UIalertController日期控件

2019-11-14 17:58:17

字體：大中小

來源：轉載

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效果圖

思路是依靠 UIalertController的高度是由內容判定，修改其view 即可

首先不需要改變該類的初始化（因為只是修改其view的界面）

繼承UIalertController的.h文件

#import <UIKit/UIKit.h>typedef void(^BlockDate)(id date);@interface SheetDate : UIAlertController@PRoperty(nonatomic,copy)BlockDate blockDate;@property(retain,nonatomic)UIDatePicker* datePicker;/** *  單例 */+(SheetDate *)defaultSheetDate;@end

繼承UIalertController的.m文件

#import "SheetDate.h"@interface SheetDate ()@end@implementation SheetDate- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view from its nib.}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}/** *  添加日期控件 */-(void)addDatePicker{        self.datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 0, 320, 216)];        self.datePicker.datePickerMode = UIDatePickerModeDate;        self.datePicker.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"];        [self.view addSubview:self.datePicker];    }/** *  處理日期數據 * *  @return */-(NSString*)dealDate{    NSDateFormatter * formatter = [[NSDateFormatter alloc ] init];    if (self.datePicker.datePickerMode==UIDatePickerModeTime)    {        [formatter setDateFormat:@"HH:ss"];    }    else if(self.datePicker.datePickerMode==UIDatePickerModeDate)    {        [formatter setDateFormat:@"YYYY-MM-dd"];    }    else if(self.datePicker.datePickerMode==UIDatePickerModeDateAndTime)    {        [formatter setDateFormat:@"YYYY-MM-dd HH:ss"];    }        NSString* currentTime = [formatter stringFromDate:self.datePicker.date];    return currentTime;}/** *  單例 * *  @return */+(SheetDate *)defaultSheetDate{    //sheetDate只會實例化一次    static SheetDate* sheetDate=nil;    //保證線程安全，defaultSheetDate只執行一次    static dispatch_once_t once;    dispatch_once(&once, ^                  {                      sheetDate=[SheetDate alertControllerWithTitle:nil                                                            message:@"/n/n/n/n/n/n/n/n/n/n/n"                                                     preferredStyle:(UIAlertControllerStyleActionSheet)];                      [sheetDate addDatePicker];                      UIAlertAction* ok=[UIAlertAction actionWithTitle:@"確定"                                                                 style:(UIAlertActionStyleDefault)                                                               handler:^(UIAlertAction * __nonnull action)                                         {                                             sheetDate.blockDate([sheetDate dealDate]);                                                                                      }];                      [sheetDate addAction:ok];                  });        return sheetDate;}

添加的日期控件是以屬性形式添加的，可以根據情況配置。

首先使用系統的方法創建uialertcontroller對象，使用/n是因為需要擴大顯示的高度，然后調用[sheetDate addDatePicker]添加自定義界面，根據情況初始化使用日期數據的block

然后在sheet的選項中觸發就可以了。

然后是使用

/** *  選擇日期時間 * *  @param sender */- (IBAction)chooseDate:(UIButton *)sender{    SheetDate* sheetDate=[SheetDate defaultSheetDate];    sheetDate.datePicker.datePickerMode=UIDatePickerModeDateAndTime;    sheetDate.blockDate=^(NSString* date)    {        NSLog(@"%s/n%@",__FUNCTION__,date);        [sender setTitle:date                forState:(UIControlStateNormal)];            };    [self presentViewController:sheetDate                       animated:YES                     completion:nil];    }