ios开发 -新浪微博(4)封装item 添加分类

为了更好的仿照苹果的原生代码风格 之前封装item是写了一个工具类 现在改为一个分类 这样用起来更方便
#import <UIKit/UIKit.h>

@interface UIBarButtonItem (Extension)
+(UIBarButtonItem *)itemWithTarget:(id)target Action:(SEL)action image:(NSString *)image highImage:(NSString *)highImage;
@end

#import "UIBarButtonItem+Extension.h"

@implementation UIBarButtonItem (Extension)

/*
 target 点击item 调用哪个对象的方法
 创建一个item
 action 点击item 后调用的target的哪个方法
 image 图片
 highImage 高亮图片
 
 return 创建完item
 
 */

+(UIBarButtonItem *)itemWithTarget:(id)target Action:(SEL)action image:(NSString *)image highImage:(NSString *)highImage
{
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];
    [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
    [btn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted];
    btn.size = btn.currentBackgroundImage.size;
    return [[UIBarButtonItem alloc]initWithCustomView:btn];
}
@end

#import "QHHomeViewController.h"



@interface QHHomeViewController ()

@end

@implementation QHHomeViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    /*设置导航栏上面的内容*/
    

    //注意这一调用的是控制器的方法 Tool 里面没有方法 知识调用action 的方法
    self.navigationItem.leftBarButtonItem =[UIBarButtonItem itemWithTarget:self Action:@selector(friendSearch) image:@"navigationbar_friendsearch" highImage:@"navigationbar_friendsearch_highlighted"];
    self.navigationItem.rightBarButtonItem = [UIBarButtonItem itemWithTarget:self Action:@selector(pop) image:@"navigationbar_pop" highImage:@"navigationbar_pop_highlighted"];

}

//
//-(UIBarButtonItem *)itemWithAction:(SEL)action image:(NSString *)image highImage:(NSString *)highImage
//{
//    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
//    [btn addTarget:self action:action forControlEvents:UIControlEventTouchUpInside];
//    [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
//    [btn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted];
//    btn.size = btn.currentBackgroundImage.size;
//    return [[UIBarButtonItem alloc]initWithCustomView:btn];
//}

-(void)friendSearch
{
    NSLog(@"friendsearch");
}

-(void)pop
{
    NSLog(@"pop");
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
#warning Potentially incomplete method implementation.
    // Return the number of sections.
    return 0;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
#warning Incomplete method implementation.
    // Return the number of rows in the section.
    return 0;
}

/*
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:<#@"reuseIdentifier"#> forIndexPath:indexPath];
    
    // Configure the cell...
    
    return cell;
}
*/

/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}
*/

/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}
*/

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end