iOS:UIPickerView选择器的使用

#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:@"2000",@"2001",@"2002",@"2003",@"2004",@"2005",@"2006",@"2007",@"2008",@"2009",@"2010",@"2011",@"2012",@"2013",@"2014",nil];

self.months = [NSArray arrayWithObjects:@"1",@"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"10", @"11", @"12", nil];

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];

//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 5;
}

//设置每列多少行
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
switch (component)
{
case 0:
self.number = self.weeks.count;
break;
case 1:
self.number = self.time.count;
break;
case 2:
self.number = self.years.count;
break;
case 3:
self.number = self.months.count;
break;
case 4:
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 0:
self.str = self.weeks[row];
break;
case 1:
self.str = self.time[row];
break;
case 2:
self.str = self.years[row];
break;
case 3:
self.str = self.months[row];
break;
case 4:
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 0:
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]]]);
break;
case 1:
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]]]);
break;
case 2:
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]]]);
break;
case 3:
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]]]);
break;
case 4:
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]]);
break;
}
}
@end