iOS開發小功能的自學思路（彈出生日鍵盤為例），ios思路

iOS開發小功能的自學思路（彈出生日鍵盤為例），ios思路

 

 

 1     #import "ViewController.h" 2  3     @interface ViewController () <UITextFieldDelegate> 4     @property (weak, nonatomic) IBOutlet UITextField *birthdayLabel; 5     @property (strong, nonatomic)UIDatePicker *datePicker; 6      7     @end 8      9     @implementation ViewController10     11     - (void)viewDidLoad {12         [super viewDidLoad];13         _birthdayLabel.delegate = self;14         15     //    設定自訂鍵盤16         [self setupBirthdayKeyboard];17         18     }19     20     - (void)setupBirthdayKeyboard21     {22     //    建立UIDatePicker，有預設的frame，所以不用設定尺寸23         UIDatePicker *picker = [[UIDatePicker alloc] init];24         _datePicker = picker;25     //    設定本地化（本地語言）26         picker.locale = [NSLocale localeWithLocaleIdentifier:@"zh"];27     //    設定時間顯示格式，還有其他好多種28         picker.datePickerMode = UIDatePickerModeDate;29        30         //監聽UIDatePicker的滾動31         [picker addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged];32          self.birthdayLabel.inputView = picker;33     }34     35     - (void)dateChange:(UIDatePicker *)datePicker36     {37     //    這樣就可以獲得生日鍵盤的  datePicker.date38     //    NSLog(@"%@",datePicker.date);39     //    NSLog(@"%s",__func__);40         41         42         //把獲得的日期轉化成字串，賦值到birthdayLabel中43         NSDateFormatter *fmt = [[NSDateFormatter alloc] init];44         fmt.dateFormat = @"yyyy-MM-dd";45         NSString *datestr = [fmt stringFromDate:datePicker.date];46         _birthdayLabel.text = datestr;47         48     }49     50     //是否允許開始編輯51     //- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField52     //{53     //    return NO;54     //}55     //是否允許使用者改變字元（是否允許輸入文字）56     - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{57         return NO;58     }59     - (void)textFieldDidBeginEditing:(UITextField *)textField60     {61         //擷取當前dataPicker的日期62          [self dateChange:_datePicker];63     }64     - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event65     {66         [self.view endEditing:YES];67     }68     @end