IOS UITextField 选择出生日期

说一下textField两个属性：

// Presented when object becomes first responder.  If set to nil, reverts to following responder chain.  If

// set while first responder, will not take effect until reloadInputViews is called.

@property (nullable,readwrite,strong)UIView *inputView;             

@property (nullable,readwrite,strong)UIView *inputAccessoryView;

从苹果官方解释来看就是你获得第一响应的时候，弹出的InputViews改变。

-(void)setBrithDayInputView{

datePicker  = [[UIDatePicker alloc]initWithFrame:CGRectMake(0,0,ScreenWidth,200)];

datePicker.datePickerMode  = UIDatePickerModeDate;

    [datePickeraddTarget:selfaction:@selector(dateChanged)forControlEvents:UIControlEventValueChanged];

accessoryView  =  [[UIToolbar alloc]initWithFrame:CGRectMake(0,0,ScreenWidth,40)];

UIBarButtonItem *flex = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpacetarget:selfaction:nil];

UIBarButtonItem *right = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDonetarget:selfaction:@selector(done)];

accessoryView.items =@[flex,right];

self.brithdayInputView.inputView   =  datePicker;

self.brithdayInputView.inputAccessoryView = accessoryView;

}

-(void)dateChanged{

NSDateFormatter *dateFormat=[[NSDateFormatteralloc]init];

    [dateFormat setDateFormat:@"yyyy-MM-dd"];

NSString  * date =[dateFormatstringFromDate:datePicker.date];

self.brithdayInputView.text  =  date;

}

-(void)done{

    [self.brithdayInputViewresignFirstResponder];

    [selfdateChanged];

}

再简单的说下小细节吧

inputAccessoryView  是键盘的附属视图注意frame

     toolbarItem         设置位置没有用，记得用弹簧调整你想要的位置。