Android：如何将 DatePicker 视图日期格式从 MM/dd/yyyy 更改为 dd/MM/yyyy？
我很长一段时间以来一直试图找到这个问题的答案。我还查看了以下链接：Android - DatePicker Widget Format。 在我的手机/模拟器 (v 2.3.3) 上，DatePicker 小部件和对话框均不采用设置中指定的日期格式（设置 -> 日期和时间 -> 选择日期格式）。它们的格式始终为“MM/dd/yyyy”。区域设置设置为英国英语。
当我读取设置时，我得到“d/MM/yyyy”：
Settings.System.getString(getContentResolver(), Settings.System.DATE_FORMAT);
有人知道如何更改DatePicker 视图中的日期格式？
I have been trying to get an answer to this question for quite a while. I also had a look at the following link: Android - DatePicker Widget Format.
On my phone/ emulator (v 2.3.3) both the DatePicker widget and the dialog do not take the date format specified in settings (Settings->Date&Time->Select date format). They are always in the format "MM/dd/yyyy". The locale is set to English UK.
I get "d/MM/yyyy" when I read the settings with:
Settings.System.getString(getContentResolver(), Settings.System.DATE_FORMAT);
Does anybody have an idea about how to change the date format in a DatePicker view?
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该设置非常具体。它仅适用于以“短格式”显示的日期。只要您使用其他任何内容（在本例中，DatePicker 似乎使用“中”），那么这些设置将被忽略，并且区域设置的默认格式将接管。
我可以确认，如果您更改手机的语言（实际上是区域设置），日期选择器中元素的顺序确实会发生变化。我想这意味着我不同意 Dan S 的说法，即“系统不使用任何机制来本地化 DatePicker”。如果你看一下代码，你可以看到（至少从 2.1 开始），有一个 reorderPickers() 方法正是执行此操作。
英语：
法语：
That setting is very specific. It is only meant to apply to dates dates shown in "short format". As long as you're using anything else (in this case, the DatePicker seems to be using "medium"), then those settings will be disregarded and the Locale's default formatting will take over.
I can confirm that if you change your phone's the language (and, effectively, the Locale) the order of the elements does changes in the date picker. Which I guess means I disagree with Dan S's assertion that "the system does not use any mechanism to localize the DatePicker". If you look at the code, you can see that (at least since 2.1), there's a reorderPickers() method that does exactly this.
English:
French:
要覆盖 DatePicker 格式，最好的选择是通过对原始代码进行轻微编辑来覆盖其构造函数之一。您可以在代码中为您编辑 ViewGroup，但我会认真考虑不要这样做。
inflater.inflate(my.package.R.layout.localized_date_picker, this, true);To override the DatePicker format the best bet would be to override one of its constructors with a slight edit to the original code. You can edit the ViewGroup in code for you but I'd seriously consider not doing it that way.
inflater.inflate(R.layout.date_picker, this, true);withinflater.inflate(my.package.R.layout.localized_date_picker, this, true);