android 只显示年月的日历

这是一篇不完整的文章 希望看到的读者 能够 跟我完善一下 ！
这系统自带的日历 多多少少 会有弊端 ！
手机版本不一样 操作不一样 所以我们在判断隐藏某一部分之前 还要判断api的版本

这是我要达成的效果图 .png

1.首先继承一下系统自带的日历dialog

public class YearPickerDialog extends DatePickerDialog {
    public YearPickerDialog(Context context, OnDateSetListener callBack, int year, int monthOfYear, int dayOfMonth) {
        super(context, callBack, year, monthOfYear, dayOfMonth);
    }



    @Override
    public void onDateChanged(DatePicker view, int year, int month, int day) {
        super.onDateChanged(view, year, month, day);
        this.setTitle(year + "年" );
    }
}

2.写一个遍历方法

 private DatePicker findDatePicker(ViewGroup group) {
        if (group != null) {
            for (int i = 0, j = group.getChildCount(); i < j; i++) {
                View child = group.getChildAt(i);
                if (child instanceof DatePicker) {
                    return (DatePicker) child;
                } else if (child instanceof ViewGroup) {
                    DatePicker result = findDatePicker((ViewGroup) child);
                    if (result != null)
                        return result;
                }
            }
        }
        return null;
    }

3.调用

final Calendar calendar = Calendar.getInstance();
        YearPickerDialog dialog=   new YearPickerDialog(getActivity(), new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                calendar.set(Calendar.YEAR, year);
                calendar.set(Calendar.MONTH, monthOfYear);
                LogUtils.d(DateUtil.clanderTodatetime(calendar, "yyyy-MM"));
            }
        },calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DATE));
        dialog.show();


        DatePicker dp = findDatePicker((ViewGroup) dialog.getWindow().getDecorView());
        if (dp != null) {
            ((ViewGroup)((ViewGroup) dp.getChildAt(0)).getChildAt(0)).getChildAt(1).setVisibility(View.GONE);
        }

4.其中的DateUtil 类方法

public static String clanderTodatetime(Calendar calendar, String style) {
        SimpleDateFormat formatter = new SimpleDateFormat(style);
        return formatter.format(calendar.getTime());
    }