, int monthOfYear, int
 * dayOfMonth) { pYear = year; pMonth = monthOfYear; pDay = dayOfMonth;
 * updateDisplay(); //displayToast(); } };
 */

DatePickerDialog.OnDateSetListener dateListener = new DatePickerDialog.OnDateSetListener() {

    @Override
    public void onDateSet(DatePicker view, int yr, int monthOfYear,
            int dayOfMonth) {
        // TODO Auto-generated method stub
        pYear = yr;
        pMonth = monthOfYear;
        pDay = dayOfMonth;
        Log.d("Date",
                String.valueOf(new StringBuilder()
                        // Month is 0 based so add 1
                        .append(pMonth + 1).append("/").append(pDay)
                        .append("/").append(pYear).append(" ")));

    }

};

/** Updates the date in the TextView */
private void updateDisplay() {
    pPickDate.setText(new StringBuilder()
            // Month is 0 based so add 1
            .append(pMonth + 1).append("/").append(pDay).append("/")
            .append(pYear).append(" "));
}

// public static final String[] lessonTitles = new String[] {
// "Intro to fine wood working", "Your Workplace tools and materials" };

// public static final String[] lessonIds = { "5", "6" };

// public static final int[] progressValues = { 100, 100 };

// public static final String[] lessonGrades = { "80", "78"};

// public static final String[] lessonRetakeGrades = { "0", "0" };

// public static final String[] planExamDates = new String[] {
// "00/00/0000","00/00/0000" };

// public static final String[] actualExamDates = new String[] {
// "00/00/0000","00/00/0000" };

// public static final String[] retakePlanExamDates = new String[] {
// "00/00/0000","00/00/0000" };

// public static final String[] retakeActualExamDates = new String[] {
// "00/00/0000","00/00/0000" };

ListView listView;
List<LessonRowItem> rowItems;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.my_lesson_listview);

    savedInstanceState = this.getIntent().getExtras();
    TextView textViewCourseTitle = (TextView) findViewById(R.id.label_course_title);
    textViewCourseTitle.setText((String) savedInstanceState
            .get("course_title"));

    String courseId = (String) savedInstanceState.get("course_id");
    DataBaseHandler db = new DataBaseHandler(this);
    List<Lesson> lessonList = db.getLessonDetails(courseId);
    int size = lessonList.size();

    final String[] lessonTitles = new String[size];
    final String[] lessonIds = new String[size];
    final int[] progressValues = new int[size];
    final String[] lessonGrades = new String[size];
    final String[] lessonRetakeGrades = new String[size];
    final String[] planExamDates = new String[size];
    final String[] actualExamDates = new String[size];
    final String[] retakePlanExamDates = new String[size];
    final String[] retakeActualExamDates = new String[size];

    int j = 0;
    for (Lesson lesson : lessonList) {

        lessonTitles[j] = lesson.getLessonTitle();
        lessonIds[j] = lesson.getLessonId();

        if ("0".equals(lesson.getCompleted())) {
            progressValues[j] = 0;
        } else {
            progressValues[j] = 100;
        }

        lessonGrades[j] = lesson.getGrade();
        lessonRetakeGrades[j] = lesson.getRetakeGrade();
        planExamDates[j] = lesson.getPlanExamDate();
        actualExamDates[j] = lesson.getActualExamDate();
        retakePlanExamDates[j] = lesson.getRetakePlanExamDate();
        retakeActualExamDates[j] = lesson.getRetakeActualExamDate();
        j++;

    }

    rowItems = new ArrayList<LessonRowItem>();

    for (int i = 0; i < lessonGrades.length; i++) {
        LessonRowItem item = new LessonRowItem(lessonTitles[i],
                lessonIds[i], progressValues[i], lessonGrades[i],
                lessonRetakeGrades[i], planExamDates[i],
                actualExamDates[i], retakePlanExamDates[i],
                retakeActualExamDates[i]);
        rowItems.add(item);

    }

    listView = (ListView) findViewById(R.id.my_lesson_list);
    LessonListViewAdapter adapter = new LessonListViewAdapter(this,
            R.layout.my_lesson_list_item, rowItems);
    listView.setAdapter(adapter);

    pPickDate = (Button) findViewById(R.id.label_lesson_plan_exam_date_value);
    // pPickDate.setOnClickListener((OnClickListener) this);
    /**
     * Listener for click event of the button
     * pPickDate.setOnClickListener(new View.OnClickListener() { public void
     * onClick(View v) { showDialog(DATE_DIALOG_ID); } });
     */

    /** Get the current date */
    final Calendar cal = Calendar.getInstance();
    pYear = cal.get(Calendar.YEAR);
    pMonth = cal.get(Calendar.MONTH);
    pDay = cal.get(Calendar.DAY_OF_MONTH);

    /** Display the current date in the TextView */
    updateDisplay();
}

/**
 * Create a new dialog for date picker
 * 
 * @Override protected Dialog onCreateDialog(int id) { switch (id) { case
 *           DATE_DIALOG_ID: return new DatePickerDialog(this,
 *           pDateSetListener, pYear, pMonth, pDay); } return null; }
 */

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

        return new DatePickerDialog(LessonDetailsActivity.this,
                dateListener, pYear, pMonth, pDay);

    }
    return null;

}
}

LessonListArrayAdapter.java

 public class LessonListViewAdapter extends ArrayAdapter<LessonRowItem> {

Context context;
static final int DATE_DIALOG_ID = 0;

public LessonListViewAdapter(Context context, int resourceId,
        List<LessonRowItem> items) {
    super(context, resourceId, items);
    this.context = context;

}

public long getItemId(int position) {
    return position;
}

@Override
public int getPosition(LessonRowItem item) {
    // TODO Auto-generated method stub
    return super.getPosition(item);
}

public static int getDateDialogId() {
    return DATE_DIALOG_ID;
}

/* private view holder class */
private class ViewHolder {
    TextView textviewLessonTitle;
    TextView textviewLessonId;
    ProgressBar progressBarLessonLevel;
    TextView textviewLessonGrade;
    TextView textviewLessonRetakeGrade;
    TextView textviewPlanExamDate;
    TextView textviewActualExamDate;
    TextView textviewRetakePlanExamDate;
    TextView textviewRetakeActualExamDate;

}

public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder = new ViewHolder();
    LessonRowItem rowItem = getItem(position);

    LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.my_lesson_list_item, null);

        holder.textviewLessonTitle = (TextView) convertView
                .findViewById(R.id.label_lesson_title);
        holder.textviewLessonId = (TextView) convertView
                .findViewById(R.id.label_lesson_id_value);
        holder.progressBarLessonLevel = (ProgressBar) convertView
                .findViewById(R.id.progressbar_lesson_level);
        holder.textviewLessonGrade = (TextView) convertView
                .findViewById(R.id.label_lesson_grade_value);
        holder.textviewLessonRetakeGrade = (TextView) convertView
                .findViewById(R.id.label_lesson_retake_grade_value);
        holder.textviewPlanExamDate = (TextView) convertView
                .findViewById(R.id.label_lesson_plan_exam_date_value);
        holder.textviewActualExamDate = (TextView) convertView
                .findViewById(R.id.label_lesson_actual_exam_date_value);
        holder.textviewRetakePlanExamDate = (TextView) convertView
                .findViewById(R.id.label_lesson_retake_plan_exam_date_value);
        holder.textviewRetakeActualExamDate = (TextView) convertView
                .findViewById(R.id.label_lesson_retake_actual_exam_date_value);

        convertView.setTag(holder);
    } else

        holder = (ViewHolder) convertView.getTag();

    holder.textviewLessonTitle.setText(rowItem.getLessonTitle());
    holder.textviewLessonId.setText(rowItem.getLessonId());
    holder.progressBarLessonLevel.setProgress(rowItem.getLessonProgress());
    holder.textviewLessonGrade.setText(rowItem.getLessonGrade());
    holder.textviewLessonRetakeGrade
            .setText(rowItem.getRetakeLessonGrade());
    holder.textviewPlanExamDate.setText(rowItem.getPlanExamDate());
    holder.textviewActualExamDate.setText(rowItem.getActualExamDate());
    holder.textviewRetakePlanExamDate.setText(rowItem
            .getRetakePlanExamDate());
    holder.textviewRetakeActualExamDate.setText(rowItem
            .getRetakeActualExamDate());

    holder.textviewPlanExamDate
            .setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    Log.d("Date Picker", "Shown");
                    ((Activity) LessonListViewAdapter.this.context)
                            .showDialog(DATE_DIALOG_ID);

                }
            });

    holder.textviewPlanExamDate.setText(String.valueOf(new StringBuilder()
            // Month is 0 based so add 1
            .append("77").append("/").append("77").append("/").append("77")
            .append(" ")));

    /*
     * holder.textviewCousreTitle.setText(rowItem.getCourseTitle());
     * holder.progressBarModuleLevel
     * .setProgress((rowItem.getTotalCompleteLesson() * 100) /
     * rowItem.getTotalLesson());
     * holder.textviewModuleStatus.setText(rowItem.getTotalCompleteLesson()
     * + "/" + rowItem.getTotalLesson() + " lessons");
     * holder.textviewModuleAverage.setText(rowItem.getModuleAverage() +
     * ""); holder.textviewStartDate.setText(rowItem.getStartDate());
     * holder.textviewEndDate.setText(rowItem.getEndDate());
     */

    return convertView;
}

}
4

3 回答 3

2

您已经在使用自定义数组适配器，因此不需要做太多其他事情。您需要做的是在您的适配器中设置一个方法来存储您要在其中使用的日期字符串。然后你就可以在监听器中执行你的操作了。例如：

在你的听众中：

DatePickerDialog.OnDateSetListener dateListener = new DatePickerDialog.OnDateSetListener() {

    @Override
    public void onDateSet(DatePicker view, int yr, int monthOfYear,
            int dayOfMonth) {

        ...


        String dateSet = String.valueOf(monthOfYear + 1) + "/"
                + String.valueOf(dayOfMonth) + "/"
                + String.valueOf(yr) + " ";

        adapter.setDateSet(dateSet);
    }
};

然后在您的适配器中：

public class LessonListViewAdapter extends ArrayAdapter<LessonRowItem> {

    Context context;
    static final int DATE_DIALOG_ID = 0;
    String dateSet;

    public void setDateSet(String dateSet) {
        this.dateSet = dateSet;
    }

        ...

现在您有机会在您想到的数组适配器中的按钮上设置字符串，注意字符串为空时的情况。有关此类内容的更多信息，请查看此链接

编辑：

private Button pPickDate;
private int pYear;
private int pMonth;
private int pDay;
private LessonListViewAdapter adapter; // <-- add this

改变这个：

LessonListViewAdapter adapter = new LessonListViewAdapter(this,
                R.layout.my_lesson_list_item, rowItems);

到：

    adapter = new LessonListViewAdapter(this,
            R.layout.my_lesson_list_item, rowItems);
于 2012-11-28T08:41:21.197 回答
0

可以直接调用datepicker

new DatePickerDialog(context, pickerListener, year, month,
                                day).show();

private DatePickerDialog.OnDateSetListener pickerListener = new DatePickerDialog.OnDateSetListener() {

        // when dialog box is closed, below method will be called.
        @Override
        public void onDateSet(DatePicker view, int selectedYear,
                              int selectedMonth, int selectedDay) {
            year = selectedYear;
            month = selectedMonth;
            day = selectedDay;    
            Log.d("@DatePickerDialog","Time:"+year);    
            date_dialog.setText(day + "-" + (month + 1) + "-" + year);    
        }    
    };
于 2015-05-05T13:28:26.123 回答
0

可以帮助某人，我在 Recyclerview Adapterclass 中使用了这个

 Calendar mcurrentTime = Calendar.getInstance();
        int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
        int minute = mcurrentTime.get(Calendar.MINUTE);

        TimePickerDialog mTimePicker;
        mTimePicker = new TimePickerDialog(CurrentActivity.this, new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                textview.setText( selectedHour + ":" + selectedMinute);//your view here
            }
        }, hour, minute, true);
        mTimePicker.setTitle("Select Time");
        mTimePicker.show();

我用这个如下

holder.othrs.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            /*DialogFragment newFragment = new TimePickerFragment();
            newFragment.show(((Dashboard2)context).getSupportFragmentManager(), "timePicker");*/

           // Calendar mcurrentTime = Calendar.getInstance();
            //int hour = mcurrentTime.get(Calendar.HOUR_OF_DAY);
            //int minute = mcurrentTime.get(Calendar.MINUTE);

            TimePickerDialog mTimePicker;
            mTimePicker = new TimePickerDialog(context, new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker timePicker, int selectedHour, int selectedMinute) {
                    holder.time.setVisibility(View.VISIBLE);
                    holder.time.setText( selectedHour + ":" + selectedMinute);
                }
            }, 0, 0, true);
            mTimePicker.setTitle("Over Time in (Hrs:Mins)");
            mTimePicker.show();
        }

    });
于 2018-01-10T12:12:08.480 回答