Self-learning ideas for developing small features in iOS (pop-up birthday keyboard for example)

1     #import "ViewController.h"2 3     @interfaceViewcontroller () <UITextFieldDelegate>4@property (Weak, nonatomic) Iboutlet Uitextfield *Birthdaylabel;5@property (Strong, nonatomic) Uidatepicker *DatePicker;6     7     @end8     9     @implementationViewcontrollerTen      One- (void) Viewdidload { A [Super Viewdidload]; -_birthdaylabel.Delegate=Self ; -          the     //setting up a custom keyboard - [self setupbirthdaykeyboard]; -          -     } +      -- (void) Setupbirthdaykeyboard +     { A     //Create Uidatepicker with default frame, so don't set the size atUidatepicker *picker =[[Uidatepicker alloc] init]; -_datepicker =Picker; -     //set localization (native language) -Picker.locale = [Nslocale localewithlocaleidentifier:@"ZH"]; -     //set the time display format, there are many other good -Picker.datepickermode =uidatepickermodedate; in         -         //monitoring the scrolling of Uidatepicker to [Picker addtarget:self action: @selector (Datechange:) forcontrolevents:uicontroleventvaluechanged]; +Self.birthdayLabel.inputView =Picker; -     } the      *- (void) Datechange: (Uidatepicker *) DatePicker $     {Panax Notoginseng     //this will get the datepicker.date of the birthday keyboard. -     //NSLog (@ "%@", datepicker.date); the     //NSLog (@ "%s", __func__); +          A          the         //converts the acquired date into a string and assigns a value to the Birthdaylabel +NSDateFormatter *fmt =[[NSDateFormatter alloc] init]; -Fmt.dateformat =@"YYYY-MM-DD"; $NSString *datestr =[FMT stringFromDate:datePicker.date]; $_birthdaylabel.text =Datestr; -          -     } the      -     //allow editing to startWuyi     //-(BOOL) textfieldshouldbeginediting: (Uitextfield *) TextField the     //{ -     //return NO; Wu     //} -     //whether the user is allowed to change characters (whether or not to enter text) About-(BOOL) TextField: (Uitextfield *) TextField Shouldchangecharactersinrange: (nsrange) range replacementstring: ( NSString *)string{ $         returnNO; -     } -- (void) Textfielddidbeginediting: (Uitextfield *) TextField -     { A         //Gets the date of the current Datapicker + [self datechange:_datepicker]; the     } -- (void) Touchesbegan: (Nsset<uitouch *> *) touches withevent: (Uievent *)Event $     { the [Self.view Endediting:yes]; the     } the     @end

Self-learning ideas for developing small features in iOS (pop-up birthday keyboard for example)