UIalertController日期控制項，uialertcontroller

UIalertController日期控制項，uialertcontroller

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的介面）

繼承UIalertController的.h檔案

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

繼承UIalertController的.m檔案

#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.}/** *  添加日期控制項 */-(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];    }/** *  處理日期資料 * *  @return */-(NSString*)dealDate{    NSDateFormatter * formatter = [[NSDateFormatter alloc ] init];    if (self.datePicker.datePickerMode==UIDatePickerModeTime)    {        [formatter setDateFormat:@"HH:ss"];    }    else    {        [formatter setDateFormat:@"YYYY-MM-dd"];    }        NSString* currentTime = [formatter stringFromDate:self.datePicker.date];    return currentTime;}

然後是使用

/** *  日期／時間選擇 * *  @param sender */- (IBAction)chooseDate:(UIButton *)sender{    SheetDate* sheetDate=[SheetDate alertControllerWithTitle:nil                                                     message:@"\n\n\n\n\n\n\n\n\n\n"                                              preferredStyle:(UIAlertControllerStyleActionSheet)];    [sheetDate addDatePicker];    sheetDate.blockDate=^(NSString* date)    {        [sender setTitle:date                forState:(UIControlStateNormal)];    };    //開始時間，結束時間    if (sender.tag==70||sender.tag==71)    {        sheetDate.datePicker.datePickerMode=UIDatePickerModeTime;    }    UIAlertAction* ok=[UIAlertAction actionWithTitle:@"確定"                                               style:(UIAlertActionStyleDefault)                                             handler:^(UIAlertAction * __nonnull action)    {        sheetDate.blockDate([sheetDate dealDate]);            }];    [sheetDate addAction:ok];    [self presentViewController:sheetDate                       animated:YES                     completion:nil];

首先使用系統的方法建立uialertcontroller對象，使用\n是因為需要擴大顯示的高度，然後調用[sheetDate addDatePicker]添加自訂介面，根據情況初始化使用日期資料的block

然後在sheet的選項中觸發就可以了。