blocks|key|2394380|text|只需添加一个UIPickerView+(而不是UIDatePickerView)，并将数据源(和委托)设置为您的类。然后在你的类中添加类似这样的内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2394381|-+(NSInteger)numberOfComponentsInPickerView:(UIPickerView+*)pickerView
{
++++return+3;
}

-+(NSInteger)pickerView:(UIPickerView+*)pickerView+numberOfRowsInComponent:(NSInteger)component
{
++++++switch+(component)+{
++++case+0:+//+how+many+days?+(you+might+find+out+how+many+days+the+month+really+had,+instead+of+just+returning+31
++++{
#if+TARGET_IPHONE_SIMULATOR

++++++++return+50000;
++++++++//+I+don't+now,+what+the+exact+Value+for+NSIntegerMax+is,+but+50000+should+be+enough+for+testing.
#else

++++++++return+NSIntegerMax;
#endif

++++++++break;
++++}
++++case+1:+//+how+many+months+to+display?
++++{
#if+TARGET_IPHONE_SIMULATOR

++++++++return+50000;
#else

++++++++return+NSIntegerMax;
#endif

++++++++break;
++++}
++++case+2:
++++{
++++++++return+100;++//+how+many+years?
++++++++break;
++++}
}
return+0;
}

-+(NSString+*)pickerView:(UIPickerView+*)pickerView+titleForRow:(NSInteger)row+forComponent:(NSInteger)component
{
if+(component+==+0)+//+days
++++return+[NSString+stringWithFormat:@"%25i",(int)row+%25+31+%2B+1];
else+if+(component+==+1)+//+month
{
++++NSDateFormatter*+dateFormatter+=+[[NSDateFormatter+alloc]+init];
++++[dateFormatter+setDateFormat:@"MM"];
++++NSDate*+myDate+=+[dateFormatter+dateFromString:[NSString+stringWithFormat:@"%25i",(int)row+%25+12+%2B+1]];

++++NSDateFormatter+*formatter+=+[[NSDateFormatter+alloc]+init];
++++[formatter+setDateFormat:@"MMMM"];
++++return+[formatter+stringFromDate:myDate];
}


++++++++else+if+(component+==+2+&&+row+==+([pickerView+numberOfRowsInComponent:2]+-+1))
++++return+@"-----";
+++++++else
+++++++{
++++++++++++//+let's+use+NSDateFormatter+to+get+the+current+year:
++++++++NSDateFormatter+*dateFormatter+=+[[NSDateFormatter+alloc]+init];
++++++++[dateFormatter+setDateFormat:@"YYYY"];

++++++++return+[NSString+stringWithFormat:@"%25i",[[dateFormatter+stringFromDate:[NSDate+date]]+integerValue]+-+([pickerView+numberOfRowsInComponent:2]+-+1)+%2B+(row+%2B+1)];
++++++++}
}|code-block|syntax|javascript|2394382|结果如下所示：|2394383|📷|atomic|offset|length|2394384|​|2394385|您可以实现|2394386|-+(CGFloat)pickerView:(UIPickerView+*)pickerView+widthForComponent:(NSInteger)component+|2394387|以便更改每个组件的宽度。|2394388|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/1315595639f4a8bee08974598c31f3a4.png|imageAlt^0|0|0|0|0|1|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|16|8|@]|9|@]|A|$]]|$1|I|3|J|5|K|7|17|8|@]|9|@$L|18|M|19|1|1A]]|A|$]]|$1|N|3|O|5|6|7|1B|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1C|8|@]|9|@]|A|$]]|$1|R|3|S|5|D|7|1D|8|@]|9|@]|A|$E|F]]|$1|T|3|U|5|6|7|1E|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|W|$X|$5|Y|Z|10|A|$11|12|13|-4]]]]

Just add a UIPickerView (NOT UIDatePickerView) and set the Datasource (and delegate) to your Class. Then in your Class add something like this:

<pre><code>- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
 return 3;
}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
 switch (component) {
 case 0: // how many days? (you might find out how many days the month really had, instead of just returning 31
 {
#if TARGET_IPHONE_SIMULATOR

 return 50000;
 // I don't now, what the exact Value for NSIntegerMax is, but 50000 should be enough for testing.
#else

 return NSIntegerMax;
#endif

 break;
 }
 case 1: // how many months to display?
 {
#if TARGET_IPHONE_SIMULATOR

 return 50000;
#else

 return NSIntegerMax;
#endif

 break;
 }
 case 2:
 {
 return 100; // how many years?
 break;
 }
}
return 0;
}

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
if (component == 0) // days
 return [NSString stringWithFormat:@"%i",(int)row % 31 + 1];
else if (component == 1) // month
{
 NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
 [dateFormatter setDateFormat:@"MM"];
 NSDate* myDate = [dateFormatter dateFromString:[NSString stringWithFormat:@"%i",(int)row % 12 + 1]];

 NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
 [formatter setDateFormat:@"MMMM"];
 return [formatter stringFromDate:myDate];
}


 else if (component == 2 &amp;&amp; row == ([pickerView numberOfRowsInComponent:2] - 1))
 return @"-----";
 else
 {
 // let's use NSDateFormatter to get the current year:
 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
 [dateFormatter setDateFormat:@"YYYY"];

 return [NSString stringWithFormat:@"%i",[[dateFormatter stringFromDate:[NSDate date]] integerValue] - ([pickerView numberOfRowsInComponent:2] - 1) + (row + 1)];
 }
}
</code></pre>

Result looks like this:
<img src="https://i.stack.imgur.com/RnHyW.png" alt="resulting PickerView">

You might implement the 

<pre><code>- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component 
</code></pre>

in order to change the width for each component.

blocks|key|1187252|text|UIDatepickerModeDate不会让您获得所需的日期格式。因此，要么使用UIPickerView+&+customize+it+got，要么遵循上面答案中的技巧。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1187253|你也可以对阅读这篇文章感兴趣。|1187254|link+1|offset|length|1187255|希望这能有所帮助。|1187256|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/3348247/uidatepicker-select-month-and-year^0|0|0|0|6|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$F|U|G|V|1|W]]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

The UIDatepickerModeDate will not let you get the required format of date you are expecting. So either user a UIPickerView &amp; customize it got dates or else, follow the trick from the above answer.

Also you can be interested in reading this.

<a href="https://stackoverflow.com/questions/3348247/uidatepicker-select-month-and-year">link 1</a>

Hope that helps.

I am using UIDatePicker in my application with UIDatePickerModeDate. I would like to use the same style of the DatePicker as in iOS contact address book where you can set date without year:

<pre><code>September | 11 | 2014
October | 12 | ----
November | 13 |
</code></pre>

to get string in textField: <code>October 12</code>

Any ideas?

<img src="https://i.stack.imgur.com/xOkGJ.png" alt="enter image description here">

Showing a UIDatePicker with a null Year value

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我在我的UIDatePickerModeDate应用程序中使用了UIDatePicker。我想使用与iOS联系人通讯簿中相同的DatePicker样式，您可以在其中设置日期而不是年份：September | 11 | 2014October | 12 | ----November | 13 |获取textField中的...

问显示年份值为空的UIDatePicker
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