iOS uipickerview 选择DATE

最新推荐文章于 2024-06-16 17:50:54 发布

dj0119

最新推荐文章于 2024-06-16 17:50:54 发布

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分类专栏： IOS开发文章标签： uipicker 年月日选择器

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本文介绍了一种使用自定义UIPickerView组件实现日期选择功能的方法，包括年份、月份和日期的选择，并且能够区分闰年和平年，确保用户在选择日期时的准确性。此外，通过简单的修改，还可以加载时间选择功能。本文详细解释了如何配置UIPickerView的数据源、代理方法以及与其他UI元素的交互，旨在为开发者提供一种实用的日期选择解决方案。

项目中最初使用，后来没有用上放在BLOG中保存, 部分借鉴国外的方法。

这个UIPIKER非常好用，能区分润年，30天和31天的月份。稍加修改能加载时间等。

.h文件

#import <UIKit/UIKit.h>

@interface InvoicesViewController : UIViewController<UITextFieldDelegate,UIPickerViewDataSource,UIPickerViewDelegate,UIWebViewDelegate>

{

IBOutlet UIPickerView *CustomPicker;

IBOutlet UITextField *timeTextField; //时间选择文本框

IBOutlet UIToolbar *toolbarCancelDone;

IBOutlet UIWebView *checkWebView;

}

@property (nonatomic, strong)NSString *phoneStr;

- (IBAction)actionCancel:(id)sender;

- (IBAction)actionDone:(id)sender;

- (IBAction)checkListBtn:(id)sender;

- (IBAction)backBtn:(id)sender;

.m文件

#import "InvoicesViewController.h"

#define currentMonth [currentMonthString integerValue]

@interface InvoicesViewController ()

{

NSMutableArray *yearArray;

NSArray *monthArray;

NSMutableArray *DaysArray;

NSString *currentMonthString;

int selectedYearRow;

int selectedMonthRow;

int selectedDayRow;

BOOL firstTimeLoad;

}

@end

- (void)viewDidLoad

{

firstTimeLoad = NO;

CustomPicker.hidden = YES;

toolbarCancelDone.hidden = YES;

NSDate *date = [NSDate date];

NSDateFormatter *formatter = [[NSDateFormatter alloc]init];

[formatter setDateFormat:@"yyyy"];

NSString *currentyearString = [NSString stringWithFormat:@"%@",

[formatter stringFromDate:date]];

// Get Current Month

[formatter setDateFormat:@"MM"];

currentMonthString = [NSString stringWithFormat:@"%d",[[formatter stringFromDate:date]integerValue]];

// Get Current Date

[formatter setDateFormat:@"dd"];

NSString *currentDateString = [NSString stringWithFormat:@"%@",[formatter stringFromDate:date]];

yearArray = [[NSMutableArray alloc]init];

for (int i = 1970; i <= 2050 ; i++)

{

[yearArray addObject:[NSString stringWithFormat:@"%d",i]];

}

// PickerView - Months data

monthArray = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",@"11",@"12"];

DaysArray = [[NSMutableArray alloc]init];

for (int i = 1; i <= 31; i++)

{

[DaysArray addObject:[NSString stringWithFormat:@"%d",i]];

}

[CustomPicker selectRow:[yearArray indexOfObject:currentyearString] inComponent:0 animated:YES];

[CustomPicker selectRow:[monthArray indexOfObject:currentMonthString] inComponent:1 animated:YES];

[CustomPicker selectRow:[DaysArray indexOfObject:currentDateString] inComponent:2 animated:YES];

timeTextField.borderStyle = UITextBorderStyleNone;

}

//PICKER Delegate

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

{

if (component == 0)

{

selectedYearRow = row;

[CustomPicker reloadAllComponents];

}

else if (component == 1)

{

selectedMonthRow = row;

[CustomPicker reloadAllComponents];

}

else if (component == 2)

{

selectedDayRow = row;

[CustomPicker reloadAllComponents];

}

- (UIView *)pickerView:(UIPickerView *)pickerView

viewForRow:(NSInteger)row

forComponent:(NSInteger)component

reusingView:(UIView *)view {

// Custom View created for each component

UILabel *pickerLabel = (UILabel *)view;

if (pickerLabel == nil) {

CGRect frame = CGRectMake(0.0, 0.0, 50, 60);

pickerLabel = [[UILabel alloc] initWithFrame:frame];

[pickerLabel setTextAlignment:NSTextAlignmentCenter];

[pickerLabel setBackgroundColor:[UIColor clearColor]];

[pickerLabel setFont:[UIFont systemFontOfSize:15.0f]];

}

if (component == 0)

{

pickerLabel.text = [yearArray objectAtIndex:row]; // Year

}

else if (component == 1)

{

pickerLabel.text = [monthArray objectAtIndex:row]; // Month

}

else if (component == 2)

{

pickerLabel.text = [DaysArray objectAtIndex:row]; // Date

}

return pickerLabel;

}

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView

{

return 3;

}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component

{

if (component == 0)

{

return [yearArray count];

}

else if (component == 1)

{

return [monthArray count];

}

else if (component == 2)

{ // day

if (firstTimeLoad)

{

if (currentMonth == 1 || currentMonth == 3 || currentMonth == 5 || currentMonth == 7 || currentMonth == 8 || currentMonth == 10 || currentMonth == 12)

{

return 31;

}

else if (currentMonth == 2)

{

int yearint = [[yearArray objectAtIndex:selectedYearRow]intValue ];

if(((yearint %4==0)&&(yearint %100!=0))||(yearint %400==0)){

return 29;

}

else

{

return 28; // or return 29

}

else

{

return 30;

}

else

{

if (selectedMonthRow == 0 || selectedMonthRow == 2 || selectedMonthRow == 4 || selectedMonthRow == 6 || selectedMonthRow == 7 || selectedMonthRow == 9 || selectedMonthRow == 11)

{

return 31;

}

else if (selectedMonthRow == 1)

{

int yearint = [[yearArray objectAtIndex:selectedYearRow]intValue ];

if(((yearint %4==0)&&(yearint %100!=0))||(yearint %400==0)){

return 29;

}

else

{

return 28; // or return 29

}

else

{

return 30;

}

}else

{ // am/pm

return 2;

}

//点击空白处键盘回退

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

[timeTextField resignFirstResponder];

}

//ToolBarAction

- (IBAction)actionDone:(id)sender {

timeTextField.text = [NSString stringWithFormat:@"%@-%@-%@",[yearArray objectAtIndex:[CustomPicker selectedRowInComponent:0]],[monthArray objectAtIndex:[CustomPicker selectedRowInComponent:1]],[DaysArray objectAtIndex:[CustomPicker selectedRowInComponent:2]]];

[UIView animateWithDuration:0.5

delay:0.1

options: UIViewAnimationOptionCurveEaseIn

animations:^{

CustomPicker.hidden = YES;

toolbarCancelDone.hidden = YES;

}

completion:^(BOOL finished){

}];

}

- (IBAction)actionCancel:(id)sender

{