iOS开发中DatePicker和UIToolBar控件的使用简介

#import "YYViewController.h"

@interface YYViewController ()
/**
 *  文本输入框
 */
@property (strong, nonatomic) IBOutlet UITextField *textfield;

@end

- (void)viewDidLoad
{
    [super viewDidLoad];
    //1
    //添加一个时间选择器
    UIDatePicker *date=[[UIDatePicker alloc]init];
    /**
     *  设置只显示中文
     */
    [date setLocale:[NSLocale localeWithLocaleIdentifier:@"zh-CN"]];
    /**
     *  设置只显示日期
     */
    date.datePickerMode=UIDatePickerModeDate;
//    [self.view addSubview:date];
   
    //当光标移动到文本框的时候，召唤时间选择器
    self.textfield.inputView=date;
   
    //2
    //创建工具条
    UIToolbar *toolbar=[[UIToolbar alloc]init];
    //设置工具条的颜色
    toolbar.barTintColor=[UIColor brownColor];
    //设置工具条的frame
    toolbar.frame=CGRectMake(0, 0, 320, 44);
   
    //给工具条添加按钮
        UIBarButtonItem *item0=[[UIBarButtonItem alloc]initWithTitle:@"上一个" style:UIBarButtonItemStylePlain target:self action:@selector(click) ];
   
        UIBarButtonItem *item1=[[UIBarButtonItem alloc]initWithTitle:@"下一个" style:UIBarButtonItemStylePlain target:self action:@selector(click)];
   
        UIBarButtonItem *item2=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
        UIBarButtonItem *item3=[[UIBarButtonItem alloc]initWithTitle:@"完成" style:UIBarButtonItemStylePlain target:self action:@selector(click)];
   
     toolbar.items = @[item0, item1, item2, item3];
    //设置文本输入框键盘的辅助视图
    self.textfield.inputAccessoryView=toolbar;
}
-(void)click
{
    NSLog(@"toolbar");
}
@end

-initWithImage

-initWithBarButtonSystemItem（添加系统自定义的button，形状跟大小都已经固定了）下面链接里面有按钮图片样式

https://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIBarButtonItem_Class/Reference/Reference.html

-initWithCustomView（添加除了button以外的View）

UIToolbar *myToolBar = [[UIToolbar alloc] initWithFrame: 

                                                    CGRectMake(0.0f, 0.0f, 320.0f, 44.0f)]; 

NSMutableArray *myToolBarItems = [NSMutableArray array]; 

[myToolBarItems addObject:[[[UIBarButtonItem alloc] 

                                                        initWithTitle:@"myTile"  

                                                        style:UIBarButtonItemStylePlain  

                                                        target:self  

                                                        action:@selector(action)] autorelease]]; 

[myToolBar setItems:myToolBarItems animated:YES]; 

[myToolBar release]; 

[myToolBarItems];                                                        

[myToolBarItems addObject:[[[UIBarButtonItem alloc] 

                                        initWithImage:[UIImage imageNamed:@"myImage.png"]  

                                        style:UIBarButtonItemStylePlain  

                                        target:self  

                                        action:@selector(action)]];  

4.在UIToolBar上面添加SystemItem

[myToolBarItems addObject:[[[UIBarButtonItem alloc] 

                                        initWithBarButtonSystemItem:UIBarButtonSystemItemPlay  

                                        target:self  

                                        action:@selector(action)] autorelease]];  

Defines system defaults for commonly used items.

typedef enum { 

    UIBarButtonSystemItemDone, 

    UIBarButtonSystemItemCancel, 

    UIBarButtonSystemItemEdit, 

    UIBarButtonSystemItemSave, 

    UIBarButtonSystemItemAdd, 

    UIBarButtonSystemItemFlexibleSpace, 

    UIBarButtonSystemItemFixedSpace, 

    UIBarButtonSystemItemCompose, 

    UIBarButtonSystemItemReply, 

    UIBarButtonSystemItemAction, 

    UIBarButtonSystemItemOrganize, 

    UIBarButtonSystemItemBookmarks, 

    UIBarButtonSystemItemSearch, 

    UIBarButtonSystemItemRefresh, 

    UIBarButtonSystemItemStop, 

    UIBarButtonSystemItemCamera, 

    UIBarButtonSystemItemTrash, 

    UIBarButtonSystemItemPlay, 

    UIBarButtonSystemItemPause, 

    UIBarButtonSystemItemRewind, 

    UIBarButtonSystemItemFastForward, 

    UIBarButtonSystemItemUndo,        // iPhoneOS 3.0 

    UIBarButtonSystemItemRedo,        // iPhoneOS 3.0 

} UIBarButtonSystemItem; 

                                initWithCustomView:[[[UISwitch alloc] init] autorelease]] 

                                    autorelease]]; 

                                 initWithTitle:@"myButton" 

                                 style:UIBarButtonItemStyleBordered 

                                 target:self  

                                 action:@selector(action)]autorelease]; 

get1Button.width = 50; 

[myToolBarItems addObject:myButton];     

UILabel *myLabel = [[UILabel alloc] initWithFrame:CGRectMake(40.0f, 20.0f, 45.0f, 10.0f)]; 

myLabel.fOnt=[UIFont systemFontOfSize:10]; 

//myLabel.backgroundColor = [UIColor clearColor]; 

//myLabel.textAlignment=UITextAlignmentCenter; 

UIBarButtonItem *myButtOnItem= [[UIBarButtonItem alloc]initWithCustomView:myLabel]; 

[myToolBarItems addObject: myButtonItem];    

[mylabel release]; 

[myButtonItem release]; 

UIBarButtonItem *myButtOnItem= [[UIBarButtonItem alloc]initWithCustomView:myProgress]; 

[myToolBarItems addObject: myButtonItem]; 

[myProgress release];                                            

[myButtonItem release];