如何刷新viewForFooterInSection

- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section { 

    if(footerView == nil) { 
     //allocate the view if it doesn't exist yet 
     footerView = [[UIView alloc] init]; 


     UIImage *image = [[UIImage imageNamed:@"update.png"] 
          stretchableImageWithLeftCapWidth:8 topCapHeight:8]; 

     //create the button 
     UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
     [button setBackgroundImage:image forState:UIControlStateNormal]; 

     //the button should be as big as a table view cell 
     [button setFrame:CGRectMake(100, 3, 300, 50)]; 

     NSDate *today = [NSDate date]; 
     NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; 
     // display in 12HR/24HR (i.e. 11:25PM or 23:25) format according to User Settings 
     [dateFormatter setTimeStyle:NSDateFormatterShortStyle]; 
     NSString *currentTime = [dateFormatter stringFromDate:today]; 


     [dateFormatter release]; 
     NSLog(@"User's current time in their preference format:%@",currentTime); 

     NSString *btnString; 


     NSDate* now = [NSDate date]; 
       btnString = [NSString stringWithFormat:@"%@:%@",@"Update",currentTime];  


     //set title, font size and font color 
     [button setTitle:btnString forState:UIControlStateNormal]; 
     [button.titleLabel setFont:[UIFont boldSystemFontOfSize:20]]; 
     [button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; 

     //set action of the button 
     [button addTarget:self action:@selector(update:) 
     forControlEvents:UIControlEventTouchUpInside]; 

     [footerView addSubview:button]; 

    } 
    return footerView; 
}

在这里，我想在视图按钮包含文本页脚部分添加按钮“更新：currentTime的” - >如“更新：下午4:30”
所以当他没有用户会明白最后更新，但现在当我按下这个按钮更新在视图中完成，但我想更新（刷新）按钮的文本，例如，如果我按下按钮15分钟后，它应该显示“更新：4：45 PM”...如何刷新本文如何刷新viewForFooterInSection

非常感谢你

来源

2011-04-21 Pooja

您的“更新”方法将接收按钮作为发件人。发件人应作为ID的对象，那么你可以将它转换为一个UIButton *，当你想这样的更新它的文本：

void update:(id)sender {  
[(UIButton)*sender setTitle:@"NEW TEXT" forState:UIControlStateNormal]; 
//rest of your update code 
}

来源

2011-04-21 16:08:08 mbritto

非常感谢你......我学到了很多东西从这个论坛和类似ü帮助人们再次感谢 – Pooja 2011-04-21 16:15:21

不客气，我从stackoverflow也学到了很多东西，只是尽可能地回馈。妥善保管好代码:) – mbritto 2011-04-26 12:53:58

如何刷新viewForFooterInSection

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