Android DatePicker 更改为仅月和年

Question

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

Answer 1

由于我最近自己偶然发现了这个问题，因此我测试了这篇文章中的多个解决方案以及 Stackoverflow 上的类似问题。

不幸的是，我没有找到特别适用于 Android 5+ 的有效解决方案

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

代码如下:

  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();
  }
}

还有布局

<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");