如何在棒棒糖中更改DatePicker的CalendarView的背景颜色?

本文介绍了如何在棒棒糖中更改DatePicker的CalendarView的背景颜色?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我非常努力地更改Lollipop的DatePicker的默认背景颜色.我不能简单地使用Styleable attrs来更改默认样式.正如另一篇帖子所述，我只能使用反射来查找视图，然后对其进行更改.

I worked so hard to change the default background color of Lollipop's DatePicker. I cannot simply use Styleable attrs to change the default style. And as mentioned in another post, I can only use reflection to find the view, and then make changes on it.

例如

if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    int monthDayYearLayoutId = Resources.getSystem().getIdentifier("date_picker_month_day_year_layout", "id", "android");
    if (monthDayYearLayoutId != 0) {
        View monthDayYearLayout = datePicker.findViewById(monthDayYearLayoutId);
        if (monthDayYearLayout != null) {
            monthDayYearLayout.setBackgroundColor(getResources().getColor(R.color.colorful));
        }
    }
}

但是，我只能访问DatePicker的上半部分(见下文).

However, I am only able to access the upper half of the DatePicker (see below).

DatePicker的上半部分

DatePicker's upper half

但是，对于下半部分，即CalendarView(请参见下文)，我无法使用相同的方法进行更改，因为找不到视图(我尝试通过ID R.id.calendar_view查找视图，但是不管用.).

However,for the lower half which is a CalendarView (see below), I cannot change using the same approach, as I cannot find the view (I tried to find the view by the id R.id.calendar_view, yet it is not working.).

DatePicker的下半部分

DatePicker's lower half

确切地说，我想更改带圆圈的日期的背景色和当前日期的textColor(在这种情况下，该日期为2014年3月7日)

To be precise, I would like to change the background color of the circled date, and the textColor for the present date (in this case, it is 7th March, 2014)

有任何提示吗?非常感谢.

Any hints? Thanks a lot.

更新:

浏览文档后，我发现下半部分的日历实际上是SimpleMonthView.class，并且圆圈的背景颜色和当前的textColor均由参数mSelectedDayColor决定.

After looking through the docs, I found that the lower half's calendar is in fact a SimpleMonthView.class, and the background color of the circle and the textColor for the present day are both governed by the param (int) mSelectedDayColor.

    mSelectedDayColor = colors.getColorForState(ENABLED_SELECTED_STATE_SET,
            res.getColor(R.color.holo_blue_light));

我不能使用以前的方法，因为日历是通过onDraw方法以编程方式创建的，而不是通过填充布局文件来创建的.

I cannot use the previous method, since the calendar is created in the onDraw method programmatically, but not by inflating a layout file.

所以问题归结为-我如何更改mSelectedDayColor的资源值?

So the problem boils down to - how could I change the resource value for mSelectedDayColor?

谢谢..

更新:在研究alanv的解决方案之后，我尝试了以下方法:由于我正在研究Lollipop的DatePicker，因此将以下内容放入v21-styles.xml:

Updates:After working on alanv's solution, I tried this:Since I am working on Lollipop's DatePicker, I put the following in v21-styles.xml:

<style name="MyCalendarView" parent="@android:style/Widget.CalendarView">
    <item name="android:showWeekNumber">true</item>
    <item name="android:minDate">01/01/2016</item>
    <item name="android:maxDate">12/31/2100</item>
    <item name="android:shownWeekCount">6</item>
    <item name="android:selectedWeekBackgroundColor">#330099FF</item>
    <item name="android:focusedMonthDateColor">#FFFFFFFF</item>
    <item name="android:unfocusedMonthDateColor">#66FFFFFF</item>
    <item name="android:weekNumberColor">#33FFFFFF</item>
    <item name="android:weekSeparatorLineColor">#19FFFFFF</item>
</style>

然后我更改了一些默认值，例如.android:minDate.

And I changed some of the default values, eg. android:minDate.

在我的activity_main.xml中，

And in my activity_main.xml,

<DatePicker
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/date_picker"
    android:layout_centerHorizontal="true"
    android:theme="@style/MyCalendarView"/>

但是对棒棒糖的DatePicker没有影响.

But there is no effect on DatePicker for Lollipop.

mSelectedDayColor

如何在棒棒糖中更改DatePicker的CalendarView的背景颜色?

问题描述

推荐答案