Android DatePicker仅更改为月份和年份

Posted 2023-01-20

我有一个DatePickerDialog，我只想查看月份和年份。如何更改此代码？

public void chooseDate2(View v) 
    new DatePickerDialog(
        act.this,
        d1,
        dateAndTime1.get(Calendar.YEAR) + 2,
        dateAndTime1.get(Calendar.MONTH),
        dateAndTime1.get(Calendar.DAY_OF_MONTH)
    ).show();

private void updateLabel2() 
    scadenza.setText(fmtDateAndTime.format(dateAndTime1.getTime()));           

DatePickerDialog.OnDateSetListener d1=new DatePickerDialog.OnDateSetListener() 
    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) 
        dateAndTime1.set(Calendar.YEAR, year);
        dateAndTime1.set(Calendar.MONTH, monthOfYear);
        dateAndTime1.set(Calendar.DAY_OF_MONTH, dayOfMonth);
        updateLabel2();
    
;

谢谢

答案

尝试以下代码。它将显示仅包含年和月（无日）的DatePicker

private DatePickerDialog createDialogWithoutDateField() 
        DatePickerDialog dpd = new DatePickerDialog(this, null, 2014, 1, 24);
        try 
            java.lang.reflect.Field[] datePickerDialogFields = dpd.getClass().getDeclaredFields();
            for (java.lang.reflect.Field datePickerDialogField : datePickerDialogFields) 
                if (datePickerDialogField.getName().equals("mDatePicker")) 
                    datePickerDialogField.setAccessible(true);
                    DatePicker datePicker = (DatePicker) datePickerDialogField.get(dpd);
                    java.lang.reflect.Field[] datePickerFields = datePickerDialogField.getType().getDeclaredFields();
                    for (java.lang.reflect.Field datePickerField : datePickerFields) 
                        Log.i("test", datePickerField.getName());
                        if ("mDaySpinner".equals(datePickerField.getName())) 
                            datePickerField.setAccessible(true);
                            Object dayPicker = datePickerField.get(datePicker);
                            ((View) dayPicker).setVisibility(View.GONE);
                        
                    
                
            
         
        catch (Exception ex) 
        
        return dpd;
    

此方法返回一个日期选择器对话框。因此，在按钮的onClick方法中添加以下代码以显示对话框。

createDialogWithoutDateField().show();

另一答案

[我最近自己偶然发现了这个问题，因此我测试了本文的多个解决方案以及关于Stackoverflow的类似问题。

不幸的是，我没有找到适用于android 5+的解决方案

我最终实现了嵌入两个NumberPickers的自己的简单DialogFragment。这应该与3.0及更高版本的所有版本兼容。

以下是代码：

  public class MonthYearPickerDialog extends DialogFragment 

  private static final int MAX_YEAR = 2099;
  private DatePickerDialog.OnDateSetListener listener;

  public void setListener(DatePickerDialog.OnDateSetListener listener) 
    this.listener = listener;
  

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) 
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    // Get the layout inflater
    LayoutInflater inflater = getActivity().getLayoutInflater();

    Calendar cal = Calendar.getInstance();

    View dialog = inflater.inflate(R.layout.date_picker_dialog, null);
    final NumberPicker monthPicker = (NumberPicker) dialog.findViewById(R.id.picker_month);
    final NumberPicker yearPicker = (NumberPicker) dialog.findViewById(R.id.picker_year);

    monthPicker.setMinValue(0);
    monthPicker.setMaxValue(11);
    monthPicker.setValue(cal.get(Calendar.MONTH));

    int year = cal.get(Calendar.YEAR);
    yearPicker.setMinValue(year);
    yearPicker.setMaxValue(MAX_YEAR);
    yearPicker.setValue(year);

    builder.setView(dialog)
        // Add action buttons
        .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() 
          @Override
          public void onClick(DialogInterface dialog, int id) 
            listener.onDateSet(null, yearPicker.getValue(), monthPicker.getValue(), 0);
          
        )
        .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() 
          public void onClick(DialogInterface dialog, int id) 
            MonthYearPickerDialog.this.getDialog().cancel();
          
        );
    return builder.create();
  

和布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:orientation="vertical">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:orientation="horizontal">

        <NumberPicker
            android:id="@+id/picker_month"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="20dp"
            android:layout_marginRight="20dp">

        </NumberPicker>

        <NumberPicker
            android:id="@+id/picker_year"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

        </NumberPicker>

    </LinearLayout>
</LinearLayout>

要显示布局，请使用：

MonthYearPickerDialog pd = new MonthYearPickerDialog();
pd.setListener(this);
pd.show(getFragmentManager(), "MonthYearPickerDialog");

另一答案

我不建议您使用反射来做这种事情。

有一种更简单，更漂亮的方法：

((ViewGroup) datePickerDialog.getDatePicker()).findViewById(Resources.getSystem().getIdentifier("day", "id", "android")).setVisibility(View.GONE);

请注意，.getDatePicker()中的DatePickerDialog方法适用于API LEVEL >= 11。

此外，它不适用于API LEVEL> = 21。

另一答案

[[Stephan Klein答案的更多高级形式。

。我还处理过[[february 28等日期，也处理过[[leap year。]]

MonthYearPickerDialogpublic class MonthYearPickerDialog extends DialogFragment private DatePickerDialog.OnDateSetListener listener; private int daysOfMonth = 31; private NumberPicker monthPicker; private NumberPicker yearPicker; private NumberPicker dayPicker; private Calendar cal = Calendar.getInstance(); public static final String MONTH_KEY = "monthValue"; public static final String DAY_KEY = "dayValue"; public static final String YEAR_KEY = "yearValue"; int monthVal = -1 , dayVal = -1 , yearVal =-1 ; @Override public void onCreate(@Nullable Bundle savedInstanceState) super.onCreate(savedInstanceState); Bundle extras = getArguments(); if(extras != null) monthVal = extras.getInt(MONTH_KEY , -1); dayVal = extras.getInt(DAY_KEY , -1); yearVal = extras.getInt(YEAR_KEY , -1); public static MonthYearPickerDialog newInstance(int monthIndex , int daysIndex , int yearIndex) MonthYearPickerDialog f = new MonthYearPickerDialog(); // Supply num input as an argument. Bundle args = new Bundle(); args.putInt(MONTH_KEY, monthIndex); args.putInt(DAY_KEY, daysIndex); args.putInt(YEAR_KEY, yearIndex); f.setArguments(args); return f; public void setListener(DatePickerDialog.OnDateSetListener listener) this.listener = listener; @Override public Dialog onCreateDialog(Bundle savedInstanceState) //getDialog().setTitle("Add Birthday"); AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); // Get the layout inflater LayoutInflater inflater = getActivity().getLayoutInflater(); View dialog = inflater.inflate(R.layout.month_year_picker, null); monthPicker = (NumberPicker) dialog.findViewById(R.id.picker_month); yearPicker = (NumberPicker) dialog.findViewById(R.id.picker_year); dayPicker = (NumberPicker) dialog.findViewById(R.id.picker_day); monthPicker.setMinValue(1); monthPicker.setMaxValue(12); if(monthVal != -1)// && (monthVal > 0 && monthVal < 13)) monthPicker.setValue(monthVal); else monthPicker.setValue(cal.get(Calendar.MONTH) + 1); monthPicker.setDisplayedValues(new String[]"Jan","Feb","Mar","Apr","May","June","July", "Aug","Sep","Oct","Nov","Dec"); dayPicker.setMinValue(1); dayPicker.setMaxValue(daysOfMonth); if(dayVal != -1) dayPicker.setValue(dayVal); else dayPicker.setValue(cal.get(Calendar.DAY_OF_MONTH)); monthPicker.setOnValueChangedListener(new NumberPick