iOS:UIPickerView选择器的使用

通过UIPickerView选择器做的一个类似于密码锁的日期时间表

源码如下：

 #import <UIKit/UIKit.h>

 @interface ViewController : UIViewController<UIPickerViewDataSource,UIPickerViewDelegate>
 @property (strong,nonatomic) NSArray *weeks;//显示第一列的数据
 @property (strong,nonatomic) NSArray *time; //显示第二列的数据

 @property (strong,nonatomic)NSArray *years;   //显示第三列的显示年
 @property (strong,nonatomic)NSArray *months;  //显示第四列的显示月
 @property (strong,nonatomic)NSArray *days;    //显示第五列的显示日

 @property (assign,nonatomic)NSInteger number;
 @property (strong,nonatomic)NSString *str;
 @end

 #import "ViewController.h"

 @interface ViewController ()
 @property (weak, nonatomic) IBOutlet UIPickerView *pickerView;

 @end

 @implementation ViewController
 - (void)viewDidLoad {
     [super viewDidLoad];

     //初始化

     self.weeks = [NSArray arrayWithObjects:@"Mon",@"Tus",@"Thi",@"Wen",@"Fir",@"Sat",@"Sun", nil];

     self.time = [NSArray arrayWithObjects:@"上午",@"中午",@"下午", nil];

     self.years = [NSArray arrayWithObjects:@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",nil];

     self.months = [NSArray arrayWithObjects:@"",@"", @"", @"", @"", @"", @"", @"", @"", @"", @"", @"", nil];

     self.days = [NSArray arrayWithObjects:@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",@"",nil];

     //设置pickerView的DataSource和Delegate
     self.pickerView.dataSource = self;
     self.pickerView.delegate = self;
 }
 - (void)didReceiveMemoryWarning {
     [super didReceiveMemoryWarning];
     // Dispose of any resources that can be recreated.
 }

 #pragma mark-pickerView的代理方法

 //设置有多少列
 -(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
 {
     return ;
 }

 //设置每列多少行
 -(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
 {
     switch (component)
     {
         case :
             self.number = self.weeks.count;
             break;
         case :
             self.number = self.time.count;
             break;
         case :
             self.number = self.years.count;
             break;
         case :
             self.number = self.months.count;
             break;
         case :
             self.number = self.days.count;
             break;
     }

     return self.number;

 }

 //设置每行每列显示的内容
 -(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
 {

     switch (component)
     {
         case :
             self.str = self.weeks[row];
             break;
         case :
             self.str = self.time[row];
             break;
         case :
             self.str = self.years[row];
             break;
         case :
             self.str = self.months[row];
             break;
         case :
             self.str = self.days[row];
             break;
     }

     return self.str;

 }

 //通过代理方法didSelectRows获取数据
 - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
 {
     //NSLog(@"列：%ld，行：%ld",component,row);
     switch (component)
     {
         case :
             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[row],self.time[[pickerView selectedRowInComponent:]],self.years[[pickerView selectedRowInComponent:]],self.months[[pickerView selectedRowInComponent:]],self.days[[pickerView selectedRowInComponent:]]]);
             break;
         case :
             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:]],self.time[row],self.years[[pickerView selectedRowInComponent:]],self.months[[pickerView selectedRowInComponent:]],self.days[[pickerView selectedRowInComponent:]]]);
             break;
         case :
             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:]],self.time[[pickerView selectedRowInComponent:]],self.years[row],self.months[[pickerView selectedRowInComponent:]],self.days[[pickerView selectedRowInComponent:]]]);
             break;
         case :
             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:]],self.time[[pickerView selectedRowInComponent:]],self.years[[pickerView selectedRowInComponent:]],self.months[row],self.days[[pickerView selectedRowInComponent:]]]);
             break;
         case :
             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:]],self.time[[pickerView selectedRowInComponent:]],self.years[[pickerView selectedRowInComponent:]],self.months[[pickerView selectedRowInComponent:]],self.days[row]]);
             break;
     }
 }
 @end