从已知按钮标签更改自定义单元格中的特定按钮标题

Question

我有一个带有 CustomCell 的 UITableView，每个单元格都有一个 UIButton，并且按钮在 cellForRowAtIndexPath 中获取标签

cell.ffButton.tag = indexPath.row;
[cell.ffButton addTarget:self action:@selector(changeTitle:) forControlEvents:UIControlEventTouchUpInside];

如果用户按下UIButton，我希望它只更改按钮标题。

changeTitle 操作在我的 UITableView.m 中，而不是在 CustomCell.m 文件中

用谷歌搜索我需要的东西，但找不到任何东西。

有什么想法吗？ :)

更新：

我的表格视图

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

    static NSString *CellIdentifier = @"NotMutualCustomCell";

    notMutualCustom *cell = (notMutualCustom *) [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    cell.ffButton.hidden = NO;
    cell.ffButton.tag = indexPath.row;

    [cell.ffButton setTitle:@"Title" forState:UIControlStateNormal];
    [cell.ffButton addTarget:self action:@selector(changeTitle:) forControlEvents:UIControlEventTouchUpInside];

    return cell;
}

Answer 1

您可以为按钮的不同状态指定不同的标题：

   [button setTitle:@"ON" forState:UIControlStateNormal];
   [button setTitle:@"OFF" forState:UIControlStateSelected];

接下来，您可以在UIControlEventTouchUpInsideevent 的操作处理程序中更改按钮的状态：

 - (void)changeTitle:(UIButton *)button
 {
   button.state = button.state == UIControlStateNormal ? UIControlStateSelected : UIControlStateNormal;
   //keep new state of the button in model 
   self.dictionary[[@(button.tag) stringValue]] = @(state);
 }

您必须将按钮的状态存储在应用程序的模型中。您可以为此目的使用字典（请记住正确初始化字典的值 - 到正确的状态）。

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
 {
    //create cell 
    cell.button.state = [self.dictionary[[@(button.tag) stringValue]] integerValue];
    return cell;
 }

Answer 2

自定义表格视图单元格

[btnAddFriend setTitle:@"Follow" forState:UIControlStateNormal];
[btnAddFriend setTitle:@"Unfollow" forState:UIControlStateSelected];

表格视图实现

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

CustomTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CustomTableViewCell"];
if (!cell) {
    NSArray *nibs = [[NSBundle mainBundle] loadNibNamed:@"CustomTableViewCell" owner:self options:nil];
    cell = [nibs firstObject];
    [cell.btnAddFriend addTarget:self action:@selector(followButtonTapped:forEvent:) forControlEvents:UIControlEventTouchUpInside];
}

return cell;
}

-(void)followButtonTapped:(id)sender forEvent:(UIEvent*)event{

//
UIButton *followButton = (UIButton*)sender;
followButton.selected = !followButton.selected;

//
NSSet *touches = [event allTouches];
UITouch *touch = [touches anyObject];
CGPoint currentTouchPosition = [touch locationInView:self.tableView];

// Lookup the index path of the cell whose checkbox was modified.
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:currentTouchPosition];

NSLog(@"index:%@",indexPath); // you can get the index of array from here 

}

Reference TableViewCell Accessory