处理 UITableviewcell 中的按钮事件

Posted 2023-03-04

【中文标题】处理 UITableviewcell 中的按钮事件

【英文标题】：Handle button event in UITableviewcell

【发布时间】：2012-02-17 12:04:52

【问题描述】：

我正在尝试从数组中获取一个数字并将其存储在 UITableview 单元格中的按钮中。当我点击按钮时，我应该能够得到号码。在按钮单击事件中从发件人那里获取信息的正确方法是什么

这是我尝试过的。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

 UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil )

    UIButton *button = [[[UIButton alloc]init]autorelease];
    CGRect frame = CGRectMake(180, 10, 33, 33);
    button.frame = frame;
    button.tag = 1001;

    UIImage *image = [[[UIImage alloc]init]autorelease];
    image = [UIImage imageNamed:@"icon.png"];
    [button setBackgroundImage:image forState:UIControlStateNormal];

    [button addTarget:self action:@selector(onIconTapped)  forControlEvents:UIControlEventTouchUpInside];
    button.backgroundColor = [UIColor clearColor];
    [button setHidden:YES];
    cell.accessoryView = button;  



int myContactID = contact.contactID;
NSLog(@"My No.  %d", myContactID);
NSNumber *mySelectedNumber = [NSNumber numberWithInt:myContactID];

UIButton *myButton = (UIButton *)[cell.accessoryView viewWithTag:1001];
for(int i = 0; i< [myContactsArray count]; i++)
    if([[[myContactsArray objectAtIndex:i]valueForKey:@"RecordID"] isEqualToNumber:mySelectedNumber])

        [myButton setHidden:NO];
        NSString *myString;
        myString = [[myContactsArray objectAtIndex:i]valueForKey:@"MYNumber"];
        [myButton setTitle:myString forState:UIControlStateNormal];
        myButton.titleLabel.font = [UIFont systemFontOfSize:0];
        NSLog(@"my number %@", myString);
        NSLog(@"Button tag %@", myButton.currentTitle);
        break;
    
    else
       [myButton setHidden:YES];
    





-(void)onIconTapped:(id)sender

【参考方案1】：

-(void)onIconTapped:(id)sender

  if (sender.tag == 1001)
  NSString *title = sender.currentTitle;

  NSNumberFormatter *formatter = [[[NSNumberFormatter alloc] init] autorelease];
  [formatter setNumberStyle:NSNumberFormatterDecimalStyle];

  NSNumber *titleNumber = [numberFormatter numberFromString:title]; 
  

【讨论】：

编辑：-(void)onIconTapped:(id)sender UIButton *button = (UIButton *)sender; if (button.tag == 1001)// 做事

【参考方案2】：

此方法来自 ios 食谱 (Matt Drance)：您可以通过将按钮的原点转换为 tableView (convertPoint:toView:) 来获取单元格，然后调用

[[self tableView] indexPathForRowAtPoint: convertedPoint];

【参考方案3】：

1.

[button addTarget:self action:@selector(onIconTapped:) `enter code here`forControlEvents:UIControlEventTouchUpInside];

2.

myString = [[myContactsArray objectAtIndex:i]valueForKey:@"MYNumber"];
button.tag = i;`

3.

-(void)onIconTapped:(id)sender
Contact *contact = [myContactsArray objectAtIndex:sender.tag];