java - 为日期选择器扩展 DialogFragment

Question

我正在尝试遵循本教程:http://developer.android.com/guide/topics/ui/controls/pickers.html#DatePicker

这是他们提供的代码，所以我创建了一个新类。但我在新类(class)中遇到了错误。我在定义 public static class DatePickerFragment 时遇到错误。错误是Illegal modifier for the class DatePickerFragment; only public, abstract & final are permitted

public static class DatePickerFragment extends DialogFragment
                            implements DatePickerDialog.OnDateSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current date as the default date in the picker
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);

        // Create a new instance of DatePickerDialog and return it
        return new DatePickerDialog(getActivity(), this, year, month, day);
    }

    public void onDateSet(DatePicker view, int year, int month, int day) {
        // Do something with the date chosen by the user
    }
}

Answer 1

我猜您的代码位于单独的 .java 文件中。摆脱static关键字。

如果它是内部类，那么您可以在 Activity 类中使​​用 static 修饰符。

还要检查这个，它表示顶级类不能是静态的

Illegal modifier error for static class

您可以找到一个示例@

How to transfer the formatted date string from my DatePickerFragment?