android - Android:Button クリックして datepicker を表示し、次に datepicker.Button から日付を表示します。ボタンは ArrayAdapter のすべてのリストビュー項目にあります

Question

arrayadpaterクラスからデータが取り込まれているリストビューにボタンがあります.showdialogを使用してボタンをクリックして日付ピッカーを表示することができました.しかし、今は日付ピッカーからの日付を同じボタンに表示したい.問題はそのdatesetlistenerはアクティビティファイルにあり、それを使用してarrayadapterクラスのボタンに日付を表示するにはどうすればよいですか? 助けてください！！

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;
}

}

score 2 · Accepted Answer

既にカスタムアレイアダプターを使用しているため、他に多くのことを行う必要はありません。あなたがする必要があるのは、アダプタでメソッドを設定して、使用したいこの日付文字列を格納することです。次に、リスナーでアクションを実行できます。例えば：

リスナーで:

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);
    }
};

次に、アダプターで：

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;
    }

        ...

これで、文字列が null の場合の条件に注意しながら、念頭に置いていた配列アダプターのボタンに文字列を設定する機会が得られました。この種のものの詳細については、このリンクをチェックしてください

編集：

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

これを変える：

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

に：

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

android - Android:Button クリックして datepicker を表示し、次に datepicker.Button から日付を表示します。ボタンは ArrayAdapter のすべてのリストビュー項目にあります

3 に答える 3

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