iOS:UIPickerView选择器的使用

 1 #import <UIKit/UIKit.h>
 2 
 3 @interface ViewController : UIViewController<UIPickerViewDataSource,UIPickerViewDelegate>
 4 @property (strong,nonatomic) NSArray *weeks;//显示第一列的数据
 5 @property (strong,nonatomic) NSArray *time; //显示第二列的数据
 6 
 7 @property (strong,nonatomic)NSArray *years;   //显示第三列的显示年
 8 @property (strong,nonatomic)NSArray *months;  //显示第四列的显示月
 9 @property (strong,nonatomic)NSArray *days;    //显示第五列的显示日
10 
11 @property (assign,nonatomic)NSInteger number;
12 @property (strong,nonatomic)NSString *str;
13 @end

  1 #import "ViewController.h"
  2 
  3 @interface ViewController ()
  4 @property (weak, nonatomic) IBOutlet UIPickerView *pickerView;
  5 
  6 @end
  7 
  8 @implementation ViewController
  9 - (void)viewDidLoad {
 10     [super viewDidLoad];
 11     
 12     //初始化
 13     
 14     self.weeks = [NSArray arrayWithObjects:@"Mon",@"Tus",@"Thi",@"Wen",@"Fir",@"Sat",@"Sun", nil];
 15     
 16     self.time = [NSArray arrayWithObjects:@"上午",@"中午",@"下午", nil];
 17     
 18     self.years = [NSArray arrayWithObjects:@"2000",@"2001",@"2002",@"2003",@"2004",@"2005",@"2006",@"2007",@"2008",@"2009",@"2010",@"2011",@"2012",@"2013",@"2014",nil];
 19     
 20     self.months = [NSArray arrayWithObjects:@"1",@"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"10", @"11", @"12", nil];
 21     
 22     self.days = [NSArray arrayWithObjects:@"01",@"02",@"03",@"04",@"05",@"06",@"07",@"08",@"09",@"10",@"11",@"12",@"13",@"14",@"15",@"16",@"17",@"18",@"19",@"20",@"21",@"22",@"23",@"24",@"25",@"26",@"27",@"28",@"29",@"30",@"31",nil];
 23     
 24     
 25     //设置pickerView的DataSource和Delegate
 26     self.pickerView.dataSource = self;
 27     self.pickerView.delegate = self;
 28 }
 29 - (void)didReceiveMemoryWarning {
 30     [super didReceiveMemoryWarning];
 31     // Dispose of any resources that can be recreated.
 32 }
 33 
 34 #pragma mark-pickerView的代理方法
 35 
 36 //设置有多少列
 37 -(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
 38 {
 39     return 5;
 40 }
 41 
 42 //设置每列多少行
 43 -(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
 44 {
 45     switch (component)
 46     {
 47         case 0:
 48             self.number = self.weeks.count;
 49             break;
 50         case 1:
 51             self.number = self.time.count;
 52             break;
 53         case 2:
 54             self.number = self.years.count;
 55             break;
 56         case 3:
 57             self.number = self.months.count;
 58             break;
 59         case 4:
 60             self.number = self.days.count;
 61             break;
 62     }
 63     
 64     return self.number;
 65     
 66 }
 67 
 68 //设置每行每列显示的内容
 69 -(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
 70 {
 71     
 72     switch (component)
 73     {
 74         case 0:
 75             self.str = self.weeks[row];
 76             break;
 77         case 1:
 78             self.str = self.time[row];
 79             break;
 80         case 2:
 81             self.str = self.years[row];
 82             break;
 83         case 3:
 84             self.str = self.months[row];
 85             break;
 86         case 4:
 87             self.str = self.days[row];
 88             break;
 89     }
 90 
 91     return self.str;
 92     
 93 }
 94 
 95 //通过代理方法didSelectRows获取数据
 96 - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
 97 {
 98     //NSLog(@"列：%ld，行：%ld",component,row);   
 99     switch (component)
100     {
101         case 0:
102             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[row],self.time[[pickerView selectedRowInComponent:1]],self.years[[pickerView selectedRowInComponent:2]],self.months[[pickerView selectedRowInComponent:3]],self.days[[pickerView selectedRowInComponent:4]]]);
103             break;
104         case 1:
105             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:0]],self.time[row],self.years[[pickerView selectedRowInComponent:2]],self.months[[pickerView selectedRowInComponent:3]],self.days[[pickerView selectedRowInComponent:4]]]);
106             break;
107         case 2:
108             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:0]],self.time[[pickerView selectedRowInComponent:1]],self.years[row],self.months[[pickerView selectedRowInComponent:3]],self.days[[pickerView selectedRowInComponent:4]]]);
109             break;
110         case 3:
111             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:0]],self.time[[pickerView selectedRowInComponent:1]],self.years[[pickerView selectedRowInComponent:2]],self.months[row],self.days[[pickerView selectedRowInComponent:4]]]);
112             break;
113         case 4:
114             NSLog(@"%@",[NSString stringWithFormat:@"%@,%@,%@,%@,%@",self.weeks[[pickerView selectedRowInComponent:0]],self.time[[pickerView selectedRowInComponent:1]],self.years[[pickerView selectedRowInComponent:2]],self.months[[pickerView selectedRowInComponent:3]],self.days[row]]);
115             break;
116     }
117 }
118 @end