iPhone iOS 4 UITimePicker强制24小时视图
我的应用程序中有一个 UITimePicker，我想用它来选择用户事件后的特定小时数和分钟数。 （例如晚上 7 点后 3 小时 15 分钟）这就是为什么我想以 24 小时格式显示日期，否则用户可能会感到困惑。
有没有办法强制时间选择器显示 24 小时视图，而与区域设置的时钟格式无关？或者我只是选择另一个区域设置？
UIDatePicker *timePicker;
NSDateFormatter *timePickerFormatter;
[self.view addSubview:timePicker];
float tempHeight = timePicker.frame.size.height;
timePicker.frame = CGRectMake(0,150 ,self.view.frame.size.width , tempHeight);
timePicker.hidden = YES;
timePickerFormatter= [[NSDateFormatter alloc]init ];
[timePickerFormatter setDateFormat:@"HH:mm"]; //formats date for processing
谢谢你！
更新：我找到了这样的答案：
timepicker.datePickerMode = UIDatePickerModeCountDownTimer;
这通过显示 0 到 23 小时和 0 到 59 分钟有效地完成了我想要做的事情，无需进一步自定义！抱歉询问 24 小时格式，这就是我要移植的 Android 应用程序正在使用的格式！
I got a UITimePicker in my app, and I want to use it to select a certain number of hours and minutes after a user event. (for example 3 hours 15 minutes after 7PM) This is why I want to show the date in 24 hour format, otherwise the user might get confused.
Is there a way to force the timepicker to show 24 hour view, independent of the clock format for the locale? Or do I just pick another locale?
UIDatePicker *timePicker;
NSDateFormatter *timePickerFormatter;
[self.view addSubview:timePicker];
float tempHeight = timePicker.frame.size.height;
timePicker.frame = CGRectMake(0,150 ,self.view.frame.size.width , tempHeight);
timePicker.hidden = YES;
timePickerFormatter= [[NSDateFormatter alloc]init ];
[timePickerFormatter setDateFormat:@"HH:mm"]; //formats date for processing
Thank you!
Update: I found the answer like this:
timepicker.datePickerMode = UIDatePickerModeCountDownTimer;
This effectively accomplishes what I'm trying to do by displaying 0 to 23 hours and 0 to 59 minutes, no further customization required! Sorry for asking about the 24 hour format, this is what the Android app that I'm porting over was using!
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您是否尝试使用
日历和UIDatePicker的locale属性？这应该是您问题的解决方案，因为正如文档所解释的那样（阅读 UIDatePicker 类参考):
[编辑] 经过进一步调查，似乎
NSLocale无法覆盖 AM/PM 设置...（我通过...简单地获得了该信息在 Stackoverflow 中搜索！并且您的问题之前已经被提出并回答过很多次）Did you try to use the
calendarandlocaleproperties ofUIDatePicker?That should be the solution for your problem, because as the documentation explains (read the UIDatePicker class reference):
[EDIT] after further investigation, it seems the
NSLocalecan't override the AM/PM setting… (I had that information by… simply searching here in Stackoverflow! And your question has already been asked and answered many times before)对于可视化，我使用：
您可以使用您自己的语言环境。
对于我使用的 NSDateFormatter：
它不再破坏我的应用程序。
For visualization I use:
You may use your own locale.
And for NSDateFormatter I Use:
It is no longer breaks my applications.